Check the FY2026 ICD-10-CM tabular addenda for changes to existing codes

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Note:  The following article synopsis was NOT provided by HCPro. It was created by Find-A-Code/innoviHealth.

Article Overview

This article helps coding professionals, auditors, and trainers understand what to look for in the FY2026 ICD-10-CM tabular addenda beyond newly added diagnosis codes. It focuses on updates to existing tabular entries, note changes, inclusion terms, chapter-level revisions, and a practical way to search the CMS addenda PDF for specific types of updates.

Why This Topic Matters

Tabular addenda changes can affect how established diagnosis codes are reported and interpreted throughout the year. Reviewing these updates helps teams stay aligned with current ICD-10-CM guidance and avoid missing newly added notes or revised tabular instructions.

Article Sections

  1. Overview of FY2026 tabular addenda review

    Introduces the purpose of checking the FY2026 ICD-10-CM tabular addenda and the types of updates that can affect existing diagnosis codes.

  2. Check chapters that weren’t updated

    Discusses chapter-level review priorities and summarizes selected note changes and inclusion term updates in the respiratory and digestive system chapters.

  3. Watch for new Excludes1 notes

    Describes the presence of new Excludes1 notes across the updated tabular and highlights several affected code groups and chapters.

  4. DIY: How to search the tabular addenda

    Explains a practical method for navigating the addenda PDF using bookmarks and search terms to find different categories of changes.

  5. Resource

    Points to the referenced CMS addenda file for further review.

What You Will Learn

  • How the FY2026 ICD-10-CM tabular addenda can affect existing diagnosis codes
  • Which kinds of tabular note updates are highlighted in the article
  • How chapter-by-chapter review can help identify inclusion term changes
  • How to navigate the addenda PDF using bookmarks and targeted searches

Who Should Read This

  • Medical coders
  • Coding auditors
  • Coding managers
  • Clinical documentation improvement specialists
  • Coding educators and trainers

Codes Discussed

Code Ranges Discussed

  • ICD-10-CM: J00-J99
  • ICD-10-CM: K00-K95
  • ICD-10-CM: J41.-
  • ICD-10-CM: I13.-
  • ICD-10-CM: T81.12-
  • ICD-10-CM: O9A.2-
  • ICD-10-CM: D56.-
  • ICD-10-CM: R40.21.-
  • ICD-10-CM: R40.22.-
  • ICD-10-CM: R40.23.-
  • ICD-10-CM: R40.24.-

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