CO-180Contractual ObligationEligibility
CO-180 Denial Code: Residency requirements not met
The patient doesn't meet the plan/program's residency requirement (state programs, regional plans).
Why CO-180 happens
- ●Patient moved out of the plan's service area
- ●State program billed for a non-resident
How to fix a CO-180 denial
- 1
Confirm current residency and correct program; route to the right state/plan
How to prevent it
Confirm address changes at check-in — they often signal coverage changes too.
Drowning in CO-180 denials?
OakClaim works every denial within 48 hours and builds prevention rules so they stop recurring.