A75.9
Typhus fever, unspecified
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 4 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 6 never code together
A00-B99chapter
Excludes1
- certain localized infections - see body system-related chapters
Excludes2
- carrier or suspected carrier of infectious disease (Z22.-)Z22.-
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
- infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
- influenza and other acute respiratory infections (J00-J22)J00-J22
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 3
Index entries leading here 7
- Typhus (fever) A75.9
- Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
- Canton A75.9
- Canton fever A75.9
- Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) I51.4
- in (due to)
- typhus NEC A75.9
- in (due to)
- Infection, infected, infective (opportunistic) B99.9
- typhus A75.9
- Petechial typhus A75.9
- Tabardillo A75.9
Alongside this code 4 same parent — A75
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.