A75.3 Typhus fever due to Rickettsia tsutsugamushi

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

Applicable to

• Scrub (mite-borne) typhus
• Tsutsugamushi fever
• Typhus fever due to Orientia Tsutsugamushi (scrub typhus)

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)

• 081.2 Scrub typhus

Code annotations containing back-references to A75.3

Back-references to A75.3

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

Diagnosis Index entries for A75.3

• Disease, diseased › akamushi (scrub typhus)
• Disease, diseased › island (scrub typhus)
• Disease, diseased › Kedani (scrub typhus)
• Disease, diseased › shimamushi (scrub typhus)
• Disease, diseased › tsutsugamushi
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › Japanese river
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › kedani
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › Sumatran mite
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › tsutsugamushi
• Infection, infected, infective (opportunistic) › typhus › mite-borne
• Japanese › river fever
• Kedani fever
• Sumatran mite fever
• Tsutsugamushi (disease) (fever)
• Typhus (fever) › due to Rickettsia › tsutsugamushi
• Typhus (fever) › mite-borne
• Typhus (fever) › Orientia Tsutsugamushi (scrub typhus)
• Typhus (fever) › scrub (China) (India) (Malaysia) (New Guinea)
• Typhus (fever) › tropical (mite-borne)

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 (this code)
• A75.9 Typhus fever, unspecified