ClaimClock

A proactive claim-denial watchdog that connects to your insurer via the CMS patient-access API, surfaces every denial the moment it lands with the appeal deadline as a ticking clock, and one-tap files a personalized appeal that cites the right state law and — when an AI-only denial is suspected — names the algorithm by lawsuit.

Problem

Health insurers reverse 80%+ of denials that are actually appealed, but fewer than 0.2% of patients ever file an appeal. The reasons are blunt: most people don't realize they were denied until a collection notice hits, the 60-day clock has already drained, the EOB language is unreadable, and the appeal portal asks for documents the patient never knew existed. Meanwhile insurers are leaning harder on algorithmic adjudication — UnitedHealth's nH Predict tool drove its post-acute care denial rate from 10.9% to 22.7% after deployment, Cigna's PxDx engine batch-denied claims at roughly two-per-second, and CMS's April 2025 Final Rule for the 2026 Medicare Advantage program dropped the AI guardrails it had floated in November 2024. Industry analysts are openly forecasting a 2026 denial spike. The asymmetry is now algorithmic on one side and entirely manual on the other.

Target user

Working-age adults and Medicare Advantage seniors who have just had a claim, a prior auth, or a continuation-of-care request denied — plus the adult children, partners, and patient advocates who get pulled in to "deal with the insurance thing." Secondary: chronic-condition patients (oncology, MS, mental health, post-acute rehab) where prior-auth velocity matters most. Job-to-be-done: "Tell me the moment something is denied, tell me how many days I have left to fight it, and give me a one-tap appeal that's actually going to win — not a templated PDF I have to fax myself."

MVP scope

• EOB ingest via CMS Blue Button / patient-access FHIR: user authenticates with their insurer's patient-access API (federally mandated under the 21st Century Cures Act); ClaimClock pulls the live ExplanationOfBenefit and Claim FHIR resources and decodes the CARC/RARC denial codes into plain English.
• The Clock: every denied claim renders as a card with a single visible countdown — days remaining in the internal-appeal window, with a second concentric ring for the external-review deadline. Push notifications fire at day-of-denial, day-30, day-15, day-7, and day-3.
• AI-denial fingerprinting: heuristics flag denials with sub-30-second insurer turnaround, no human-reviewer name attached, and insurer-of-record in the public algorithmic-denial lawsuit registry. Flagged denials get a second appeal-paragraph that demands physician review under the CMS 2024 Final Rule and cites the relevant class action by docket number.
• State-law picker: the appeal letter generator auto-selects the most patient-favorable applicable law — Arizona HB 2175, California SB 1120, Texas HB 711, ERISA §503 for self-insured plans — based on the patient's residence, the insurer's state of licensure, and whether the plan is fully-insured or self-funded.
• Triple-track filing: internal appeal first; if denied or silent at the regulatory deadline, the app pre-populates the external-review (IRO) request and, in parallel, the state insurance-commissioner complaint. The patient signs once and ClaimClock sequences the rest.
• Evidence locker: the patient can attach photos of receipts, doctor notes, and prescription history. The app auto-generates the records-request letter to the provider when documents are missing.
• No PHI sold, ever: explicit "your records never train our models, never get sold to third parties" promise, mirrored in a one-page plain-English privacy policy displayed on first run.

Monetization

Freemium. Free tier: 1 active appeal at a time, manual letter generation, basic deadline alerts — enough that a first-time user wins their first appeal before paying. Pro at $12/mo or $99/yr: unlimited active appeals, EOB auto-sync, AI-denial fingerprinting, auto-filing via fax/portal/secure-message, external-review and commissioner-complaint automation. Family at $19/mo for up to 5 covered lives (parents managing a kid + an aging parent is the modal upgrade trigger). Employer add-on: a per-employee-per-month SKU sold into self-insured HR benefits stacks as a "claim navigation" benefit, white-labeled. Rough intuition: a single reversed denial on a $4,000 rehab stay is a 10×+ ROI on a year of Pro, which makes the conversion math forgiving.

Why now

Algorithmic denial is no longer a fringe story — it is a multi-defendant class-action wave (UnitedHealth nH Predict, Cigna PxDx, Humana, Aetna) with discovery now being granted by federal courts. CMS's April 2025 Final Rule for the 2026 MA program quietly walked back the AI guardrails it had previewed in November 2024, and four states passed laws in 2025 banning AI-only medical-necessity denials, creating a patchwork that consumers cannot navigate alone. The 21st Century Cures Act finally has teeth: patient-access FHIR APIs are now broadly live across the major payers, making real-time EOB ingestion feasible for the first time. And the consumer-side AI-appeal category is being validated commercially — Bloomberg's April 22, 2026 feature on Mark-Cuban-backed Claimable documents thousands of reversed denials, but Claimable is provider-led and drug-deal-funded; the patient-pocket, mobile-first, deadline-anchored slot is open.

Risks & open questions

• Patient-access API coverage: not every payer's FHIR endpoint is mature; need a manual-upload fallback that still anchors The Clock.
• HIPAA business-associate posture: ClaimClock is not a covered entity, but the EOB ingest creates a BAA-adjacent footprint. Need clear legal scoping before launch — likely a Business Associate Agreement with any provider/insurer integration, and SOC 2 from day one.
• State unauthorized-practice-of-law risk: appeal-letter generation in some states could brush UPL statutes. Pattern after LegalZoom: templates, not advice; patient signs everything.
• Insurer counter-tooling: insurers may add captchas or rate limits on appeal-portal automation; need a fax-and-mail fallback path.
• Will the same patients who don't appeal today install an app? The acquisition wedge probably isn't "have you been denied" — it's recruiting at the moments denials are most visible (post-discharge social workers, oncology navigators, infusion centers, chronic-condition subreddits).

Next step

Validate by interviewing 5 chronic-condition patients and 3 hospital patient-advocate / case-management staff about the actual denial-to-appeal latency they live with today, then prototype the FHIR ingest against one major payer's sandbox (UHC or Aetna Develop) before committing to letter-generation depth. Strong candidate for promotion to a weekly prototype.

Sources

• https://www.cbsnews.com/news/unitedhealth-lawsuit-ai-deny-claims-medicare-advantage-health-insurance-denials/ — UnitedHealth nH Predict class action and the 10.9% → 22.7% denial-rate jump
• https://www.bloomberg.com/news/features/2026-04-22/ai-and-mark-cuban-among-startup-s-tools-to-fight-denied-health-care-claims — April 22, 2026 feature documenting thousands of AI-assisted appeal reversals (Claimable)
• https://www.afslaw.com/perspectives/health-care-counsel-blog/health-insurers-sued-over-use-artificial-intelligence-deny — multi-defendant lawsuit landscape (Cigna PxDx, UHC, others)
• https://www.nortonrosefulbright.com/en/knowledge/publications/644bd9a2/cms-clarifies-medicare-advantage-organizations-use-of-ai-and-algorithms-in-coverage-decisions — CMS 2026 MA Final Rule dropped previewed AI guardrails
• https://humanmedicalbilling.com/blog/the-2026-medicare-advantage-shift-why-denials-will-spike/ — 2026 Medicare Advantage denial-spike forecast
• https://www.pbs.org/newshour/show/how-patients-are-using-ai-to-fight-back-against-denied-insurance-claims — patient-side AI appeal adoption and the <0.2% appeal-filing baseline
• https://www.acsh.org/news/2026/03/09/aigorithm-said-no-50002 — March 2026 analysis of algorithmic denials and reversal asymmetry