Typhus fever (A75) ICD-10-CM
The A75 code range covers typhus fever with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- rickettsiosis due to Ehrlichia sennetsu A79.81
Codes in the A75 Range 6 codes · 5 billable
About the A75 Code Range
Typhus fever belongs to the rickettsioses group of infectious diseases. Its subdivisions distinguish forms of typhus by name or by the organism named in the title.
A75.0 identifies louse-borne typhus due to Rickettsia prowazekii. A75.1 identifies Brill's disease, a named form of typhus. A75.2 and A75.3 name Rickettsia typhi and Rickettsia tsutsugamushi, respectively. A75.9 identifies typhus fever without a specified form.
Questions About This Page
How many billable codes are in the A75 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the A75 range classify?
The range classifies typhus fever. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
