 
| ICD-10-CM-2023 > A00-B99 > A75-A79 > A77 | 
| A75-A79 | Rickettsioses | |
| A77 | Spotted fever [tick-borne rickettsioses] | |
| A77.0 | Spotted fever due to Rickettsia rickettsii | |
| Info: | Rocky Mountain spotted fever Sao Paulo fever | |
| A77.1 | Spotted fever due to Rickettsia conorii | |
| Info: | African tick typhus Boutonneuse fever India tick typhus Kenya tick typhus Marseilles fever Mediterranean tick fever | |
| A77.2 | Spotted fever due to Rickettsia siberica | |
| Info: | North Asian tick fever Siberian tick typhus | |
| A77.3 | Spotted fever due to Rickettsia australis | |
| Info: | Queensland tick typhus | |
| A77.4 | Ehrlichiosis | |
| Excl1.: | anaplasmosis [A. phagocytophilum] (A79.82) rickettsiosis due to Ehrlichia sennetsu (A79.81) | |
| A77.40 | Ehrlichiosis, unspecified | |
| A77.41 | Ehrlichiosis chafeensis [E. chafeensis] | |
| A77.49 | Other ehrlichiosis | |
| Info: | Ehrlichiosis due to E. ewingii Ehrlichiosis due to E. muris euclairensis | |
| A77.8 | Other spotted fevers | |
| Info: | Rickettsia 364D/R. philipii (Pacific Coast tick fever) Spotted fever due to Rickettsia africae (African tick bite fever) Spotted fever due to Rickettsia parkeri | |
| A77.9 | Spotted fever, unspecified | |
| Info: | Tick-borne typhus NOS | |
| ICD-10-CM-2023 Code Search Engine and PCS-2023 Code Search Engine |