CO-5 Denial Code Explained

CO-5 is a medical billing denial code that indicates the procedure code submitted on the claim is inconsistent with the place of service. This denial commonly occurs when the billed procedure does not match the reported treatment location.

What Does CO-5 Mean?

The CO-5 denial code means the insurance payer identified a mismatch between the procedure performed and the place of service listed on the claim.

This denial is often related to coding errors, incorrect facility information, or billing inconsistencies.

Common Reasons for CO-5

• Incorrect place of service code

• Procedure not allowed at reported location

• Billing office versus facility confusion

• Coding inconsistencies

• Invalid claim submission details

• Incorrect provider billing setup

How To Fix CO-5

Review the claim and verify the correct place of service code was used. Confirm the procedure is eligible for reimbursement in the reported setting and update any incorrect billing information before resubmitting the claim.

Supporting documentation may be required in certain cases.

Related Denial Codes

You may also encounter:

• CO-4 — Procedure inconsistent with modifier

• CO-11 — Diagnosis inconsistent with procedure

• CO-16 — Missing or incomplete claim information

• CO-97 — Bundled procedure denial

Quick Summary

CO-5 indicates the billed procedure is inconsistent with the reported place of service. Most denials are related to coding or billing information errors.