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A01 ICD-10-CA category: Typhoid and paratyphoid fevers

A01 isn’t a code on its own. Choose one of the 5 codes beneath it, the one the documentation supports.

Official description

A01

Typhoid and paratyphoid fevers

ICD-10-CA · Canada

Codes in A01

A01 isn’t a code on its own. Open the code that matches what the note documents.

A01.0Typhoid feverA01.1Paratyphoid fever AA01.2Paratyphoid fever BA01.3Paratyphoid fever CA01.4Paratyphoid fever, unspecified

Notes for A01

As CIHI prints them, with any note A01 takes from the headings above it.

Includes

  • Diseases generally recognized as communicable or transmissibleFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Use additional code

Add a code for this detail when the note documents it.

  • Use additional code (U82-U84) to identify resistance to antimicrobial drugsFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Excludes

Conditions classified elsewhere.

  • Carrier or suspected carrier of infectious disease (Z22.-)certain localized infections - see body system-related chaptersinfectious and parasitic diseases:• complicating pregnancy, childbirth and the puerperium [except obstetrical tetanus] (O98.-)• specific to the perinatal period [except tetanus neonatorum, whooping cough, congenital syphilis, perinatal gonococcal infection and perinatal human immunodeficiency virus [HIV] disease] (P35-P39)influenza and other acute respiratory infections (J00-J22)From Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Where A01 sits

  1. 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
  2. 2Block A00-A09Intestinal infectious diseases
  3. 3Category A01Typhoid and paratyphoid fevers

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See A01 in the CIHI source

Frequently asked questions

Is A01 a valid ICD-10-CA code?

No. A01 (Typhoid and paratyphoid fevers) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 5 codes; record the one the documentation supports.

Where is A01 in ICD-10-CA?

A01 sits under A00-A09 Intestinal infectious diseases, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).

What coding notes apply to A01?

ICD-10-CA lists Includes, Use additional code, Excludes notes for A01, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside A01

A00CholeraA02Other salmonella infectionsA03ShigellosisA04Other bacterial intestinal infectionsA05Other bacterial foodborne intoxications, not elsewhere classifiedA06AmoebiasisA07Other protozoal intestinal diseasesA08Viral and other specified intestinal infectionsA09Other gastroenteritis and colitis of infectious and unspecified origin