Dentovio public answer
CARC 204 denial code dental
On a dental remittance, CARC 204 means: The patient's current benefits package omits this category of service, equipment, or drug.
Sourced answer
On a dental remittance, CARC 204 means: The patient's current benefits package omits this category of service, equipment, or drug. 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. A genuine plan-design exclusion is not changed by argument. Verify the right plan was adjudicated — employer plan changes mid-year cause false 204s — and establish whether the exclusion's factual predicate holds before treating the decision as final. Prevention is verification: benefit category checks before high-cost treatment plans.
- 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-204-1 National Association of Dental Plans — NADP Solves Industry Issue by Gaining CMS Approval of New RARC (nadp.org)
- DENIAL-EVIDENCE-204-2 X12 Remittance Advice Remark Codes (external code list 411) (x12.org)