CO-5 — Procedure inconsistent with place of service
Claim-adjustment reason code 5 · typically reported as CO-5
What it means
The item/service can’t be billed for the place-of-service code on the claim.
Why DME claims hit it
- DME billed with POS other than home (12) when the benefit requires home use
- Items delivered to a skilled nursing facility during a covered Part A stay (SNF consolidated billing)
How to fix it
- Confirm where the patient actually resided on the date of service
- If the patient was in a facility, determine whether the facility is responsible under consolidated billing
Appeal posture
Appeal only with proof the POS was coded wrong; otherwise rebill the correct responsible party.
Related denial codes
CO-58 — Treatment location inappropriate for the serviceCO-109 — Wrong payer / contractor for this claim
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