I01.2 ICD-10-CA code: Acute rheumatic myocarditis
I01.2 is the ICD-10-CA code for “Acute rheumatic myocarditis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
I01.2Acute rheumatic myocarditis
ICD-10-CA · Canada · Also written I012
Index terms
Entries in CIHI’s alphabetical index that lead to I01.2. Searching the index by the condition the note names is how coders reach this code.
- Insufficiency, insufficient, myocardial, myocardium, rheumatic, active, acute or subacute
- Myocarditis (chronic) (fibroid) (interstitial) (old) (progressive) (senile) (with arteriosclerosis), toxic, rheumatic
- Myocarditis (chronic) (fibroid) (interstitial) (old) (progressive) (senile) (with arteriosclerosis), active, rheumatic (fever)
- Myocarditis (chronic) (fibroid) (interstitial) (old) (progressive) (senile) (with arteriosclerosis), acute or subacute (interstitial), rheumatic
- Myocarditis (chronic) (fibroid) (interstitial) (old) (progressive) (senile) (with arteriosclerosis), rheumatic (chronic) (inactive) (with chorea), active or acute
Notes for I01.2
As CIHI prints them, with any note I01.2 takes from the headings above it.
Includes
- Any condition in I00 with myocarditis
Excludes
Conditions classified elsewhere.
- Chronic diseases of rheumatic origin (I05-I09) unless rheumatic fever is also present or there is evidence of recrudescence or activity of the rheumatic process.From I01 Rheumatic fever with heart involvement
- 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 I01.2 sits
- 1ChapterChapter 9: Diseases of the circulatory system (I00-I99)
- 2Block I00-I02Acute rheumatic fever
- 3Category I01Rheumatic fever with heart involvement
- 4Valid code I01.2Acute rheumatic myocarditis
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.
Frequently asked questions
What does ICD-10-CA code I01.2 mean?
I01.2 is the ICD-10-CA code for “Acute rheumatic myocarditis” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is I01.2 in ICD-10-CA?
I01.2 sits under I01 Rheumatic fever with heart involvement, within I00-I02 Acute rheumatic fever, within Chapter 9: Diseases of the circulatory system (I00-I99).
What coding notes apply to I01.2?
ICD-10-CA lists Includes, Excludes notes for I01.2, 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.