CARC 236 Active

PR-236: Procedure/Modifier Not Compatible per NCCI

TL;DR

Patient charges for a coding edit are unusual. Correct the modifier and request reprocessing.

Action
Review & Decide
Who Pays
Patient
Appeal
No
Patient Impact
Direct Financial
Disclaimer
This content is for informational purposes only and does not constitute professional billing advice. Always verify information against your payer contracts and current coding guidelines. Consult a certified billing specialist for specific claim issues.

What Does PR-236 Mean?

With PR, the patient was charged due to a coding incompatibility. This is unusual. Correct the modifier and resubmit.

CARC 236 indicates that the modifier used with the procedure code is not recognized as valid by the NCCI Procedure-to-Procedure (PTP) edits. This differs from CARC 182 (modifier invalid on date of service) — CARC 236 specifically refers to NCCI compatibility rules between procedure codes and modifiers, not the modifier's validity dates.

The NCCI edits define which modifiers can be used with specific procedure code pairs to indicate separate and distinct services. Using an inappropriate modifier to bypass a bundling edit or applying a modifier that does not apply to the code pair will trigger this denial.

How to Resolve

  1. Correct the modifier Apply the appropriate modifier.
  2. Request reprocessing Resubmit and request patient charges be reversed.
Do Not Appeal This Code

Procedure/Modifier Not Compatible per NCCI points to a coding or claim-information issue — typically resolvable by correcting the claim and resubmitting rather than appealing. Identify the specific coding or data problem (review accompanying RARC codes for detail), then submit a corrected claim. Appeals are only the right action if the original coding was correct and the payer applied the edit in error.

How to Prevent PR-236

Also Filed As

The same CARC 236 may appear with different Group Codes:

CO-236 OA-236

Related Denial Codes

PR-4 — Procedure Code Inconsistent with Modifier PR-5 — Procedure Code Inconsistent with Place of Service PR-6 — Procedure/Revenue Code Inconsistent with Patient Age PR-7 — Procedure/Revenue Code Inconsistent with Patient Gender PR-8 — Procedure Code Inconsistent with Provider Type/Specialty

Sources

  1. https://x12.org/codes/claim-adjustment-reason-codes
  2. https://imedclaims.com/co-236-denial-code/
  3. https://med.noridianmedicare.com/web/jfb/topics/claim-submission/reason-code-guidance/not-separately-payable-national-correct-coding-initiative
  4. Codes maintained by X12. Visit x12.org for official definitions.