Payer directory for US practices
The rules your billing team looks up most, for the payers US specialty practices bill most. Each one is taken from the payer's own documents, checked in October 2026.
What you get
- Payer IDs, filing limits and appeal deadlines
- A link to the payer's own document for each one
- An email when a payer changes a rule
US payers
Checked against each payer's own documents in October 2026.
- Medicare Part BFee-for-service MedicareID varies
- MedicaidState Medicaid programsID varies
- AetnaAetna commercial plansID 60054
- Cigna HealthcareCigna commercial plansID 62308
- UnitedHealthcareUnitedHealthcare commercial plansID 87726
- HumanaHumana Medicare Advantage plansID 61101
- Anthem Blue Cross Blue ShieldAnthem commercial plansID varies
- TRICARE EastTRICARE in the East Region, run by Humana MilitaryID 99727
Frequently asked questions
Some payers set filing limits and appeal deadlines in each practice's agreement, or by state, and publish no single national figure. Where that's the case, the entry says so rather than guessing.
Every entry was checked against the payer's own documents in October 2026. Payers change their rules, so follow the link beside each one before you rely on it.
Yes. Open any payer and enter your email, and we'll write when we see that payer change a rule listed here.
Something else? Ask us directly.