CO-302Contractual ObligationAuthorization
CO-302 Denial Code: Authorization time limit expired
The precertification/authorization expired before the service happened — auths have validity windows, and this service fell outside it.
Why CO-302 happens
- ●Procedure rescheduled past the auth's end date
- ●Auth window shorter than the care timeline
How to fix a CO-302 denial
- 1
Request a new/extended auth; appeal with rescheduling documentation where delay was payer- or clinically-driven
How to prevent it
Track auth expiration dates against scheduling — re-auth before rebooking past the window.
Drowning in CO-302 denials?
OakClaim works every denial within 48 hours and builds prevention rules so they stop recurring.