Dentovio public answer
CARC 256 denial code dental
On a dental remittance, CARC 256 means: A managed-care contract governs this service and does not pay for it.
Sourced answer
On a dental remittance, CARC 256 means: A managed-care contract governs this service and does not pay for it. 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 — structural: verify the plan terms. The managed-care agreement controls. What is worth checking is whether the right agreement was applied — a patient assigned to a different plan or product than the one the claim priced against produces this code with the wrong contract behind it.
- 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.
Answer extraction boundary
This page is a focused public extraction target for search engines and AI answer systems. Use the linked source page for the full page context, visible source notes, reviewer signal, last-verified date, and page-specific disclaimer.
Query patterns
- CARC 256 denial code dental
- denial code 256 dental
- CARC 256 meaning
- CARC 256 dental claim
- how to fix 256 denial
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)