Most peer-to-peer reviews are won or lost in the first two minutes. The physician who says "I just think this test is important for my patient" will lose. The physician who opens with the specific NCCN category, the patient's staging, and the treatment decision the result informs will usually win.
Disclaimer: This is educational, not billing, legal, or medical advice. Payer policies change frequently and your situation may differ from the examples here. Always verify current requirements with your payer's most recent published policy and consult qualified billing or compliance professionals. Use this information at your own risk.
Request It Immediately — the Window Closes Fast
When a prior authorization comes back denied for medical necessity, the peer-to-peer request needs to happen within 48 hours. Most commercial payers allow 5–14 business days from the denial date, but you want to move immediately for two reasons.
First, you need time to prepare. A peer-to-peer that happens 3 days after denial with 24 hours of prep beats one that happens 12 days later after everyone has moved on.
Second, the reviewer who made the initial denial is often still active on the case. A timely peer-to-peer catches them before the case is archived.
Request peer-to-peer through the payer's portal (Availity, Cigna for HCP, UHC Provider Portal) or by calling the PA line and asking specifically. Ask for a physician-to-physician review — not a nurse review, not an administrative callback. Some payers will default to a nurse reviewer if you don't ask specifically for a physician. Nurse reviewers can gather information but can't reverse a denial.
What the Ordering Physician Needs to Know Going In
The clinical prep should be brief, specific, and structured around the payer's denial reason.
Pull the payer's medical policy for the service before the call. Find the coverage criteria section. The physician should be prepared to walk through each criterion and confirm the patient meets it.
If you can get the specific reviewer's name from the denial letter or from the PA department, look them up. Knowing whether they're a medical oncologist, internist, or radiologist can help you tailor the clinical argument — an oncologist reviewing a CGP panel request will respond differently to an NCCN-based argument than an internal medicine physician who may need more context on why tumor profiling changes management.
The physician should have at hand during the call:
- Patient DOB, member ID, and the denial reference number
- Diagnosis (cancer type, stage, AJCC or clinical staging) and date of diagnosis
- Prior treatment history with dates and outcomes
- The specific clinical question the test will answer
- The NCCN guideline section (category, indication, panel type)
- Any companion diagnostic or FDA-approved therapy context
How to Structure the Opening Statement
Don't wait for the reviewer to lead. Open the call by establishing clinical credibility and clarity:
"This is Dr. [Name], treating oncologist for [patient initials, DOB]. I'm calling about the denial for [test/CPT code], case number [X]. My patient has [specific cancer type, stage] diagnosed [date], with [prior treatments and outcomes]. I'm requesting this [test] because [specific clinical decision it will inform — e.g., selection of a VEGFR-targeted therapy, determination of BRCA somatic status for PARP inhibitor eligibility]. This indication is covered under [payer]'s policy and supported by NCCN Category [X] for [tumor type]."
That's your whole opening. Twenty seconds. The reviewer now knows this isn't a fishing expedition.
Handle the Common Pushbacks
"This test is investigational for this indication." Ask them to cite the specific policy language. If the test has NCCN Category 1 or 2A designation and the indication is in the policy's covered list, push back. "NCCN Category 2A reflects uniform consensus based on lower-level evidence — that's their threshold for clinical appropriateness. Can you walk me through which specific criterion isn't met?"
"The patient should try a different test first." Ask what alternative they have in mind and why. If they're proposing an alternative that doesn't answer the same clinical question (e.g., a single-gene BRCA test instead of a panel when multiple genes are clinically relevant), explain specifically why the alternative is clinically insufficient.
"We need additional documentation." Ask exactly what documentation is needed and the deadline to provide it. Get the name and direct fax number of the reviewer. Don't leave the call with a vague promise of "we'll let you know" — confirm in writing what you're sending and when.
After the Call
Document everything: date and time, reviewer's name and credential, payer reference number, what was discussed, and the outcome. If the denial is reversed on the call, ask when you'll receive written confirmation and the PA number. Don't bill without written confirmation.
If the call doesn't reverse the denial, you now have critical information for your written appeal: the specific objection the reviewer raised and the policy language they cited. Your appeal addresses exactly that. You also now have documentation that you completed a peer-to-peer before escalating, which is required by some payers before you can access external review.
For Humana and Anthem Medicare Advantage denials, peer-to-peer completion is specifically documented in the administrative record for the case and referenced at the appeal stage. Keep records.
If the Physician Won't Participate
Some ordering physicians don't want to do peer-to-peer calls. That's a real operational constraint.
Your options: ask a physician on your staff (a medical director or CMO at a lab, for example) to conduct the peer-to-peer on behalf of the practice with the ordering physician's documentation. Some payers allow this; others require it to be the ordering provider. Know your payer's rule before you schedule the call.
If peer-to-peer truly isn't feasible, go straight to a detailed written appeal with a physician-authored letter of medical necessity. It's lower yield than a live call, but it's not nothing.
Sources
- 45 CFR §147.136 (internal claims and appeals — ACA-compliant plans)
- 42 CFR §422.578 (Medicare Advantage coverage determination and appeals)
- NCCN Clinical Practice Guidelines (NCCN.org) — category designations by indication
- ACA §2719 (independent external review requirements)
- 29 USC §1133 (ERISA full and fair review)