Timely filing denial, provider at fault

**My Thought Process on Crafting That Member Message**

Alright, so the core task here is to construct a clear, concise, and member-friendly explanation for a claim denial. Given my expertise, I know the devil is in the details, especially with regulatory compliance and member experience. My immediate focus is on dissecting the request's constraints and required information.

First, I've identified the key factual elements that *must* be included: the claim ID (2026-0655012), the service date (2025-03-14), the submission date (2026-07-30), and the explicit reason for denial – a missed "timely filing limit" per the provider contract. Equally crucial are the implications for the member: zero liability ($0.00) and the provider's contractual prohibition from billing them directly for this specific denial reason. Finally, I need to outline the necessary follow-up actions: the provider is informed, and the member should contact us if they *do* receive a bill, which is a critical safeguard.

Now, the tricky part: the constraints. The message must be five sentences or fewer. No headers, salutations, or sign-offs – this means the message has to stand on its own, direct and to the point. The reading level needs to be accessible, around an eighth-grade level, which means I need to simplify jargon like "timely filing limit" or explain its essence clearly without being patronizing. Exact dates and numbers are non-negotiable. And, of course, the output must be in a precise JSON format with a single `"message"` key.

My initial drafting process involved stringing these facts together logically. My first attempt might have been something like: "Claim 2026-0655012 for service on 2025-03-14 was denied because the provider submitted it on 2026-07-30, which is outside the 365-day timely filing limit in their contract. This means you owe $0.00 for this service, and the provider cannot bill you. We have informed the provider. If you get a bill, contact us."

I immediately count those sentences – that’s five. Good. Now, I review it against the other constraints. Does it define "timely filing limit"? Not explicitly, but it explains the consequence of missing it, which is often more effective for this audience. Is it eighth-grade level? I think so. The dates and numbers are correct. No extra preamble or closing.

However, I want to make it even smoother and more reassuring. The phrase "outside the 365-day timely filing limit" could be simplified. I also want to explicitly state the *prohibition* on billing more directly.

So, I refine it. I want to be very clear about the *what* and the *why*, then the *implication* for the member, and finally the *action*.

My refined version goes something like this:

"We denied claim 2026-0655012 for your service on 2025-03-14 because your provider sent it to us on 2026-07-30." (This directly states the core issue and dates.)

"Your provider's contract requires them to submit claims within 365 days, which is known as a timely filing limit." (This explains the rule and defines the term concisely.)

"Because they missed this deadline, you owe nothing for this claim and they are not allowed to bill you for it." (This clearly states the member's zero liability and the provider's restriction.)

"We have already notified your provider about this decision." (This confirms one action has been taken.)

"Please contact us if you receive a bill for this service." (This provides the crucial member action and safeguard.)

I re-count: five sentences. Perfect. It hits all the required points: claim ID, service date, submission date, reason (timely filing limit explained), member liability ($0.00), provider billing restriction, and provider notification. It avoids technical jargon where possible and keeps the language direct. The dates are exact. No extraneous elements.

Finally, I wrap it in the required JSON structure. This rigorous, iterative process ensures all requirements are met, resulting in a message that is both compliant and, crucially, understandable and reassuring to the member.

**My Thought Process on Crafting the Member Message**

Here’s a breakdown of how I approached generating that member message, essentially documenting my internal deliberation process to meet all the specified requirements.

1.  **Deconstructing the Request:** My first step was to thoroughly understand each constraint and requirement. I identified the core task: creating a member-facing explanation within the context of benefit claims. The key constraints were:
    *   **Length:** Strictly five sentences or fewer. This immediately signals a need for conciseness and efficient information delivery.
    *   **Format:** Exactly one fenced JSON code block with a single key, "message". This is a rigid output structure I must adhere to.
    *   **Readability:** An 8th-grade reading level is required, meaning I need to avoid jargon and define any necessary technical terms simply.
    *   **Data Specificity:** Use exact dates (2026-07-30 and 2025-03-14) and dollar amounts (though none were provided for this specific scenario).
    *   **Content Mandates:** I meticulously listed the facts that *must* be included:
        *   Claim denial: 2026-0655012.
        *   Reason: Provider submitted on 2026-07-30 for service on 2025-03-14.
        *   Violation: Exceeded the 365-day timely filing limit in the provider contract.
        *   Member responsibility: Zero.
        *   Provider obligation: Contract prevents billing the member for untimely filings.
        *   Communication: Provider has been notified.
        *   Member action: Contact the plan if they receive a bill.

2.  **Initial Drafting - Getting the Facts Down:** My first pass was to get all the mandated facts into sentences, without too much regard for flow or sentence count yet. I aimed for clarity and accuracy.
    *   "Claim 2026-0655012 was denied. It was for a service on 2025-03-14. The provider submitted it on 2026-07-30. This is over the 365-day limit for submitting claims, which is called timely filing. You owe nothing. The provider contract says they can't bill you for this. We told the provider. If you get a bill, call us."

3.  **Refining for Conciseness and Flow (Sentence Count Management):** This draft is too choppy and likely exceeds the sentence limit. I started combining related ideas and smoothing the language, keeping the five-sentence constraint front and center.
    *   *Sentence 1 (Denial & Reason):* I merged the claim number, service date, submission date, and the core reason (late submission). I also decided to introduce the term "timely filing limit" here and explain it. "We denied claim 2026-0655012 for your service on 2025-03-14 because your provider submitted it on 2026-07-30, which is past their 365-day deadline called a timely filing limit." (This covers the first three facts efficiently).
    *   *Sentence 2 (Member Liability):* This is a critical piece of information for the member and deserves its own clear statement. "You do not owe anything for this service." (Covers fact 4).
    *   *Sentence 3 (Provider Contract):* This explains *why* the member owes nothing, linking it to the contract. "Our contract with your provider states they cannot bill you when a claim is denied for being submitted late." (Covers fact 5).
    *   *Sentence 4 (Provider Notification):* A brief confirmation that the provider is aware. "We have notified your provider about this decision." (Covers fact 6).
    *   *Sentence 5 (Call to Action):* A clear instruction for the member if the situation isn't fully resolved on their end. "If you receive a bill for this claim, please contact us." (Covers fact 7).

4.  **Reviewing Against All Constraints (Final Check):**
    *   **Five Sentences:** Exactly five. Check.
    *   **8th-Grade Level:** I reread it, looking for complex words or sentence structures. "Timely filing limit" is explained as a "deadline." The language is direct and simple. Check.
    *   **Exact Dates:** 2025-03-14 and 2026-07-30 are present and correct. Check.
    *   **All Facts Included:** I cross-referenced my list of required facts with the drafted sentences. All are covered. Check.
    *   **No Clinical Advice/Promises:** Confirmed. Check.
    *   **JSON Format:** The final step is to wrap this exact text within the specified JSON structure.

5.  **Constructing the JSON Output:** This is a straightforward formatting step once the message content is finalized. I create the single JSON object with the "message" key and paste the finalized text as its value.

This iterative process, moving from understanding to drafting, refining, and finally validating against all constraints, is how I ensure accuracy and adherence to complex requirements for outputs like this. The goal is always to produce a clear, correct, and compliant message in the requested format.

**My Thought Process Regarding Claim 2026-0655012**

Here's a breakdown of how I arrived at the summary for the member:

1.  **Understand the Core Problem:** The central issue is a claim that was denied because the provider submitted it too late. This means the provider missed a deadline.

2.  **Identify Key Information for the Member:**
    *   The claim number (2026-0655012).
    *   Why it was denied (late submission).
    *   The dates involved (submission date 2026-07-30, service date 2025-03-14).
    *   The specific rule violated (365-day timely filing limit).
    *   The financial impact on the member (none).
    *   The provider's obligation (cannot bill the member).
    *   What the member should do if something goes wrong (contact the plan).

3.  **Target Audience and Style:** The summary needs to be written for a member at an 8th-grade reading level. This means avoiding jargon, explaining technical terms simply, and using clear, direct language. I also need to define any "term of art."

4.  **Constraints Checklist:** I'll go through the specific constraints provided:
    *   **Exactly one fenced JSON block:** I'll ensure the final output is a single JSON object.
    *   **No preamble/commentary:** The output will start directly with the JSON.
    *   **Max 5 sentences:** I need to be concise and impactful.
    *   **Define terms of art:** "Timely filing limit" is a clear term of art here.
    *   **8th-grade reading level:** Keep language simple.
    *   **Exact dollar figures and dates:** Use "0.00" and the specified ISO 8601 dates.
    *   **ISO 8601 for dates:** YYYY-MM-DD format.
    *   **Required keys:** Only "message" is required.
    *   **No headers/bullets/salutations:** The message itself will be plain text within the JSON.

5.  **Drafting - Iteration 1 (Mental Outline):**
    *   Claim denied because submitted late.
    *   Late = after 365 days. This is the rule.
    *   You owe nothing.
    *   Provider can't charge you because of the rule.
    *   If you get a bill, call us.

6.  **Drafting - Iteration 2 (Adding Detail and Structure):**
    *   "We denied claim 2026-0655012 because your provider sent it on 2026-07-30 for a visit on 2025-03-14." (Sentence 1: The basic fact).
    *   "This was past the 365-day timely filing limit, which is the deadline for sending us claims." (Sentence 2: Explains the rule and defines "timely filing limit").
    *   "You owe 0.00 for this service." (Sentence 3: Member's financial responsibility, using the required format for "none").
    *   "We notified your provider that they cannot bill you for this late claim under their agreement with us." (Sentence 4: Explains why the provider can't bill, drawing from the contract and notification facts).
    *   "If you receive a bill for this claim, please contact the plan." (Sentence 5: Action item for the member, aligning with prompt's instruction).

7.  **Review Against Constraints:**
    *   **JSON Block:** Yes, it will be.
    *   **Preamble:** No.
    *   **5 Sentences:** Yes, exactly 5.
    *   **Terms Defined:** "timely filing limit" is defined in Sentence 2.
    *   **8th Grade:** Language seems appropriate ("sent," "deadline," "owe," "told," "agreement").
    *   **Dollar/Dates:** "0.00" is used. Dates "2026-07-30" and "2025-03-14" are ISO 8601.
    *   **Keys:** Only "message".
    *   **No Headers/Bullets/Salutations:** Yes.
    *   **"Late claim" consistency:** Used in Sentence 4, consistent with the denial reason.
    *   **"agreement with us":** This covers the "provider's participation agreement" in simpler terms.
    *   **"notified your provider":** This reflects the fact provided.
    *   **"cannot bill you for this late claim":** This aligns with the prompt's statement that "a claim denied for untimely filing may not be billed to the member."
    *   **"If you receive a bill for this claim":** Matches the prompt's wording for the member's action.

8.  **Final Polish:** The sentences flow logically. The language is direct. The constraints are met. The message is clear and actionable for the member. I confirmed that "0.00" meets the formatting requirement for dollar amounts. The phrase "timely filing limit" is defined immediately after its first use in Sentence 2. The dates are in the correct ISO 8601 format. The claim number is included. The final sentence aligns with the prompt's instruction about contacting the plan.

This systematic approach, checking each constraint and iterating on the wording, ensures the final output is accurate, compliant, and effective for the intended audience.

```json
{
  "message": "We denied claim 2026-0655012 because your provider submitted it on 2026-07-30 for a visit on 2025-03-14. This was after the 365-day timely filing limit, which is the deadline for sending us claims. You owe 0.00 for this service. We notified your provider that they cannot bill you for this late claim under their agreement with us. If you receive a bill for this claim, please contact the plan."
}
```

**My Thought Process: Crafting the Member Message**

Alright, I need to write a clear and concise message to a member about a denied claim. The goal is to explain *why* it was denied, what it means for them financially, and what they should do if they get a bill, all while keeping it simple enough for an 8th-grade reading level and within a strict 5-sentence limit.

First, I need to identify the core pieces of information about this specific claim:
*   **Claim ID:** 2026-0655012. This is crucial for the member to reference.
*   **Date of Service:** 2025-03-14. Important context for the member.
*   **Claim Submission Date:** 2026-07-30. This is the key piece of evidence for the denial reason.
*   **Denial Reason:** Timely filing limit exceeded (365 days). This is the *why*, and it's a technical term I'll need to explain.
*   **Member Liability:** $0.00 (none). This is critical for the member – they don't owe anything.
*   **Additional Context:** Provider cannot bill the member; contact the plan if they do. This is the essential instruction for the member.

My task is to synthesize all this into a 5-sentence JSON object with a "message" key.

Here's my breakdown of the steps I need to take for the message content:

1.  **Identify the claim and the decision:** Start by clearly stating which claim is being discussed and that it was denied. I need to include the Claim ID and Date of Service here.
2.  **Explain the denial reason:** The reason is "timely filing limit exceeded (365 days)." This is a term of art. I need to define "timely filing limit" simply and connect it to the 365-day rule and the submission date. The explanation should show *why* it was late.
3.  **State the member's financial responsibility:** The prompt explicitly says "Member Liability: $0.00 (none)." This is excellent news for the member, and I need to state it unequivocally. They owe nothing.
4.  **Address the provider's billing:** The prompt notes the provider cannot bill the member. This is a direct consequence of the denial and needs to be clearly communicated to reassure the member.
5.  **Provide an instruction for potential issues:** The prompt says, "If billed, contact the plan." This is the action the member needs to take if they disregard the previous points and somehow receive a bill.

Let's start drafting, keeping the 5-sentence limit and 8th-grade reading level in mind.

*   **Sentence 1 (Claim Identification & Denial):** I'll start by combining the claim details and the denial. "We denied claim 2026-0655012 for your 2025-03-14 visit because your provider submitted it on 2026-07-30, which is past the 365-day deadline." This sets the stage immediately.

*   **Sentence 2 (Explaining "Timely Filing"):** Now, I need to define the term. "This deadline is known as a timely filing limit, which is the time a provider has to send us a claim." This clearly explains what the term means and links it back to the deadline mentioned in sentence 1.

*   **Sentence 3 (Member Liability):** This is crucial. "You have no member liability, or share of the cost, for this service." I'll explicitly state they have no liability and briefly define what "member liability" means in this context.

*   **Sentence 4 (Provider Billing & Notification):** I need to combine the "provider cannot bill" and "provider has been notified" points. "We have notified your provider that they may not bill you for a claim denied for being late." This covers both aspects: they've been told and they can't bill the member because it was late.

*   **Sentence 5 (Actionable Instruction):** The final instruction. "If you receive a bill for this visit, please contact the plan." This is a clear, direct instruction for the member if, despite all assurances, a bill appears.

Let's review the draft:
"We denied claim 2026-0655012 for your 2025-03-14 visit because your provider submitted it on 2026-07-30, which is past the 365-day deadline. This deadline is known as a timely filing limit, which is the time a provider has to send us a claim. You have no member liability, or share of the cost, for this service. We have notified your provider that they may not bill you for a claim denied for being late. If you receive a bill for this visit, please contact the plan."

*   **Sentence Count:** 5 sentences. Perfect.
*   **Reading Level:** Seems appropriate for around 8th grade. Terms like "denied," "submitted," "deadline," "limit," "liability," and "notified" are used but explained or clear from context.
*   **Information Included:** Claim ID, Date of Service, Submission Date, Denial Reason (explained), Member Liability (none, explained), Provider Billing Prohibition (explained), Notification of Provider, and Member Instruction. All key points are covered.
*   **Terms of Art:** "Timely filing limit" is defined. "Member liability" is defined as "share of the cost."
*   **Format:** I need to put this into a JSON object with the key "message".

This process leads directly to the final JSON output. I've considered the constraints, the audience, and the specific information required to build a clear, compliant, and helpful message.

Okay, I've been asked to craft a member-facing message explaining a claim denial, and I need to do it concisely, in five sentences or fewer, from my own perspective as if I were thinking through the process.

First, I need to identify the claim and state that it's been processed, but ultimately denied. I'll use the service date to make it clear which service I'm referring to. Something like, "I reviewed a claim from your provider for your service on March 14, 2025."

Next, I have to explain *why* it was denied. The core issue is timeliness, so I need to clearly articulate that the provider submitted it too late. I'll include the specific dates to underscore this. I'm thinking, "This claim was denied because your provider submitted it on July 30, 2026, which falls outside the 365-day filing deadline stipulated in their contract with us." This covers the late submission and references the contractual obligation.

Then, I need to directly address the financial impact on the member. The key here is that they owe $0.00 for this specific denial reason, and I need to make sure they understand that. I'll phrase it as, "Because the claim was filed late, you are not responsible for any charges associated with this service."

The prompt also explicitly states that the provider cannot bill the member for this type of denial. I should weave that in to provide further reassurance. I can combine this with the previous point to keep it concise, or make it a separate, reinforcing sentence. Let's try to integrate it into the "you owe nothing" statement: "Under the terms of their contract, your provider cannot bill you for a claim denied due to late submission, and therefore, you are not responsible for any payment for this service." That feels a bit redundant with the previous sentence.

Let's reconsider. I want to make sure the member understands *why* they don't owe anything, which is tied to the contract. So, perhaps, "Because the claim was submitted past the 365-day contractual deadline, it has been denied, and your provider is not permitted to bill you for this service." This is good, it directly links the denial, the reason, and the provider's inability to bill.

Finally, I need to provide clear instructions on what to do if, despite this explanation, the member *does* receive a bill. This is a crucial safeguard. I'll simply state, "If you do receive a bill for this service, please contact us immediately."

Let's assemble those thoughts into the final message:

"I reviewed a claim from your provider for your service on March 14, 2025. This claim was denied because your provider submitted it on July 30, 2026, which falls outside the 365-day filing deadline stipulated in their contract with us. Because the claim was submitted past this contractual deadline, your provider is not permitted to bill you for this service. Therefore, you are not responsible for any payment for this particular claim. If you do receive a bill for this service, please contact us."

Actually, that's five sentences, and it feels very direct and covers all the required points. I've explained the claim, the reason, the contractual implication, the member's financial responsibility (or lack thereof), and the next step if something goes wrong. This aligns with what I'd want to communicate as a clear, expert explanation.

The user wants a member-facing message explaining a claim denial.
Claim: 2026-0655012
Denial reason: Provider submitted claim on 2026-07-30 for date of service 2025-03-14, which is outside the 365-day timely filing limit.
Member liability: None. Provider cannot bill member for untimely filing.
Action: Provider notified. If member gets a bill, contact the plan.
Constraint: Five sentences or fewer.
Tone/Style: Eighth-grade reading level, no headers/bullets, no salutation/sign-off, exact dollar figures/dates (none given except dates), no clinical advice, no promising outcomes not in facts.

Drafting sentences:
1. We denied claim 2026-0655012 for your service on 2025-03-14 because your provider submitted it on 2026-07-30, which is past the 365-day time limit for filing claims.
2. You do not owe any money for this claim.
3. Your provider's contract does not allow them to bill you when a claim is denied for late filing.
4. We have already notified your provider about this decision.
5. If you receive a bill for this service, please contact us so we can help.

Count sentences: 5.
Let's refine to ensure it's very clear and meets all constraints.

Sentence 1: We denied claim 2026-0655012 for your service on 2025-03-14 because your provider sent it to us on 2026-07-30, which is past the 365-day time limit for filing claims.
Sentence 2: You do not owe any money for this claim.
Sentence 3: Your provider's agreement with us does not allow them to bill you when a claim is denied for late filing.
Sentence 4: We have notified your provider about this decision.
Sentence 5: If you receive a bill for this service, please contact us.

Check constraints:
- Five sentences or fewer? Yes, exactly 5.
- No headers, bullets, salutation, sign-off? Yes.
- Eighth-grade reading level? Yes.
- Exact dates used? 2025-03-14, 2026-07-30. Yes.
- Claim number used? 2026-0655012. Yes.
- No clinical advice? Yes.
- Includes appeal rights/deadlines/route to resolution? "If you receive a bill for this service, please contact us." (Route to resolution).

Let's do a quick read-through.
"We denied claim 2026-0655012 for your service on 2025-03-14 because your provider sent it to us on 2026-07-30, which is past the 365-day time limit for filing claims. You do not owe any money for this claim. Your provider's agreement with us does not allow them to bill you when a claim is denied for late filing. We have notified your provider about this decision. If you receive a bill for this service, please contact us."

Wait, could I combine some to make it flow better and be safely under 5 sentences?
"We denied claim 2026-0655012 for your service on 2025-03-14 because your provider submitted it on 2026-07-30, which is past the 365-day time limit for filing claims. You do not owe any money for this claim because your provider's agreement does not allow them to bill you for late filing. We have notified your provider about this decision. If you receive a bill for this service, please contact us."
That is 4 sentences.

Let's check the rules again.
"Write it as the member will read it: no headers, no bullet points unless the facts genuinely need a list, no salutation or sign-off unless the item asks for a letter."
"Use the exact dollar figures and dates supplied; do not round them and do not introduce a figure that is not in the facts."

Sentence 1: We denied claim 2026-0655012 for your service on 2025-03-14 because your provider submitted it on 2026-07-30, which is past the 365-day time limit for filing claims.
Sentence 2: You do not owe any money for this claim because your provider's agreement does not allow them to bill you when a claim is denied for late filing.
Sentence 3: We have notified your provider about this decision.
Sentence 4: If you receive a bill for this service, please contact us.

4 sentences. Perfectly clear. 8th grade level. No extra fluff.
JSON format required.
```json
{
  "message": "We denied claim 2026-0655012 for your service on 2025-03-14 because your provider submitted it on 2026-07-30, which is past the 365-day time limit for filing claims. You do not owe any money for this claim because your provider's agreement does not allow them to bill you when a claim is denied for late filing. We have notified your provider about this decision. If you receive a bill for this service, please contact us."
}
```
Double check dates:
DOS: 2025-03-14
Submission: 2026-07-30
Claim: 2026-0655012
Limit: 365-day

All correct.
No other keys required. Just "message".
Done.

The user wants a member-facing message explaining a claim denial due to timely filing limits.
Constraints:
- 5 sentences or fewer.
- Eighth-grade reading level.
- Define terms of art.
- Use exact dollar figures and dates (none provided except dates of service/submission).
- No clinical advice.
- No promising outcomes not supported by facts.
- Include appeal rights/deadlines/routes to resolution if provided (contact plan if billed).
- JSON format with "message" key.

Facts:
- Claim: 2026-0655012
- Denial reason: Provider submitted claim on 2026-07-30 for date of service 2025-03-14, outside 365-day timely filing limit.
- Member liability: none. Cannot be billed to member.
- Action: Provider notified. If member receives a bill, contact the plan.

Drafting the message:
We denied claim 2026-0655012 for your care on 2025-03-14 because your provider submitted it on 2026-07-30, which is past our 365-day timely filing limit. A timely filing limit is the deadline a provider has to send us a claim. Because of this rule, you do not owe any money for this claim, and your provider is not allowed to bill you for it. We have already notified your provider about this decision. If you receive a bill for this service, please contact us so we can help resolve it.

Sentence count check:
1. We denied claim 2026-0655012 for your care on 2025-03-14 because your provider submitted it on 2026-07-30, which is past our 365-day timely filing limit.
2. A timely filing limit is the deadline a provider has to send us a claim.
3. Because of this rule, you do not owe any money for this claim, and your provider is not allowed to bill you for it.
4. We have already notified your provider about this decision.
5. If you receive a bill for this service, please contact us so we can help resolve it.

Total: 5 sentences.

Reading level check:
Simple words, clear explanation of "timely filing limit".

Let's refine sentence 1 and 2 to be more concise and natural.
1. We denied claim 2026-0655012 for your care on 2025-03-14 because your provider sent it to us on 2026-07-30, missing the 365-day timely filing limit.
2. A timely filing limit is the maximum time a provider has to submit a claim to us.
3. You do not owe any money for this claim, and your provider cannot bill you for it.
4. We have notified your provider of this decision.
5. If you receive a bill for this service, please contact us right away.

Count: 5 sentences.

Let's check the constraints:
- "message" string
- 5 sentences or fewer.
- No headers, bullets, salutation, sign-off.
- Exact dates used: 2025-03-14, 2026-07-30.
- Defined "timely filing limit".

Text:
We denied claim 2026-0655012 for your care on 2025-03-14 because your provider sent it to us on 2026-07-30, missing the 365-day timely filing limit. A timely filing limit is the maximum time a provider has to submit a claim to us. You do not owe any money for this claim, and your provider cannot bill you for it. We have notified your provider of this decision. If you receive a bill for this service, please contact us right away.

Sentence 1: We denied claim 2026-0655012 for your care on 2025-03-14 because your provider sent it to us on 2026-07-30, missing the 365-day timely filing limit.
Sentence 2: A timely filing limit is the maximum time a provider has to submit a claim to us.
Sentence 3: You do not owe any money for this claim, and your provider cannot bill you for it.
Sentence 4: We have notified your provider of this decision.
Sentence 5: If you receive a bill for this service, please contact us right away.

Exactly 5 sentences.
No salutation or sign-off.
JSON format.
No other text.
All good.

The user wants a member-facing message explaining a claim denial due to timely filing limits.
Constraints:
- Five sentences or fewer.
- Explain the denial reason (provider submitted late, outside 365-day limit).
- Explain member liability (none, cannot be billed to member).
- Explain next steps (provider notified, contact plan if billed).
- Tone: 8th-grade reading level, no clinical advice, no salutations/sign-offs, use exact facts.
- JSON format with "message" key.

Drafting sentences:
1. We denied your claim for services on 2025-03-14 because your provider submitted it on 2026-07-30, which is past our 365-day time limit for filing claims.
2. You do not owe any money for this claim because your provider's contract does not allow them to bill you for late submissions.
3. We have already notified your provider about this decision.
4. If you receive a bill for these services, please contact us so we can help resolve it.

Count: 4 sentences.

Let's refine to ensure it's clear and meets all constraints.
Sentence 1: We denied the claim for your services on 2025-03-14 because your provider submitted it on 2026-07-30, which is outside the 365-day time limit for filing claims.
Sentence 2: You are not responsible for paying this bill because your provider's agreement prevents them from billing you for late claims.
Sentence 3: We have notified your provider of this denial.
Sentence 4: If you receive a bill for this claim, please contact us so we can assist you.

Check constraints:
- Five sentences or fewer? Yes (4 sentences).
- Exact dates used? 2025-03-14, 2026-07-30. Yes.
- 8th grade reading level? Yes.
- No salutation/sign-off? Yes.
- JSON format? Yes.

Let's review the exact prompt details:
"Denial reason: provider submitted the claim 2026-07-30 for a date of service 2025-03-14, outside the 365-day timely filing limit in the provider's contract."
"Member liability: none. Under the provider's participation agreement, a claim denied for untimely filing may not be billed to the member."
"The provider has been notified. If the member receives a bill for this claim they should contact the plan."

Draft:
We denied the claim for your services on 2025-03-14 because your provider submitted it on 2026-07-30, which is outside the 365-day time limit in their contract. You do not owe any money for this claim because your provider is not allowed to bill you for late submissions. We have already notified your provider about this decision. If you receive a bill for this claim, please contact us so we can help.

Sentences: 4.
Words: ~70.
Reading level: simple and clear.

Checking keys: "message"

```json
{
  "message": "We denied the claim for your services on 2025-03-14 because your provider submitted it on 2026-07-30, which is outside the 365-day time limit in their contract. You do not owe any money for this claim because your provider is not allowed to bill you for late submissions. We have already notified your provider about this decision. If you receive a bill for this claim, please contact us so we can help."
}
```
Looks good.

Let me analyze this task. I need to write a member-facing message, five sentences or fewer, explaining that a claim was denied for untimely filing, the member owes nothing, and if they get a bill they should contact the plan.

Key facts:
- Claim 2026-0655012
- Provider submitted claim on 2026-07-30 for date of service 2025-03-14
- Outside the 365-day timely filing limit in provider's contract
- Member liability: none — under provider's participation agreement, a claim denied for untimely filing may not be billed to the member
- Provider has been notified
- If member receives a bill, contact the plan

No appeal rights mentioned. No deadlines mentioned for the member. The route to resolution: contact the plan if billed.

Write at ~8th grade reading level. Define terms of art. "Timely filing" should be defined. Five sentences or fewer. Use exact dollar figures and dates — no dollar figures here, but dates: 2026-07-30, 2025-03-14. Actually, do I need to include the dates? "Use the exact dollar figures and dates supplied; do not round them and do not introduce a figure that is not in the facts." I can include dates if helpful. I should reference the claim number.

Draft:

"We reviewed claim 2026-0655012 for your service on 2025-03-14 and denied it because your provider sent the bill too late. Providers must submit claims within 365 days of the date of service, and this one was received on 2026-07-30, past that deadline. You do not owe anything for this claim, and your provider's contract with us does not allow them to bill you for a claim denied for being filed late. We have notified the provider of this decision. If you receive a bill for this claim, please contact us and we will help resolve it."

That's five sentences. Reading level is fine. "Timely filing" — I described it as the deadline to submit claims. Should I use the term "timely filing"? Maybe say "this is called a timely filing denial" — but keeping it simple is fine. Define the term of art: timely filing = providers must submit claims within 365 days. That works.

Check sentence count: 
1. "We reviewed claim 2026-0655012 for your service on 2025-03-14 and denied it because your provider sent the bill too late."
2. "Providers must submit claims within 365 days of the date of service, and this claim was received on 2026-07-30, past that deadline."
3. "You owe nothing for this claim, because your provider's contract with our plan does not allow them to bill you when a claim is denied for late filing."
4. "We have notified the provider of this decision."
5. "If you receive a bill for this claim, please contact our plan and we will help resolve it."

Good. Five sentences. No promise of outcomes beyond the facts. No appeal rights given in facts, so none included. Include route to resolution (contact the plan).

The output contract says required key is "message". So output JSON with just "message".

We need answer with JSON code block only. Task: member explanation. Required key: "message" string. Write member-facing text. Five sentences or fewer. Need use exact dollar figures and dates supplied; but there are no dollar amounts? Claim facts: claim number 2026-0655012, denial reason: provider submitted claim 2026-07-30 for DOS 2025-03-14, outside 365-day timely filing limit in provider's contract. Member liability: none. Under provider's participation agreement, a claim denied for untimely filing may not be billed to member. Provider has been notified. If member receives bill, contact plan.

Need craft message to member. No dollar figures to report. Need be eighth-grade reading level. Define term of art first time: timely filing limit? We can say: "Your provider had 365 days (one year) from your date of service to send us the claim. This is called the timely filing limit. The provider sent the claim on 2026-07-30 for your visit on 2025-03-14, which is after that limit, so we denied claim 2026-0655012." Then member liability none: "You do not owe anything for this claim, and the provider cannot bill you for it because of their contract with us." Then: "We have told the provider about this denial." Then: "If you get a bill anyway, please contact us so we can help." Need count sentences: Let's draft.

Need ensure no dollar amounts. Use dates exact: 2025-03-14 and 2026-07-30, claim 2026-0655012. Maybe mention "claim 2026-0655012".

Potential message:

"Your provider had 365 days from your date of service to send us the claim. This deadline is called the timely filing limit. The provider sent claim 2026-0655012 on 2026-07-30 for your visit on 2025-03-14, which is after that limit, so we denied the claim. You do not owe anything, and the provider may not bill you for this denial under their agreement with us. We have notified the provider, and if you receive a bill for this claim, please contact the plan."

Count sentences: 1) Your provider had 365 days... service to send us the claim. 2) This deadline is called the timely filing limit. 3) The provider sent claim 2026-0655012 on 2026-07-30 for your visit on 2025-03-14, which is after that limit, so we denied the claim. 4) You do not owe anything, and the provider may not bill you for this denial under their agreement with us. 5) We have notified the provider, and if you receive a bill for this claim, please contact the plan. That's five sentences. Good.

Need ensure "date of service" maybe define? Date of service is the day you got care. Could mention? The phrase "date of service" might be term of art. The instruction: Define any term of art the first time it appears. "Timely filing limit" we define. "Date of service" maybe also a term of art? It's somewhat operational. But do we need define? Could say "your visit date (the date of service)" to clarify. Let's see: "Your provider had 365 days from your visit on 2025-03-14 (the date of service) to send us the claim." That defines date of service parenthetically. Then "This deadline is called the timely filing limit." Then "The provider sent claim 2026-0655012 on 2026-07-30, which is after that limit, so we denied the claim." Wait need connect to date of service. Let's restructure.

Sentence 1: "Your provider had 365 days from your visit on 2025-03-14 (the date of service) to send us the claim." This defines date of service.
Sentence 2: "This deadline is called the timely filing limit."
Sentence 3: "The provider sent claim 2026-0655012 on 2026-07-30, which is after that limit, so we denied the claim."
Sentence 4: "You do not owe anything, and the provider may not bill you for this denial under their agreement with us."
Sentence 5: "We have notified the provider, and if you receive a bill for this claim, please contact the plan."

Count: 5 sentences. Reading level? Yes. Dates exact. Claim number exact. No dollar figures. Does it say "provider submitted the claim 2026-07-30 for a date of service 2025-03-14". We mention both. Good.

Need ensure "denial reason: provider submitted claim 2026-07-30 for a DOS 2025-03-14, outside 365-day timely filing limit in provider's contract." So we say after that limit. Good.

Need no salutation/sign-off unless item asks for letter. Not asks. So just message.

Need output exactly one fenced JSON code block and nothing else. Ensure JSON valid. String with double quotes, escaping internal quotes? None needed. Use \n? It's a single string; we can include sentences separated by spaces. No newline required. If we include newline characters inside JSON string, must escape as \n or just have spaces. Better to have one line with spaces. But JSON strings can contain newline only if escaped. We'll use spaces.

Key: "message". Value: the string.

Let's check sentence count by punctuation. Ensure no semicolons splitting? We have a comma in sentence 4 "You do not owe anything, and the provider may not bill you..." That's one sentence. Sentence 5 has comma and "and". Good.

Need maybe "claim 2026-0655012" while claim number has leading zeros? It's "2026-0655012". Keep exact.

Maybe "The provider sent claim 2026-0655012 on 2026-07-30, which is after that limit" Wait the claim was submitted 2026-07-30 for DOS 2025-03-14. The date difference: 2025-03-14 to 2026-07-30 is over a year (about 503 days). So after 365-day limit. Good.

Potential issue: "Your provider had 365 days from your visit on 2025-03-14 (the date of service) to send us the claim." The claim was submitted 2026-07-30. That's after the limit. Good.

Need "provider's participation agreement" maybe say "their agreement with us" which is fine. "may not be billed" okay.

Should we include appeal rights? Facts do not include appeal rights/deadlines. We should not invent. The instruction: Where the facts include appeal rights, deadlines, or route to resolution, include them. Facts include: "If the member receives a bill for this claim they should contact the plan." That's a route to resolution. We included. No appeal rights. So fine.

Need maybe mention "This is not a decision about whether the care was medically necessary; it is a filing deadline." But that's extra and maybe not from facts? The denial reason is timely filing, not clinical. Could be helpful but not required. We must stay within facts. It says provider submitted outside limit. It doesn't say not about medical necessity. But saying "This denial is because the claim was filed late, not because of the care you received" could be inferred? It is implied by reason. But adding could risk adding info not supplied? It is directly from denial reason: outside timely filing. The statement "This denial is because the claim was filed late" is supported. But not necessary. Keep simple.

Check reading level: eighth-grade. "participation agreement" perhaps term of art? We say "their agreement with us". Good.

Let's ensure no currency. None.

Now produce JSON.

Wait: The output contract says: Reply with exactly one fenced JSON code block and nothing else. No preamble, no commentary before or after, no second code block.

So final answer:

```json
{
  "message": "Your provider had 365 days from your visit on 2025-03-14 (the date of service) to send us the claim. This deadline is called the timely filing limit. The provider sent claim 2026-0655012 on 2026-07-30, which is after that limit, so we denied the claim. You do not owe anything, and the provider may not bill you for this denial under their agreement with us. We have notified the provider, and if you receive a bill for this claim, please contact the plan."
}
```

Check if there is any issue with "denial" maybe "this denial" refers to claim denied for untimely filing. Fine.

Could there be a requirement to mention "claim 2026-0655012" exactly. We did.

Let's count sentences in final string. 1 ends with "claim." 2 ends "limit." 3 ends "claim." 4 ends "us." 5 ends "plan." Actually sentence 5: "We have notified the provider, and if you receive a bill for this claim, please contact the plan." That ends with period. Good.

One more nuance: The claim ID is "2026-0655012" but claim was submitted 2026-07-30 for DOS 2025-03-14. The claim number starts with 2026 maybe year of submission? No matter.

Need maybe "outside the 365-day timely filing limit in the provider's contract" We mention "under their agreement with us" for no billing. Good.

Let's final.

We need answer with JSON code block only. Required key "message". Need write member-facing text, five sentences or fewer. Roughly eighth grade reading level. Define term of art first time appears. Use exact dollar figures and dates supplied; don't round, no figure not in facts. Here no dollar amount? Claim denial reason: provider submitted claim 2026-07-30 for DOS 2025-03-14, outside 365-day timely filing limit in provider's contract. Member liability: none. Under provider's participation agreement, a claim denied for untimely filing may not be billed to member. Provider has been notified. If member receives a bill for this claim they should contact plan.

Need include appeal rights/deadlines/route to resolution? Facts include: if receives bill contact plan. No appeal rights given. We shouldn't invent appeal rights. We can mention provider notified, member not responsible, if bill contact plan. Need maybe define "timely filing limit" and "participation agreement"? Need define term of art first time appears. The term "timely filing limit" appears; define: the deadline a provider has to send us a claim. "Participation agreement" maybe define: the contract the provider has with the plan. Or "untimely filing" means the provider sent the claim too late. Need 5 sentences or fewer. Let's draft.

Need ensure no salutation/sign-off unless item asks for letter, it doesn't. Just message. No headers/bullet. Let's count sentences.

Draft 1:
"Your claim was denied because the provider sent it to us on 2026-07-30 for a date of service of 2025-03-14, which is past the 365-day timely filing limit, meaning the deadline a provider has to send us a claim. You do not owe anything for this claim, because under the provider's participation agreement, which is the contract the provider has with our plan, a claim denied for late filing cannot be billed to you. We have told the provider about this decision. If you get a bill for this claim, call us so we can help. Please do not pay the bill before you contact us."

Count sentences: 1 "Your claim ... limit, meaning ... claim." (one sentence with comma, participial phrase) 2 "You do not owe ... you." 3 "We have told ... decision." 4 "If you get ... help." 5 "Please do not pay ... us." That's 5 sentences. Good.

Need check reading level eighth grade. "timely filing limit" defined as deadline a provider has to send us a claim. "participation agreement" defined as contract the provider has with our plan. "date of service" maybe term of art? Should we define? It's the date you got the care. But "date of service" is common but maybe define? The instruction: Define any term of art the first time it appears. Date of service is a term of art. We should define it maybe: "date of service, which is the date you got the care,". Let's include. Also "claim" maybe not term? It's common but perhaps. "Provider" maybe. Let's ensure all terms of art defined. Terms: "claim" (a request from a provider to be paid for care). "date of service". "timely filing limit". "participation agreement". Also "denied" not term? "billed" maybe. Let's see.

Need maybe include "late filing" instead of untimely? The denial reason says untimely filing. "Untimely filing" is a term of art, maybe define: "untimely filing, which means the provider sent the claim too late". Actually we define timely filing limit, which implies it. But "untimely filing" appears in member liability sentence. It says "denied for untimely filing may not be billed". We can say "late filing" maybe. But need define any term of art first time appears. "Untimely filing" is the exact term. Should define: "untimely filing, which means the provider sent the claim after the deadline,". Already we define timely filing limit: "the deadline a provider has to send us a claim". Then later use "late filing" or "untimely filing". Maybe define untimely filing first time: "untimely filing, which means the provider sent the claim after the deadline". But we also need date of service. Let's craft carefully.

Need no clinical advice. Fine.

Sentence limit: 5 sentences or fewer. Let's aim exactly 5 or fewer. Let's draft with <=5.

Possible message:

"Your claim, which is a request from your provider to be paid for care, was denied for untimely filing, meaning the provider sent it to us after the deadline. The provider sent the claim on 2026-07-30 for a date of service of 2025-03-14, which is the date you got the care, and that is past the 365-day timely filing limit, meaning the deadline a provider has to send us a claim. You do not owe anything for this claim, because under the provider's participation agreement, which is the contract the provider has with our plan, a claim denied for untimely filing may not be billed to you. We have notified the provider about this decision. If you receive a bill for this claim, contact the plan right away so we can help, and do not pay it before you call us."

Count sentences:
1 Your claim, ... after the deadline. (ends with period)
2 The provider sent ... a claim. (ends with period)
3 You do not owe ... to you. (ends)
4 We have notified ... decision. (ends)
5 If you receive ... call us. (ends)
That's 5 sentences. Good.

Check defined terms:
- "claim": yes, first sentence "Your claim, which is a request from your provider to be paid for care,"
- "untimely filing": yes, first sentence "denied for untimely filing, meaning the provider sent it to us after the deadline."
- "date of service": second sentence "for a date of service of 2025-03-14, which is the date you got the care,"
- "timely filing limit": second sentence "365-day timely filing limit, meaning the deadline a provider has to send us a claim."
- "participation agreement": third sentence "under the provider's participation agreement, which is the contract the provider has with our plan,"
- "billed": maybe "billed to you" not a heavy term? Could define? "billed, meaning asked to pay," but maybe not required; it's not obscure? To be safe maybe include "billed, meaning asked to pay," but sentence length. The instruction says define any term of art first time. Is "billed" a term of art? It's a common word but in healthcare billing context could be. But we can avoid defining? Maybe define: "may not be billed to you, meaning the provider cannot ask you to pay." Let's see if we can fit. Could replace "may not be billed to you" with "the provider cannot ask you to pay for it." That might be clearer and not use billed. But facts say "may not be billed to the member". We can say "cannot send you a bill or ask you to pay". Actually we need use exact figures/dates; no dollar figure here. We can say "may not be billed to you, meaning you cannot be asked to pay." Let's incorporate.

Revised third sentence: "You do not owe anything for this claim, because under the provider's participation agreement, which is the contract the provider has with our plan, a claim denied for untimely filing may not be billed to you, meaning the provider cannot ask you to pay." This is one sentence? Let's see: "You do not owe anything for this claim, because under the provider's participation agreement, which is the contract the provider has with our plan, a claim denied for untimely filing may not be billed to you, meaning the provider cannot ask you to pay." Yes, one sentence (starts You, ends pay.). It defines billed. Good.

Also "provider" maybe term? It's common, but maybe define? Not necessary? Provider is a person or place that gives care; but maybe define? In first sentence "your provider" but not defined. Could say "your provider, the doctor or facility that gave you care," but might be too much and add sentences? Let's see. The instruction: define any term of art the first time it appears. "Provider" might be considered term of art in healthcare. We can define it in first sentence: "Your claim, which is a request from your provider, the doctor or facility that gave you care, to be paid, was denied..." This is okay. But "provider" appears multiple times; first appears in "your provider". Let's adjust first sentence to define provider too? Let's construct:

"Your claim, which is a request from your provider, the doctor or facility that gave you care, to be paid, was denied for untimely filing, meaning the provider sent it to us after the deadline."

This is one sentence, but a bit clunky: "request from your provider, the doctor or facility that gave you care, to be paid" - maybe "request from your provider, meaning the doctor or facility that gave you care, to be paid for that care". Hmm. Need readability.

Maybe define provider separately later? But term of art first time appears: in first sentence. If we don't define it, is that penalized? The scoring likely checks message content, not strict definitions? The instruction says define any term of art first time it appears. We should comply. Let's define provider first time. But then "claim" also first time. We can combine: "Your claim, which is a request for payment from your provider, the doctor or facility that gave you care, was denied..." That's okay. Then "untimely filing" defined. Let's draft:

Sentence 1: "Your claim, which is a request for payment from your provider, the doctor or facility that gave you care, was denied for untimely filing, meaning the provider sent it to us after the deadline."
Check: "for payment from your provider, the doctor or facility that gave you care," reads okay.

Sentence 2: "The provider sent the claim on 2026-07-30 for a date of service of 2025-03-14, which is the date you got the care, and that is past the 365-day timely filing limit, meaning the deadline a provider has to send us a claim."
But in sentence 2 we say "a provider" again; already defined. Good.

Sentence 3: "You do not owe anything for this claim, because under the provider's participation agreement, which is the contract the provider has with our plan, a claim denied for untimely filing may not be billed to you, meaning the provider cannot ask you to pay."
Note: "provider's" and "the provider" refer to defined term. Good. "participation agreement" defined. "billed" defined.

Sentence 4: "We have notified the provider about this decision."

Sentence 5: "If you receive a bill for this claim, contact the plan right away so we can help, and do not pay it before you call us."

Count sentences: 5. Good. Does it use exact dates? Yes: 2026-07-30 and 2025-03-14. No dollar figure because none. Did we introduce a figure not in facts? No. Did we round? N/A. Did we include appeal rights? None given. Include route to resolution: contact plan if bill; we have notified provider. Good.

Need check "timely filing limit" definition: "the deadline a provider has to send us a claim". In sentence 2, "that is past the 365-day timely filing limit, meaning the deadline a provider has to send us a claim." But "365-day" modifies limit; this says the deadline is 365 days after date of service? The fact: "outside the 365-day timely filing limit in the provider's contract." We don't need explain 365 days from when, just say limit is 365 days. "past the 365-day timely filing limit, meaning the deadline a provider has to send us a claim" is fine.

Wait: The denial reason: provider submitted claim 2026-07-30 for DOS 2025-03-14, outside the 365-day timely filing limit. The gap from 2025-03-14 to 2026-07-30: Let's compute: 2025-03-14 + 365 days = 2026-03-14 (2025 not leap? 2025 is not leap, 365 days later is 2026-03-14). Submitted 2026-07-30, which is about 503 days later, yes outside 365. We don't need compute.

Need check "provider cannot ask you to pay" - under participation agreement, claim denied for untimely filing may not be billed to member. So yes.

Need ensure no salutation/sign-off. Good.

Now output exactly one fenced JSON code block. The key is "message". The value string must escape quotes? It's a JSON string; we need embed sentence with no quotes inside? We can avoid double quotes inside. We have no double quotes inside. Use normal punctuation. Need ensure newline? JSON string can contain no actual newline? It can contain escaped \n but not required. Better to have a single line string or use \n? The message is multiple sentences; we can put them separated by spaces, not newlines. The output contract says exactly one fenced JSON code block. We can format with pretty JSON? It says reply with exactly one fenced JSON code block and nothing else. Within JSON, key "message" with string. Pretty print is okay. No extra text.

Need be careful: JSON must be valid. Use double quotes for key. The string value: if we include apostrophes? We have "provider's" which contains apostrophe, that's fine in JSON as it's not a quote. But we must not have unescaped newline inside string; we will keep as one line or use spaces. Let's construct final JSON:

```json
{
  "message": "Your claim, which is a request for payment from your provider, the doctor or facility that gave you care, was denied for untimely filing, meaning the provider sent it to us after the deadline. The provider sent the claim on 2026-07-30 for a date of service of 2025-03-14, which is the date you got the care, and that is past the 365-day timely filing limit, meaning the deadline a provider has to send us a claim. You do not owe anything for this claim, because under the provider's participation agreement, which is the contract the provider has with our plan, a claim denied for untimely filing may not be billed to you, meaning the provider cannot ask you to pay. We have notified the provider about this decision. If you receive a bill for this claim, contact the plan right away so we can help, and do not pay it before you call us."
}
```

Check string: "provider's" has an apostrophe, fine. No unescaped double quotes. Good.

Sentence count: Let's count with punctuation:
1. "Your claim, ... deadline." (ends with period after deadline)
2. "The provider sent the claim ... a claim." (period after claim)
3. "You do not owe ... pay." (period after pay)
4. "We have notified the provider about this decision." (period)
5. "If you receive a bill ... call us." (period)
Exactly 5 sentences. Good.

Need maybe "contact the plan" route. Yes. The facts say "they should contact the plan." We say "contact the plan right away". Good.

Potential issue: "billed to you, meaning the provider cannot ask you to pay." Actually "billed" means sent a bill, not necessarily ask to pay? Close enough. Better: "may not be billed to you, meaning the provider cannot send you a bill or ask you to pay." That is a bit more precise. Let's edit sentence 3: "... may not be billed to you, meaning the provider cannot send you a bill or ask you to pay." That's still one sentence. Let's use that to avoid under-defining. But we have "If you receive a bill" later. It's okay.

Let's incorporate: Sentence 3: "You do not owe anything for this claim, because under the provider's participation agreement, which is the contract the provider has with our plan, a claim denied for untimely filing may not be billed to you, meaning the provider cannot send you a bill or ask you to pay."

Now sentence 5 says "If you receive a bill for this claim, contact the plan right away..." That's consistent: they shouldn't, but if they do, contact. Good.

One more: The instruction says "Use the exact dollar figures and dates supplied; do not round them and do not introduce a figure that is not in the facts." We have no dollar figures. We used dates exactly: 2026-07-30, 2025-03-14. We used 365-day; that's in facts ("365-day timely filing limit"). Good.

"Respect any sentence limit the item gives." Item says five sentences or fewer. We have 5.

Reading level eighth grade: Words are simple, definitions clear. Good.

Need maybe "date of service of 2025-03-14, which is the date you got the care" - good.

Let's ensure the message doesn't say what care they need, no clinical advice. Fine.

Now produce final answer with only fenced JSON block. No other text.

We need answer to task Item EOB-007. Need write a member-facing message explaining coverage decision. We have facts: Claim 2026-0655012. Denial reason: provider submitted claim on 2026-07-30 for date of service 2025-03-14, outside the 365-day timely filing limit in provider's contract. Member liability: none. Under provider's participation agreement, a claim denied for untimely filing may not be billed to member. Provider notified. If member receives a bill for this claim they should contact plan.

Need output exactly one fenced JSON code block with key "message" string. Five sentences or fewer. Need write at roughly eighth-grade reading level. Define any term of art first time appears. Use exact dollar figures and dates supplied; no dollar figures in facts? Wait facts don't include dollar amounts, but mention claim number, dates, etc. There are no dollar amounts. "Use exact dollar figures and dates supplied; do not round them and do not introduce a figure that is not in facts." No dollar figures supplied, so no dollar amounts. Need mention claim number? Probably yes to identify claim. Need explain denial because provider filed late. Need define timely filing? "timely filing limit" is a term of art. First time appears define it: the deadline for the provider to send us the claim. The claim was for a service on March 14, 2025, but the provider sent it to us on July 30, 2026. That is more than 365 days (one year) after the service, so it is outside the timely filing limit. Because the claim is denied for late filing, you do not owe anything. Under the provider's contract with us, they cannot bill you for a claim denied for being filed late. We have told the provider. If you get a bill for this claim, please contact us (the plan). Need include appeal rights? Facts do not include appeal rights/deadlines/route to resolution. Task says where facts include appeal rights, deadlines, or route to resolution, include them. Here only route to resolution is "contact the plan" if bill received. Include that. No appeal rights mentioned. Do not promise outcome under review? Not under review; denial is final based on contract? Maybe say "We have denied the claim" not under review. Also might mention member liability none. The provider has been notified. Need five sentences or fewer. Let's draft. Need JSON string with message as one string. Must be valid JSON. Need escape quotes if any. Keep sentences count <=5.

We need define term of art first time appears: "timely filing limit" perhaps. Also "date of service" maybe term? Could define: the date you got the service. Let's write:

"Your claim 2026-0655012 is denied because the provider filed it late. The date of service is the day you received the care, March 14, 2025, but the provider sent the claim to us on July 30, 2026. A timely filing limit is the deadline for a provider to send us a claim, and this provider’s contract sets that limit at 365 days (one year) from the date of service. Because the claim was filed after that deadline, you owe nothing, and under the provider’s contract with us they cannot bill you for it. We have notified the provider, and if you receive a bill for this claim, please contact the plan."

Count sentences: 1) Your claim ... denied because provider filed it late. 2) The date of service is the day you received the care, March 14, 2025, but the provider sent the claim to us on July 30, 2026. 3) A timely filing limit is the deadline for a provider to send us a claim, and this provider’s contract sets that limit at 365 days (one year) from the date of service. 4) Because the claim was filed after that deadline, you owe nothing, and under the provider’s contract with us they cannot bill you for it. 5) We have notified the provider, and if you receive a bill for this claim, please contact the plan.

That's 5 sentences exactly. Need eighth-grade reading level. It defines "date of service" and "timely filing limit". Use exact dates: 2025-03-14? The facts use dates ISO? "Date of service 2025-03-14". In the denial reason: "date of service 2025-03-14". The prompt says dates are ISO 8601. The task says use exact dollar figures and dates supplied; do not round them and do not introduce a figure that is not in facts. For member-facing text, can we write March 14, 2025, or should we use 2025-03-14? The instruction says dates are ISO 8601. It likely expects dates in ISO format? Wait ground rules: "Dates are ISO 8601 (YYYY-MM-DD)." That means when reporting dates in the answer, use ISO 8601. But for member-facing message, it's natural to write "March 14, 2025". However the output contract says "Use the exact dollar figures and dates supplied; do not round them and do not introduce a figure that is not in the facts." The dates supplied are "2026-07-30" and "2025-03-14" and claim number. To be safe and comply with "Dates are ISO 8601", I should use ISO dates in the message: "2025-03-14" and "2026-07-30". The ground rule says dates are ISO 8601. That is a global rule: "Dates are ISO 8601 (YYYY-MM-DD)." So in the message, use "2025-03-14" and "2026-07-30". The member-facing text can still be understandable. E.g., "The date of service (the day you got the care) was 2025-03-14, but the provider sent the claim to us on 2026-07-30."

Need mention 365-day limit. The contract has 365-day timely filing limit. Use "365 days (one year)"? It says exact dates and figures; 365 is in facts. "one year" is not a figure, just explanation. Fine.

Need maybe mention claim number: "Your claim 2026-0655012". Good.

Need be careful: "The provider has been notified." We say "We have notified the provider". Good.

Need include: If member receives a bill for this claim they should contact the plan. We say "if you receive a bill for this claim, please contact the plan." Should we provide how to contact? Facts don't give phone number. So just contact the plan.

Need no clinical advice. Good.

Need check sentence count: Let's re-evaluate final text with ISO dates.

Draft final message string:

"Your claim 2026-0655012 is denied because the provider filed it late. The date of service (the day you got the care) was 2025-03-14, but the provider sent the claim to us on 2026-07-30. A timely filing limit is the deadline for a provider to send us a claim, and this provider’s contract sets that limit at 365 days (one year) from the date of service. Because the claim was filed after that deadline, you owe nothing, and under the provider’s contract with us they cannot bill you for a claim denied for late filing. We have notified the provider, and if you receive a bill for this claim, please contact the plan."

Let's count sentences:
1. Your claim 2026-0655012 is denied because the provider filed it late.
2. The date of service (the day you got the care) was 2025-03-14, but the provider sent the claim to us on 2026-07-30.
3. A timely filing limit is the deadline for a provider to send us a claim, and this provider’s contract sets that limit at 365 days (one year) from the date of service.
4. Because the claim was filed after that deadline, you owe nothing, and under the provider’s contract with us they cannot bill you for a claim denied for late filing.
5. We have notified the provider, and if you receive a bill for this claim, please contact the plan.

Yes, 5 sentences. The second sentence has parentheses, still one sentence. Fifth sentence has a comma and two clauses, one sentence. Good.

Need define any term of art first time appears. Terms: "denied"? Not necessary. "date of service" first appears in sentence 2, defined as the day you got the care. "timely filing limit" appears in sentence 3, defined as the deadline for a provider to send us a claim. "provider’s contract" maybe not a term of art needing definition. "late filing" in sentence 4 refers back. Good.

Check: Did we say "claim 2026-0655012" exact. Yes.

Do we need to mention "date of service 2025-03-14, outside the 365-day timely filing limit"? Yes explained. The claim was submitted 2026-07-30, which is more than 365 days after 2025-03-14? Let's check: from 2025-03-14 to 2026-07-30 is >365 days; indeed outside limit. We don't need to do math.

Need output only fenced JSON code block. The JSON object must have key "message". No other keys. So:

```json
{
  "message": "Your claim 2026-0655012 is denied because the provider filed it late. The date of service (the day you got the care) was 2025-03-14, but the provider sent the claim to us on 2026-07-30. A timely filing limit is the deadline for a provider to send us a claim, and this provider’s contract sets that limit at 365 days (one year) from the date of service. Because the claim was filed after that deadline, you owe nothing, and under the provider’s contract with us they cannot bill you for a claim denied for late filing. We have notified the provider, and if you receive a bill for this claim, please contact the plan."
}
```

Need escape any quotes inside? The string contains no double quotes except JSON delimiters. It has parentheses and apostrophes? "provider’s" uses a right single quotation mark (U+2019) or ASCII apostrophe? In JSON, ASCII apostrophe ' is fine, but I typed "provider’s" with a curly apostrophe. That's okay in JSON string; it's a Unicode character. But to be safe, use straight ASCII apostrophe? JSON allows any Unicode. But let's use standard ASCII: "provider's". In my draft I used "provider’s" with curly. Let's replace with ASCII: "provider's". Also "date of service (the day you got the care)" uses parentheses. Good.

Wait: The term "date of service" is used before it's defined? Sentence 2: "The date of service (the day you got the care) was 2025-03-14..." That's defining it inline as used. Good.

Check reading level: "Your claim ... is denied because the provider filed it late." Good. "The date of service (the day you got the care) was 2025-03-14, but the provider sent the claim to us on 2026-07-30." Good. "A timely filing limit is the deadline for a provider to send us a claim, and this provider's contract sets that limit at 365 days (one year) from the date of service." Good. "Because the claim was filed after that deadline, you owe nothing, and under the provider's contract with us they cannot bill you for a claim denied for late filing." Good. "We have notified the provider, and if you receive a bill for this claim, please contact the plan." Good.

One nuance: "under the provider's contract with us they cannot bill you" - facts say "Under the provider's participation agreement, a claim denied for untimely filing may not be billed to the member." Participation agreement = contract. Good.

Should we say "may not be billed" or "cannot bill"? "cannot bill you" is fine.

Need mention "The provider has been notified" - we wrote "We have notified the provider". Good.

No appeal rights. Don't invent.

Need exactly one fenced JSON code block and nothing else. Ensure no trailing text. Use ```json ... ```. No "null". Good.

Let's produce final.