A75.9 Typhus fever, unspecified

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

Applicable to

• Typhus (fever) NOS

Applies from A75 Typhus fever

Excludes1 (never code together)

• rickettsiosis due to Ehrlichia sennetsu (A79.81)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 081.9 Typhus, unspecified

Code annotations containing back-references to A75.9

Back-references to A75.9

• Code First: I41 Myocarditis in diseases classified elsewhere ("typhus (A75.0-A75.9)")

Diagnosis Index entries for A75.9

• Canton fever
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › Canton
• Infection, infected, infective (opportunistic) › typhus
• Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) › in (due to) › typhus NEC
• Petechial typhus
• Tabardillo
• Typhus (fever)
• Typhus (fever) › brain
• Typhus (fever) › cerebral
• Typhus (fever) › petechial

Nearby codes

• A75 Typhus fever
• A75.0 Epidemic louse-borne typhus fever due to Rickettsia prowazekii
• A75.1 Recrudescent typhus [Brill's disease]
• A75.2 Typhus fever due to Rickettsia typhi
• A75.3 Typhus fever due to Rickettsia tsutsugamushi
• A75.9 Typhus fever, unspecified (this code)