236: This procedure or procedure/modifier combination is not compatible with another procedure or procedure/modifier combination provided on the same day according to the National Correct Coding Initiative or workers compensation state regulations/fee schedule requirements.

Why it fires

• The two procedures form an NCCI Procedure-to-Procedure edit pair
• No valid NCCI-associated modifier, such as 59 or XE/XS/XP/XU, was appended to indicate the services were truly separate and distinct
• A state workers' compensation fee schedule has its own bundling rule that applies

Corrective actions, ranked

1. 1

   Check the NCCI PTP edit table

   Confirm whether this code pair has a modifier indicator of 0 (never separately payable) or 1 (modifier allowed).

2. 2

   Append the correct modifier if supported

   If the indicator is 1 and documentation shows the services were distinct in site, session, or encounter, add the appropriate modifier and resubmit.

3. 3

   Accept the bundle if the indicator is 0

   If the edit does not allow a modifier override, this is correctly bundled and should be written off.

Is it worth appealing

Appeal with documentation only when the NCCI modifier indicator allows an override and the medical record clearly supports the services were separate and distinct.