Initial claims
365 days
from the date of service for CMS-1500 claims; the clock runs from discharge/date of service for UB-04, the primary payer's EOB for COB claims, eligibility posting for retroactive eligibility, and the denial date for resubmissions (Payment Policy 52, effective 2/23/2026) — “unless otherwise specified in a provider's contract,” and on conflict the contract language prevails
Published openly