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DSS Important Message - Diagnosis Code Requirements for Dental Claims pdf
Connecticut Medicaid (HUSKY Health)·CT · Dentistry·Provider Bulletin
Effective date
Sep 1, 2021
We identified it
Jun 20, 2026
Summary
Department of Social Services (DSS) now requires ICD-10 diagnosis codes on all dental claims with dates of service September 1, 2021 and forward. Currently, missing diagnosis codes result in EOB code 258 but claims still pay; however, DSS will make diagnosis codes mandatory in the future, at which point missing codes will cause claim denials.
Action Required
Immediately: Dental billing team must update web claim submission process to include ICD-10 diagnosis codes in the Principal diagnosis field for all dental claims. Enter diagnosis codes without punctuation marks. Update billing software to prompt for primary diagnosis code entry. Prepare for future mandatory requirement when DSS announces - at that time, claims without primary diagnosis codes will be denied with EOB code 258.