MedicaidBilling CodesHigh impact
2027 ICD10-CM/PCS Revisions Effective 10/1/2026
Arkansas Medicaid·AR·Coding
Effective date
Oct 1, 2026
We identified it
Oct 1, 2026
Summary
Arkansas Medicaid is implementing the 2027 ICD-10-CM/PCS code revisions effective October 1, 2026. Providers must use updated diagnosis and procedure codes on all claims with dates of service on or after this date. This is an annual coding standard update required by the Centers for Medicare & Medicaid Services.
Action Required
By September 30, 2026: Billing team must update all billing software, encoder systems, and validation tables to incorporate 2027 ICD-10-CM/PCS code revisions. Coordinate with providers and clinical staff to ensure awareness of new/revised codes applicable to your practice specialties. Test billing workflows to verify system accepts updated codes. Any claims submitted on or after October 1, 2026 must use the 2027 code set or will be rejected by Arkansas Medicaid. Contact Provider Assistance Center at (800) 457-4454 or (501) 376-2211 with implementation questions.