Revised FY 2027 ICD-10-CM Diagnosis Codes ICD-10-CM
The FY 2027 ICD-10-CM update revises 4 diagnosis codes, effective October 1, 2026. Skin & subcutaneous tissue (L00–L99) leads with 3 of them. Every revised code is listed below by chapter, with a filter to find the ones that matter to you.
Chapters with no revised codes in this release are omitted. Counts from the official FY 2027 release files.
Diseases of the skin and subcutaneous tissue (L00–L99) 3 revised
Factors influencing health status and contact with health services (Z00–Z99) 1 revised
| Code | Description |
|---|---|
| Z29.14 | Encounter for prophylactic rabies immune globulin |
FY 2027 Revised Codes FAQ
How many ICD-10-CM codes were revised for FY 2027?
The FY 2027 release revises the descriptions of 4 diagnosis codes across 2 chapters, with most revisions in Diseases of the skin and subcutaneous tissue (L00–L99) (3 codes).
What changes when a code is revised?
Only the official description changes. The code itself stays valid and billable, so no remapping is needed, but encounter forms, cheat sheets, and EHR favorites should show the updated wording to avoid documentation mismatches.
When do the FY 2027 codes take effect?
The FY 2027 code set applies to dates of service from October 1, 2026 to September 30, 2027. ICD-10-CM follows the federal fiscal year, so the update takes effect on October 1, not January 1.
Related References
Source: official FY 2027 ICD-10-CM release files published by CMS and the National Center for Health Statistics (NCHS), effective October 1, 2026 – September 30, 2027.
