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Payer playbook · National

Medicare Advantage (umbrella)

Medicare Advantage Organization (umbrella playbook for MA-PD and MA-only plans not specifically encoded by carrier)

01

Where to send the appeal

Verified addresses and inbound channels. We refresh on every release.

Fax
+1-XXX-XXX-XXXX
Provider portal
https://www.cms.gov/medicare/appeals-grievances/managed-careview-only
Mailing address
Submit appeals to the specific Medicare Advantage Organization's Provider Appeals address as printed on the Remittance Advice / EOB. The federal MA appeal pathway is uniform; the carrier-specific contact point is not — always verify against the EOB before submission.
02

Response timeline

The clocks that matter. Miss them and you escalate to the state insurance commissioner.

First-level response
60 days
Second-level response
60 days
Provider appeal window
60 days
Expedited pathway
72 hours
03

Codes worth fighting

Based on outcome data across our payer corpus.

Known win codes
  • CO-97
  • CO-4
  • CO-167
  • CO-204
  • CO-18
  • PR-2
Known difficult codes
  • CO-50
  • CO-29
  • PR-1
  • CO-109
04

Modifier behavior

The denials this payer applies on modifier-bearing claims. The rebuttal language is part of the Denial OS letter generator and not published here.

Modifier GA / GZ / GY

Advance Beneficiary Notice (ABN) and statutory exclusion modifiers

Common in Medicare Advantage when ABN was missing, expired, or improperly executed. GZ (no ABN, expected denial) often results in non-recoverable denials.

Recommended rebuttal language is part of the Denial OS letter engine — start a free appeal to see it in context.

Modifier 59

Distinct Procedural Service

MA plans apply CMS-aligned NCCI edits; modifier 59 denials usually signal documentation gaps. CMS NCCI policy is the controlling authority across all MA plans.

Recommended rebuttal language is part of the Denial OS letter engine — start a free appeal to see it in context.

Modifier 25

Significant, Separately Identifiable E/M Service

MA plans apply CMS Internet-Only Manual (IOM) Pub. 100-04 Chapter 12 §30.6 standards on E/M services bundled with same-day procedures.

Recommended rebuttal language is part of the Denial OS letter engine — start a free appeal to see it in context.
05

Interest statute

The legal basis for charging interest when payment runs late.

Medicare Advantage prompt payment 42 CFR 422.520(a) (95% of clean claims paid within 30 days, 100% within 60 days, interest at the Medicare prompt-pay rate on late clean claims) / 5-level federal appeal pathway 42 CFR §§422.578-622 (MA plan reconsideration → IRE → ALJ → Medicare Appeals Council → Federal District Court)

You have the playbook. Now write the letter.

Paste your EOB and Denial OS generates the appeal in five minutes — citing the contracted rate, the modifier rebuttal, and the deadline statute that matches this exact payer.

Start your appeal