Diagnosis coding corner: Introduce your staff to the new ICD-10-CM codes, tabular update for FY2026

Why This Topic Matters

ICD-10-CM annual updates can affect diagnosis selection, documentation review, and claims processing. This piece helps readers gauge the breadth of the FY2026 changes and identify which chapters and types of tabular revisions deserve attention during training.

Article Sections

1. Overview of the FY2026 update

   Introduces the annual ICD-10-CM diagnosis code update and its implementation timing. Summarizes the broad categories of changes included in the release.

2. Watch for deleted, revised codes

   Highlights the presence of deleted and revised diagnosis codes and notes that some existing entries are being replaced or expanded. Discusses the importance of reviewing these changes as part of staff training.

3. Tune into the tabular

   Focuses on tabular addenda and chapter-specific notes that affect how the update is read and applied. Mentions that the changes span most chapters and that guidelines updates are expected later.

4. June 24 update: Chapter change counts

   Presents the final chapter-level counts for new, revised, and invalidated codes. Notes where the largest concentrations of change occur and references the published totals.

5. FY2026 ICD-10-CM final change counts

   Shows a chapter-by-chapter summary table of the final FY2026 change counts. Serves as a reference for comparing the distribution of updates across the ICD-10-CM chapters.