A77.8 Other spotted fevers

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Rickettsia 364D/R. philipii (Pacific Coast tick fever)
• Spotted fever due to Rickettsia africae (African tick bite fever)
• Spotted fever due to Rickettsia parkeri

MS-DRG index

Defines the logic of DRG(s) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 082.8 Other specified tick-borne rickettsioses (approximate)

Diagnosis Index entries for A77.8

• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › African tick bite
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › pacific coast tick
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › spotted › due to Rickettsia › africae (African tick bite fever)
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › spotted › due to Rickettsia › parkeri
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › spotted › due to Rickettsia › specified type NEC
• Rickettsia 364D/R. philipii (Pacific Coast tick fever)

Nearby codes

• A77.3 Spotted fever due to Rickettsia australis
• A77.4 Ehrlichiosis
• A77.40 Ehrlichiosis, unspecified
• A77.41 Ehrlichiosis chaffeensis [E. chaffeensis]
• A77.49 Other ehrlichiosis
• A77.8 Other spotted fevers (this code)
• A77.9 Spotted fever, unspecified