A77.1 Spotted fever due to Rickettsia conorii

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

Applicable to

• African tick typhus
• Boutonneuse fever
• India tick typhus
• Kenya tick typhus
• Marseilles fever
• Mediterranean tick fever

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 082.1 Boutonneuse fever

Diagnosis Index entries for A77.1

• Disease, diseased › Conor and Bruch's (boutonneuse fever)
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › boutonneuse
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › Kenya (tick)
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › Marseilles
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › Mediterranean › tick
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › spotted › due to Rickettsia › conorii
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › tick › Mediterranean
• Infection, infected, infective (opportunistic) › typhus › tick-borne › African
• Kenya fever
• Marseilles fever
• Mediterranean › fever › tick
• Mediterranean › tick fever
• Typhus (fever) › African tick
• Typhus (fever) › India tick
• Typhus (fever) › Kenya (tick)

Nearby codes

• A77 Spotted fever [tick-borne rickettsioses]
• A77.0 Spotted fever due to Rickettsia rickettsii
• A77.1 Spotted fever due to Rickettsia conorii (this code)
• A77.2 Spotted fever due to Rickettsia siberica
• A77.3 Spotted fever due to Rickettsia australis
• A77.4 Ehrlichiosis
• A77.40 Ehrlichiosis, unspecified
• A77.41 Ehrlichiosis chaffeensis [E. chaffeensis]