A01 — Typhoid and paratyphoid fevers
Not billable
Is A01 billable?
No — A01 is a non-billable header code. A01 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 11 billable codes beneath A01.
Billable codes under this header
- A01.1Paratyphoid fever A
- A01.2Paratyphoid fever B
- A01.3Paratyphoid fever C
- A01.4Paratyphoid fever, unspecified
- A01.00Typhoid fever, unspecified
- A01.01Typhoid meningitis
- A01.02Typhoid fever with heart involvement
- A01.03Typhoid pneumonia
- A01.04Typhoid arthritis
- A01.05Typhoid osteomyelitis
- A01.09Typhoid fever with other complications
A01 at a glance
| Code | A01 |
|---|---|
| Description | Typhoid and paratyphoid fevers |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Use additional code — inherited from Chapter 1
Report an additional code alongside A01 to fully describe the condition. A01 is sequenced first.
- code to identify resistance to antimicrobial drugs (Z16.-)
Excludes2 — not included here — inherited from Chapter 1
The conditions below are not part of A01, but a patient may have both at the same time. When documentation supports it, A01 and the excluded code may both be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
What codes fall under A01? (5)
How long has A01 existed?
A01 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.