CO-102Contractual ObligationPayment Adjustment
CO-102 Denial Code: Major medical adjustment
Legacy adjustment moving the claim between basic and major-medical benefit layers of older plan designs.
Why CO-102 happens
- ●Plan design splits benefits into basic and major medical components
How to fix a CO-102 denial
- 1
Verify the combined payment across layers matches the allowable
How to prevent it
Informational — reconcile the full remit before assuming underpayment.
Drowning in CO-102 denials?
OakClaim works every denial within 48 hours and builds prevention rules so they stop recurring.