Dentovio public answer
CARC 236 denial code dental
On a dental remittance, CARC 236 means: Two lines on the same date clash under a bundling edit, so the payer refused one of them.
Sourced answer
On a dental remittance, CARC 236 means: Two lines on the same date clash under a bundling edit, so the payer refused one of them. Two rule sets can drive it: the federal correct-coding edits, or a state's workers'-compensation fee rules. X12 assigns it no group code, so the group code on the remittance is the payer's choice under its own contract and it, not the CARC, decides who is assigned the balance. No source read for this page pairs a specific remark code with it. Dentovio's appealability verdict — depends: check the facts first. Establish which rule fired before responding. Medicare's contractor guidance is blunt that a modifier must never be appended solely to bypass an NCCI edit, and where the edit permits no bypass the only correct fix is removing the code that should not have been billed. Where the services genuinely were distinct and the edit allows it, the response is documentation of the separation.
- Cluster
- Practice operations
- Last verified
- 2026-08-30
- Reviewer
- None — owner-published
Dentovio is an independent publisher — not a payer, the ADA, X12, CAQH CORE, or any government agency. Code meanings and remark-code meanings on this page are Dentovio's own wording, written from the official X12 Claim Adjustment Reason Code and Remittance Advice Remark Code lists and linked back to them; X12 holds the copyright in those lists and its descriptions are not reproduced here. CDT codes are referenced by number only; CDT is the American Dental Association's copyrighted code set and this page does not reproduce ADA descriptors. Appealability verdicts are Dentovio editorial classification, not a standard. Every fact traces to the code steward's registry, a federal rule or manual, a HIPAA operating rule, an association publication, or a named payer's own document — never to a billing blog. This page was drafted with AI assistance and verified against the primary sources linked here. It has not been reviewed by a credentialed dental billing specialist, attorney, or clinician. Educational billing reference only — not billing, legal, or clinical advice. Plan contracts control individual outcomes, and processing policies usually live in the payer's provider manual rather than in the signed agreement.
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Source citations
- X12-CARC X12 Claim Adjustment Reason Codes (official list) (x12.org)
- ECFR-ERISA-CLAIMS 29 CFR 2560.503-1 — ERISA claims procedure (ecfr.gov)
- ECFR-MEDICAID-APPEALS 42 CFR 438.402 — Medicaid managed-care appeal framework (ecfr.gov)
- ECFR-MEDICAID-TIMING 42 CFR 438.408 — Medicaid managed-care appeal timing (ecfr.gov)
- DENIAL-EVIDENCE-236-1 CMS — Medicare National Correct Coding Initiative (NCCI) edits (cms.gov)
- DENIAL-EVIDENCE-236-2 First Coast Service Options (A/B MAC, FL/PR/USVI) — tips to prevent CARC CO 236 (2026-08-25) (medicare.fcso.com)