ICD-10-CM Alphabetic Index · FY 2026 Letter A

Index Terms Starting With A ICD-10-CM

The letter A section of the FY 2026 Alphabetic Index carries 715 main terms, from Aarskog's syndrome to Azygos. Terms with a direct code link straight to the code page, cross references point to the main term that holds the codes, and terms with a handful of sub-entries render in full right here. The largest terms open their own full index page.

✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
715
Main Terms
8,770
Index Entries
306
Direct Codes
149
Cross-refs
ABCDEFGHIJKLMNOPQRSTUVWXYZ
715 of 715 shown

Related References

Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.