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A33 ICD-10-CA code: Tetanus neonatorum

A33 is the ICD-10-CA code for “Tetanus neonatorum” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

A33

Tetanus neonatorum

ICD-10-CA · Canada

Index terms

Entries in CIHI’s alphabetical index that lead to A33. Searching the index by the condition the note names is how coders reach this code.

  • Trismus, newborn
  • Trismus, neonatorum
  • Tetanus, tetanic (cephalic) (convulsions), neonatorum
  • Omphalitis (congenital) (newborn) (with mild hemorrhage), tetanus
  • Sepsis (generalized), umbilical (newborn) (organism unspecified), tetanus

Notes for A33

As CIHI prints them, with any note A33 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 A33 sits

  1. 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
  2. 2Block A30-A49Other bacterial diseases
  3. 3Valid code A33Tetanus neonatorum

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 A33 in the CIHI source

Frequently asked questions

What does ICD-10-CA code A33 mean?

A33 is the ICD-10-CA code for “Tetanus neonatorum” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is A33 in ICD-10-CA?

A33 sits under A30-A49 Other bacterial diseases, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).

What coding notes apply to A33?

ICD-10-CA lists Includes, Use additional code, Excludes notes for A33, 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 A33

A30Leprosy [Hansen's disease]A31Infection due to other mycobacteriaA32ListeriosisA34Obstetrical tetanusA35Other tetanusA36DiphtheriaA37Whooping coughA38Scarlet feverA39Meningococcal infectionA40Streptococcal sepsisA41Other sepsisA42ActinomycosisA43NocardiosisA44BartonellosisA46ErysipelasA48Other bacterial diseases, not elsewhere classifiedA49Bacterial infection of unspecified site