What Is a Peer-to-Peer Review? Plan Call, Not an Appeal
How a Peer-to-Peer Review Differs From a Formal Appeal
Key Takeaway: The call is a utilization-management conversation about the plan's clinical criteria. The appeal is the written process on the denial notice. Treat them as two tracks that can run in the same week — not as substitutes.
After a prior-authorization or medical-necessity denial, many commercial plans offer a short window for the ordering clinician to speak with the plan's medical director or a contracted reviewer. The reviewer already has the denial reason. The treating clinician brings the chart: diagnosis, failed alternatives, imaging or lab findings, and why the requested drug, test, or procedure meets the criteria the letter cited.
That conversation is not listed as a federal appeal step. Healthcare.gov's internal-appeals page tells you to complete the insurer's forms — or write with your name, claim number, and member ID — and to send any extra information you want considered, such as a letter from the doctor. If the plan still denies the claim, the same page points you to external review. Those are the formal rights. A peer-to-peer slot is extra process the plan may offer around a prior authorization.
When Do Plans Offer a Peer-to-Peer Call?
Key Takeaway: There is no single federal clock or federal form for peer-to-peer review. The denial letter and the utilization-management phone number set the request window. If that window closes before your written appeal is due, file the appeal anyway.
Plans usually offer the call after a pre-service denial — a refused authorization for a drug, imaging study, surgery, or durable medical equipment. Some vendors schedule it only if the treating clinician asks. Others print a callback number and a date after which the offer expires. That date is a plan rule, not a Healthcare.gov or Department of Labor appeal deadline.
Ask the number on the denial: who may request the call, how many business days you have, and whether the decision will be verbal, written, or both. Write down the day, time, reviewer name, and title. Healthcare.gov tells you to keep notes from phone conversations that relate to your appeal, including the person you spoke with and what was said. Those notes belong in the written packet if the denial stands.
Who Has to Be on the Call?
Key Takeaway: The treating clinician — or another clinician the plan accepts as a peer — speaks with the plan reviewer. A patient-only call is not a peer-to-peer review. You can ask the office to request the slot and to bring the same records you would attach to a written appeal.
Bring a one-page fact sheet the clinician can read from: diagnosis and ICD-10 codes, the CPT or J-code requested, the exact criteria line the denial quoted, what was already tried, and the guideline or labeling the office is using. If the plan cited a medical policy number, have that policy open. If the issue is missing chart notes, send them before the call so the reviewer is not hearing about them for the first time.
- Denial letter and the clinical criteria or policy the plan named
- Clinic notes, imaging or lab reports, and a list of failed or contraindicated alternatives
- The written-appeal deadline circled on a calendar — the call does not move that date
Need a Written Appeal After the Call?
AppealFlow drafts a prior-authorization appeal letter from the denial reason and facts you enter. The peer-to-peer call stays between clinicians. You still file on the portal or address on the notice.
Weak vs. Strong Language After a Peer-to-Peer Denial
Key Takeaway: Name the call date, the reviewer, the criteria discussed, and the written appeal you are filing. A complaint that the reviewer “did not listen” does not give the next examiner a record to review.
| ❌ Weak Request | ✓ Strong Request |
|---|---|
| “We already did peer-to-peer. Just approve this now.” | “Peer-to-peer on [date] with [reviewer name/title], claim or auth #[number]. The reviewer cited [policy/criteria]. Attached are [notes, failed alternatives, guideline]. I file this internal appeal under the process on the [date] denial notice.” |
| “The doctor said the call would fix it, so I did not send a letter.” | “The call did not overturn the denial. This writing is the internal appeal required by the notice. Please issue a written determination and external-review instructions if you uphold.” |
| “I have a right to a peer-to-peer under federal law before you can deny me.” | “Federal appeal rights on Healthcare.gov are internal appeal and, if needed, external review. The plan offered a clinician call as utilization management. I completed / requested that call on [date] and now file the written appeal.” |
Does a Failed Peer-to-Peer End My Appeal Rights?
Key Takeaway: No. A declined, missed, or unsuccessful call is not a final external-review decision. File the internal appeal on the notice, then external review if the plan upholds the denial.
Healthcare.gov's internal-appeals page lists the kinds of denials you can appeal — including services the plan calls not medically necessary — and states that if the insurer still denies the claim after the internal appeal, you can file for external review. The Department of Labor's claims-and-appeals publication describes the written ERISA appeal: at least 180 days to file, a new reviewer, and a decision clock that depends on urgent, pre-service, or post-service status. None of those pages treat a peer-to-peer call as exhaustion of those rights.
For the filing date on commercial and Marketplace notices, see how long you have to appeal a health insurance denial. If waiting for the standard clock would seriously jeopardize health or function, use how to request an expedited insurance appeal. For the packet after a refused authorization, see how to appeal a prior authorization denial. Do not wait for a rescheduled call if the written deadline is close.
Do not invent a federal peer-to-peer form. If the office cannot get a slot, file the internal appeal with the same clinical records. There is no official national success rate for these calls — do not rely on unsourced percentages when you decide whether to write.
What If I Have Medicare Instead?
Key Takeaway: Medicare Advantage and Part D plans may still use clinician-to-clinician discussions, but the appeal you file is the Medicare process on the notice. Original Medicare claim denials on a Medicare Summary Notice are redeterminations — not a commercial peer-to-peer letter.
Medicare.gov's claims and appeals hub states that you can file an appeal if you disagree with a coverage or payment decision by Original Medicare, a Medicare health plan, or a Medicare drug plan. Follow that notice. Do not paste ERISA peer-to-peer language onto a Medicare Summary Notice or a Part D coverage determination.
Frequently Asked Questions
What a peer-to-peer review is, who must be on the call, and why it does not replace a written internal appeal or Medicare notice.
Generate a Free Prior Authorization Appeal Draft
AppealFlow.net drafts a letter from the denial reason and facts you enter. Use it for the written internal appeal if the peer-to-peer call does not change the decision. Edit live, download as PDF or Word.
- 100% Free
- No Signup
- PDF & Word Export
Disclaimer: This article is for educational purposes only and does not constitute medical, legal, or financial advice. AppealFlow.net is not a healthcare provider, insurance broker, or law firm. Peer-to-peer windows and appeal clocks differ by plan and program — verify the denial notice, Healthcare.gov, the Department of Labor, or Medicare.gov before you file. For medical emergencies, call 911. See our full disclaimer.