ICD-10-CM Alphabetic Index · FY 2026 8 Entries

Rickettsiosis in the ICD-10-CM Index ICD-10-CM

The main term Rickettsiosis carries 8 index entries pointing to 5 ICD-10-CM codes. The default entry is A79.9, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.

✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
8
Index Entries
5
Codes Referenced
A79.9
Default Code
R
Letter
8 of 8 shown
ICD-10-CM

Index Entries Under Rickettsiosis 8 entries · 5 codes

Rickettsiosis A79.9
due to
Ehrlichia sennetsu A79.81
Neorickettsia sennetsu A79.81
Rickettsia akari (rickettsialpox) A79.1
specified type NEC A79.89
tick-borne A77.9
vesicular A79.1

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Related Index Terms

All index terms starting with RIndex to Diseases and InjuriesICD-10-CM Code Lookup

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.