CO-58Contractual ObligationMedical Necessity
CO-58 Denial Code: Treatment rendered in inappropriate/invalid place of service
Treatment was deemed by the payer to have been rendered in an inappropriate or invalid place of service.
Why CO-58 happens
- ●Procedure payer expects in ASC/outpatient done in office (or vice versa)
- ●POS code doesn't match payer site-of-care policy
How to fix a CO-58 denial
- 1
Verify the payer's site-of-care policy for the CPT
- 2
Correct POS errors, or appeal with medical justification for the setting
How to prevent it
Check site-of-care rules during prior auth.
Drowning in CO-58 denials?
OakClaim works every denial within 48 hours and builds prevention rules so they stop recurring.