Transmittals

Health Insurance Portability and Accountability Act (HIPAA) Electronic Data Interchange Front-End Updates for April 2026

International Classification of Diseases, 10th Revision (ICD-10) and Other Coding Revisions to National Coverage Determinations (NCDs)-April 2026

April 2026 Bi-Annual Update of the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Remittance Advice Remark Code (RARC), Claims Adjustment Reason Code (CARC), Medicare Remit Easy Print (MREP) and PC Print Update

Calendar Year (CY) 2026 Annual Update for Clinical Laboratory Fee Schedule and Laboratory Services Subject to Reasonable Charge Payment

Calendar Year (CY) 2026 Home Infusion Therapy (HIT) Services Payment Rates and Instructions for Retrieving the January 2026 Home Infusion Therapy (HIT) Services Payment Rates Through the CMS Mainframe Telecommunications System

Reporting of All Recovery Auditor-Initiated Claim Adjustments and their Subsequent Adjustments for Periodic Interim Payment (PIP) Facilities

Implementation of the Award for the Jurisdiction F (J-F) Part A and Part B Medicare Administrative Contractor (JF A/B MAC)

Edit to Prevent Overpayment of Long-term Stay in Hospice

April 2026 Healthcare Common Procedure Coding System (HCPCS) Quarterly Update Reminder

Update to Claims Processing Instructions for National Coverage Determination (NCD) 20.4 Implantable Cardiac Defibrillators (ICDs)

Implement Operating Rules - Phase III Electronic Remittance Advice (ERA) Electronic Funds Transfer (EFT): Committee on Operating Rules for Information Exchange (CORE) 360 Uniform Use of Claim Adjustment Reason Codes (CARC), Remittance Advice Remark Codes (RARC) and Claim Adjustment Group Code (CAGC) Rule - Update from Council for Affordable Quality Healthcare (CAQH) CORE

Combined Common Edits/Enhancements Modules (CCEM) Code Set Update

Combined Common Edits/Enhancements Modules (CCEM) Code Set Update

Summary of Policies in the Calendar Year (CY) 2026 Medicare Physician Fee Schedule (MPFS) Final Rule, Telehealth Originating Site Facility Fee Payment Amount and Telehealth Services List, Computed Tomograph (CT) Modifier Reduction List, and Preventive Services List

National Correct Coding Initiative (NCCI) New/Updated Add-On Code (AOC) Edit File Format and Creation of an AOC File Retrieval Process in the Multi-Carrier System (MCS) – Implementation

Calendar Year (CY) 2026 Update to the Federally Qualified Health Center (FQHC) Prospective Payment System (PPS) and Payment Rates for Intensive Outpatient Program (IOP) Services for FQHCs

Calendar Year (CY) 2026 Update to Rural Health Clinic (RHC) All Inclusive Rate (AIR) Payment Limit for CY 2026 and Payment Rates for Intensive Outpatient Program (IOP) Services for RHCs

Update to Medicare Deductible, Coinsurance and Premium Rates for Calendar Year (CY) 2026

Manual Updates Adding Language to the Timing and Content of Certification and Revocation and Discharge Guidance