CO-182: Procedure modifier was invalid on the date of service.

Why it fires

• The modifier had been retired or had not yet been introduced as of the date of service
• The modifier was mistyped or transposed into an invalid value

Corrective actions, ranked

1. 1

   Check modifier effective dates

   Confirm the modifier was active for that specific date of service.

2. 2

   Correct the modifier

   Replace with the valid, equivalent modifier for that period and resubmit.

3. 3

   Update your coding reference tables

   Refresh the modifier list your billing system uses each year.

Is it worth appealing

Not an appeal. Correct the modifier and resubmit rather than appealing.

Other denial codes to check

Codes that share a remark code with this one, or that are reported under the same group code.

• CO-45Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.
• CO-97The benefit for this service is included in the payment/allowance for another service/procedure that has already been adjudicated.
• CO-16Claim/service lacks information or has submission/billing error(s).
• CO-11The diagnosis is inconsistent with the procedure.
• OA-18Exact duplicate claim/service (Use only with Group Code OA except where state workers' compensation regulations requires CO)
• CO-29The time limit for filing has expired.

See every CARC in the dataset