CO-191
What This Code Means
Not a work related injury/illness and thus not the liability of the workers’ compensation carrier. This code was deactivated by X12 (as of 07/01/2014). See: P2.
How to Resolve or Appeal
- This is a historical/deactivated code — no longer used on current claims. If seen on an old remittance, refer to the replacement code noted above where available.
More Denial Codes to Check
Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.