CO-304Contractual ObligationPlan Routing
CO-304 Denial Code: Medical plan received it — belongs to hearing plan
Submit these services to the patient's hearing plan — hearing benefits are carved out.
Why CO-304 happens
- ●Hearing services billed to medical with a hearing carve-out
How to fix a CO-304 denial
- 1
Rebill the hearing-benefit administrator
How to prevent it
Verify hearing carve-outs before billing audiology services.
Drowning in CO-304 denials?
OakClaim works every denial within 48 hours and builds prevention rules so they stop recurring.