Effective date
Medicare changes effective October 5, 2026
34 CMS and MAC policy updates take effect on this date. Every entry links to the government document it came from.
CMS Transmittal · 34
- CMS Transmittal R13785FM: The Fiscal Intermediary Shared System (FISS) Submission of Copybook Files to the Provider…
CMS-T-R13785FMNationalMulti-specialtysource ↗
- CMS Transmittal R13833MSP: Creating Additional Medicare Secondary Payer (MSP) Error Codes to Better Identify Incoming MSP…
CMS-T-R13833MSPNationalMulti-specialtysource ↗
- CMS Transmittal R13798OTN: Send 'Reason for Denial' Value in Prior Authorization Data to the Integrated Data Repository (…
CMS-T-R13798OTNNationalMulti-specialtysource ↗
- CMS Transmittal R13783MSP: Creating Additional Medicare Secondary Payer (MSP) Error Codes to Better Identify Incoming MSP…
CMS-T-R13783MSPNationalMulti-specialtysource ↗
- CMS Transmittal R13873OTN: Implementation of VMS Application Programming Interfaces (APIs) to Support the Durable Medical…
CMS-T-R13873OTNNationalDMEsource ↗
- CMS Transmittal R13867CP: File Conversions Related to the Spanish Translation of the Healthcare Common Procedure Coding…
CMS-T-R13867CPNationalMulti-specialtysource ↗
- CMS Transmittal R13943CP: October 2026 Quarterly Update to Healthcare Common Procedure Coding System (HCPCS) Codes Used…
CMS-T-R13943CPNationalMulti-specialtysource ↗
- CMS Transmittal R13792CP: October 2026 (2027 File) Update of the International Classification of Diseases, Tenth Revision…
CMS-T-R13792CPNationalMulti-specialtysource ↗
- CMS Transmittal R13765FM: New Physician Specialty Code for Physician Nutrition Specialist (F7)
CMS-T-R13765FMNationalMulti-specialtysource ↗
- CMS Transmittal R13842CP: Quarterly Update for the Durable Medical Equipment, Prosthetics, Orthotics, and Supplies (DMEPOS…
CMS-T-R13842CPNationalMulti-specialtysource ↗
- CMS Transmittal R13831CP: October 2026 Quarterly Average Sales Price (ASP) Medicare Part B Drug Pricing Files and…
CMS-T-R13831CPNationalMulti-specialtysource ↗
- CMS Transmittal R13829CP: Quarterly Update to the National Correct Coding Initiative (NCCI) Procedure-to-Procedure (PTP)…
CMS-T-R13829CPNationalMulti-specialtysource ↗
- CMS Transmittal R13793CP: Quarterly Update to Home Health (HH) Grouper
CMS-T-R13793CPNationalHome Healthsource ↗
- CMS Transmittal R13830CP: File Conversions Related to the Spanish Translation of the Healthcare Common Procedure Coding…
CMS-T-R13830CPNationalMulti-specialtysource ↗
- CMS Transmittal R13813CP: Fiscal Year (FY) 2027 Annual Update to the Medicare Code Editor (MCE) and International…
CMS-T-R13813CPNationalInpatient (IPPS)source ↗
- CMS Transmittal R13849CP: Changes to the Laboratory National Coverage Determination (NCD) Edit Software for October 2026…
CMS-T-R13849CPNationalClinical Laboratorysource ↗
- CMS Transmittal R13794CP: Quarterly Update of Healthcare Common Procedure Coding System (HCPCS) Codes Used for Home Health…
CMS-T-R13794CPNationalHome Healthsource ↗
- CMS Transmittal R13934OTN: Health Insurance Portability and Accountability Act (HIPAA) Electronic Data Interchange(EDI)…
CMS-T-R13934OTNNationalMulti-specialtysource ↗
- CMS Transmittal R13803CP: Rural Health Clinics (RHCs) and Federally Qualified Health Centers (FQHCs) Updates for Shared…
CMS-T-R13803CPNationalMulti-specialtysource ↗
- CMS Transmittal R13765CP: The purpose of this Change Request (CR) is to establish a new physician code for Physician…
CMS-T-R13765CPNationalMulti-specialtysource ↗
- CMS Transmittal R13816OTN: Health Insurance Portability and Accountability Act (HIPAA) Electronic Data Interchange(EDI…
CMS-T-R13816OTNNationalMulti-specialtysource ↗
- CMS Transmittal R13784CP: October 2026 Healthcare Common Procedure Coding System (HCPCS) Quarterly Update Reminder
CMS-T-R13784CPNationalMulti-specialtysource ↗
- CMS Transmittal R13865OTN: Health Insurance Portability and Accountability Act (HIPAA) Electronic Data Interchange(EDI…
CMS-T-R13865OTNNationalMulti-specialtysource ↗
- CMS Transmittal R13924CP: Update to Hospice Payment Rates, Hospice Cap, Hospice Wage Index and Hospice Pricer for Fiscal…
CMS-T-R13924CPNationalHospicesource ↗
- CMS Transmittal R13888OTN: Send 'Reason for Denial' Value in Prior Authorization Data to the Integrated Data Repository…
CMS-T-R13888OTNNationalMulti-specialtysource ↗
- CMS Transmittal R13910OTN: International Classification of Diseases, 10th Revision (ICD-10) and Other Coding Revisions to…
CMS-T-R13910OTNNationalMulti-specialtysource ↗
- CMS Transmittal R13945MPI: Updates to Chapter 3, Chapter 4, and Chapter 5 in Publication (Pub.) 100-15, Including Updates…
CMS-T-R13945MPINationalMedicaidsource ↗
- CMS Transmittal R13872CP: Update to Hospice Payment Rates, Hospice Cap, Hospice Wage Index and Hospice Pricer for Fiscal…
CMS-T-R13872CPNationalHospicesource ↗
- CMS Transmittal R13881CP: October 2026 Quarterly Update to Healthcare Common Procedure Coding System (HCPCS) Codes Used…
CMS-T-R13881CPNationalMulti-specialtysource ↗
- CMS Transmittal R13884CP: October 2026 Quarterly Update to the Clinical Laboratory Fee Schedule (CLFS) and Clinical…
CMS-T-R13884CPNationalClinical Laboratorysource ↗
- CMS Transmittal R13929CP: Quarterly Update to the Medicare Physician Fee Schedule Database (MPFSDB) - October 2026 Update…
CMS-T-R13929CPNationalPhysician Fee Schedulesource ↗
- CMS Transmittal R13812CP: Fiscal Year (FY) 2027 Updates for Medicare Severity Diagnosis Related Groups (MS-DRG) Subject to…
CMS-T-R13812CPNationalInpatient (IPPS)source ↗
- CMS Transmittal R13850CP: Medicare Part A Skilled Nursing Facility (SNF) Prospective Payment System (PPS) Web Pricer…
CMS-T-R13850CPNationalSkilled Nursing Facilitysource ↗
- CMS Transmittal R13851CP: Inpatient Rehabilitation Facility (IRF) Annual Update: Prospective Payment System (PPS) Web…
CMS-T-R13851CPNationalInpatient (IPPS)source ↗