FY2027 ICD-10-CM reference
A01: Typhoid and paratyphoid fevers
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Typhoid and paratyphoid fevers. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
CMS-HCC V28
Not applicable to this nonbillable heading
CMS-HCC V24
Not applicable to this nonbillable heading
ESRD
Not applicable to this nonbillable heading
PACE
Not applicable to this nonbillable heading
RxHCC
Not applicable to this nonbillable heading
HHS-HCC
Not applicable to this nonbillable heading
More specific FY2027 codes
- A01.0: Typhoid feverNonbillable heading
- A01.1: Paratyphoid fever ABillable code
- A01.2: Paratyphoid fever BBillable code
- A01.3: Paratyphoid fever CBillable code
- A01.4: Paratyphoid fever, unspecifiedBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Includes
diseases generally recognized as communicable or transmissible
Source: A00-B99 (chapter, inherited).
Instructional note
code to identify resistance to antimicrobial drugs (Z16.-)
Source: A00-B99 (chapter, inherited).
Excludes2
carrier or suspected carrier of infectious disease (Z22.-)
Source: A00-B99 (chapter, inherited).
Excludes2
certain localized infections - see body system-related chapters
Source: A00-B99 (chapter, inherited).
Excludes2
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
Source: A00-B99 (chapter, inherited).
Excludes2
infectious and parasitic diseases specific to the perinatal period (P35-P39)
Source: A00-B99 (chapter, inherited).
Excludes2
influenza and other acute respiratory infections (J00-J22)
Source: A00-B99 (chapter, inherited).
Compare the FY2027 additions, removals and billable-status changes
What does A01 mean in FY2027?
The official ICD-10-CM descriptor is Typhoid and paratyphoid fevers. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is A01 billable in FY2027?
The FY2027 order file marks A01 as a nonbillable heading. Select a complete billable child code.
Does A01 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition