I46 ICD-10-CA category: Cardiac arrest

I46 isn’t a code on its own. Choose one of the 3 codes beneath it, the one the documentation supports.

Official description

I46

Cardiac arrest

ICD-10-CA · Canada

Codes in I46

I46 isn’t a code on its own. Open the code that matches what the note documents.

I46.0Cardiac arrest with successful resuscitation I46.1Sudden cardiac death, so described I46.9Cardiac arrest, unspecified

Notes for I46

As CIHI prints them, with any note I46 takes from the headings above it.

Excludes

Conditions classified elsewhere.

Cardiogenic shock (R57.0)complicating:• abortion or ectopic or molar pregnancy (O00-O07), (O08.8)• obstetric surgery and procedures (O75.4)coronary arrest of newborn (infant) (P29.10)neonatal cardiac arrest (P29.10)
Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)transient cerebral ischaemic attacks and related syndromes (G45.-)From Chapter 9: Diseases of the circulatory system (I00-I99)

Where I46 sits

1ChapterChapter 9: Diseases of the circulatory system (I00-I99)
2Block I30-I52Other forms of heart disease
3Category I46Cardiac arrest

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 I46 in the CIHI source

Frequently asked questions

Is I46 a valid ICD-10-CA code?

No. I46 (Cardiac arrest) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 3 codes; record the one the documentation supports.

Where is I46 in ICD-10-CA?

I46 sits under I30-I52 Other forms of heart disease, within Chapter 9: Diseases of the circulatory system (I00-I99).

What coding notes apply to I46?

ICD-10-CA lists Excludes notes for I46, 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.

View I30-I52