Caremark denied your claim: how to appeal
CVS Caremark is one of the three largest pharmacy benefit managers in the U.S., administering drug coverage for commercial, Medicare Part D, and Medicaid plans. Caremark denials are issued at the pharmacy benefit layer, separate from the medical benefit, and have their own appeal track.
If CVS Caremark denied a claim or service, you can appeal, and the plan must give you its file and the criteria it used. Filing windows by plan type: at least 180 days (employer self-funded plans); at least 180 days (insured and Marketplace plans); 65 days from the notice (Part D); 60 days from the notice (Medicaid managed care). The date printed on your denial notice controls; it can only be later than these floors, never earlier.
CVS Caremark appeals: the rule, the deadline and the next level, by plan type
CVS Caremark adjudicates the pharmacy benefit for a plan sponsor, so the sponsor's rules govern the appeal: an employer plan (ERISA), an insured or Marketplace plan, Medicare Part D or Medicaid. The denial letter names the plan whose rules apply.
| Plan type | Rule that governs | File your appeal within | The plan must answer | If the plan says no again |
|---|---|---|---|---|
| Employer self-funded plan (ERISA) Most large employers. The employer pays the claims and hires the carrier to administer them; the Summary Plan Description says self-funded or self-insured. | ERISA § 503 (29 U.S.C. § 1133) and the claims-procedure rule, 29 CFR 2560.503-1. Federal external review under 45 CFR 147.136(d) for non-grandfathered plans. | At least 180 days from the adverse benefit determination (29 CFR 2560.503-1(h)(3)(i)). | Urgent care: 72 hours. Pre-service: 30 days. Post-service: 60 days (29 CFR 2560.503-1(i)(2)). | Federal external review by an accredited independent review organization, requested within 4 months of the final internal denial (45 CFR 147.136(d)); then a civil action under ERISA § 502(a). State insurance departments do not regulate self-funded plans; the U.S. Department of Labor does. |
| Fully insured employer, individual or Marketplace plan The carrier holds the risk and is licensed in your state. Small employers and almost all individual and HealthCare.gov plans. | 45 CFR 147.136 (Public Health Service Act § 2719), which applies the 29 CFR 2560.503-1 procedures and adds state external review; state insurance law on top. | At least 180 days from the denial (45 CFR 147.136(b); 29 CFR 2560.503-1(h)(3)(i)). | Urgent care: 72 hours. Pre-service: 30 days. Post-service: 60 days. Prior-authorization decisions by Marketplace issuers from 2026: 72 hours expedited, 7 calendar days standard (CMS-0057-F). | External review through your state's process, or the federal process where the state has none, generally within 4 months of the final internal denial (45 CFR 147.136(c), (d)). The state insurance department and its Consumer Assistance Program take complaints. |
| Medicare Part D (drug plan or MA-PD) A stand-alone drug plan or the drug benefit inside a Medicare Advantage plan. | 42 CFR Part 423, Subpart M; exceptions under 42 CFR 423.578. | 65 calendar days from the date on the notice to request a redetermination (42 CFR 423.582, as amended effective 1 January 2025). Formulary, tiering and step-therapy exceptions need the prescriber's supporting statement (§ 423.578). | Redetermination: 7 calendar days standard, 72 hours expedited (42 CFR 423.590). Coverage determinations: 72 hours standard, 24 hours expedited, once the prescriber's statement is received (§§ 423.568, 423.572). | Independent Review Entity reconsideration on your request within 65 days of the redetermination notice (§ 423.600); then ALJ, Council and court. |
| Medicaid managed care plan A Medicaid plan run by the carrier under a state contract. The card says Medicaid, Medi-Cal, STAR, HealthChoice or your state's programme name. | 42 CFR Part 438, Subpart F (plan appeals) and 42 CFR Part 431, Subpart E (state fair hearings). | 60 calendar days from the date on the notice of adverse benefit determination to request the plan's appeal (42 CFR 438.402(c)(2)(ii)). State fair hearing: within 120 calendar days of the plan's appeal decision (§ 438.408(f)(2)). | Standard appeal: 30 calendar days. Expedited: 72 hours (42 CFR 438.408(b)). | A state fair hearing after the plan's single level of appeal (§ 438.402(b)); some states add an external medical review. Benefits continue during the appeal if you ask within 10 calendar days of the notice (§ 438.420). |
What you can demand. The plan must give you the claim file, the internal rule or criterion it relied on, and the identity of the reviewer, free of charge, on request (29 CFR 2560.503-1(h)(2)(iii), (m)(8)).
How to open the appeal. Cite ERISA § 503 and 29 CFR 2560.503-1 in the opening paragraph: request the claim file and the specific criteria relied on, and note the 30-day (pre-service), 60-day (post-service) and 72-hour (urgent) decision clocks.
What you can demand. The plan must give you the claim file, the criteria it applied and any new evidence or rationale before the final decision, free of charge (45 CFR 147.136(b)(2)(ii)(C); 29 CFR 2560.503-1(h)(2)(iii)).
How to open the appeal. Cite 45 CFR 147.136 and 29 CFR 2560.503-1: request the claim file and the criteria, note the decision clocks, and name the state external-review right.
What you can demand. The exception turns on the prescriber's statement that the formulary alternative would be less effective or would harm you (42 CFR 423.578(b)(5)).
How to open the appeal. Cite 42 CFR 423.578 and 423.582 and attach the prescriber's supporting statement written to the exception standard.
What you can demand. Free copies of the case file, medical records and the criteria used, before and during the appeal (42 CFR 438.406(b)(5)). Children under 21 have EPSDT rights to medically necessary care (42 U.S.C. 1396d(r)(5)).
How to open the appeal. Cite 42 CFR 438.402 and 438.406(b)(5): request the case file and the criteria, ask for continued benefits within 10 days, and reserve the state fair hearing.
Primary sources for this table
- 29 CFR 2560.503-1, ERISA claims procedure
- 45 CFR 147.136, internal claims and appeals and external review
- U.S. Department of Labor, EBSA, health benefit claims and appeals
- HealthCare.gov, how to appeal an insurance company decision
- CMS-0057-F, prior-authorization decision timeframes from 2026
- 42 CFR Part 423, Subpart M, Part D coverage determinations, redeterminations and reconsiderations
- 42 CFR 423.578, Part D exceptions process
- Medicare.gov, claims and appeals
- 42 CFR Part 438, Subpart F, Medicaid managed care grievance and appeal system
- 42 CFR Part 431, Subpart E, Medicaid fair hearings
Windows are federal floors or the rule as written; the denial notice controls. Reviewed 13 September 2026. General information, not legal advice; Apellica is not a law firm.
Patterns we see on Caremark denials
Formulary and tiering exception requests
Most Caremark denials are formulary or tiering issues: a drug is non-formulary, on a higher tier, or subject to step therapy. The standard appeal lane is a formulary or tiering exception with the prescriber's clinical justification.
Specialty drug prior authorization
High-cost specialty drugs (biologics, oncology, MS, RA) route through Caremark Specialty and require detailed clinical documentation. Manufacturer-supplied clinical dossiers and FDA label citations speed the exception process.
Part D coverage determination ladder
For Medicare Part D plans administered by Caremark, denials follow the federal Part D appeal ladder: coverage determination → redetermination → IRE (MAXIMUS) → ALJ → Council → federal court. Each level has its own short deadline.
Coverage determination / exception request, then plan-level redetermination, then external review (IRO for commercial; IRE / MAXIMUS for Medicare Part D).
Standard exception requests: 72 hours commercial / 72 hours Part D. Expedited: 24 hours. Redetermination filing window: 65 days from the notice for Part D (42 CFR 423.582), at least 180 days for commercial.
How we file Caremark appeals
Caremark and the medical-benefit carrier (e.g. Aetna) maintain separate appeal records. We file in the correct lane from the start so the clock does not run on the wrong track.
Caremark denials: the questions people ask
How long do I have to appeal a Caremark denial?
Standard exception requests: 72 hours commercial / 72 hours Part D. Expedited: 24 hours. Redetermination filing window: 65 days from the notice for Part D (42 CFR 423.582), at least 180 days for commercial. Count from the date on the denial letter, not the date you opened it.
Where do I send a Caremark appeal?
The appeal address, fax number or portal for your specific plan is printed on your denial letter, usually under a heading like "Your right to appeal" or "How to request a review". We deliberately do not publish one address per carrier: Caremark routes appeals differently by employer group, region, product line and appeal level, and sending it to the wrong place can cost you the deadline. If the letter does not state where to send it, that omission is itself worth raising in the appeal, and the member number on your card reaches someone who must tell you.
What should a Caremark appeal letter include?
The member and claim numbers, the exact denial reason quoted from the letter, the clinical records that answer that specific reason, and a request in writing for the criteria the decision was based on and a copy of the claim file. Appeals succeed on what you attach more than on how strongly you argue, because the first reviewer often never saw the full chart.
What happens if Caremark denies the appeal again?
Coverage determination / exception request, then plan-level redetermination, then external review (IRO for commercial; IRE / MAXIMUS for Medicare Part D). After a final internal denial, external review by an independent organisation is a separate lane, it is free to you, and the decision binds the plan. Which external review applies depends on whether your plan is employer self-funded, state-regulated, Medicare or Medicaid.
Caremark appeal guides by denial type
What Caremark tends to cite for each kind of denial, the rule that controls it, and what the appeal has to say.
Denied by Caremark? Let's appeal it.
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Start Your AppealDisclaimer: information shown is general guidance, not legal advice or a guarantee of outcome. Individual case outcomes depend on documentation, timing, and the specific terms of your plan.