I05.0 ICD-10-CA code: Mitral stenosis
I05.0 is the ICD-10-CA code for “Mitral stenosis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
I05.0Mitral stenosis
ICD-10-CA · Canada · Also written I050
Index terms
Entries in CIHI’s alphabetical index that lead to I05.0. Searching the index by the condition the note names is how coders reach this code.
- Stricture, mitral (valve)
- Stenosis (cicatricial), mitral (chronic) (inactive) (valve)
Notes for I05.0
As CIHI prints them, with any note I05.0 takes from the headings above it.
Includes
- Mitral (valve) obstruction (rheumatic)
- Conditions classifiable to (I05.0) and (I05.2-I05.9) whether specified as rheumatic or notFrom I05 Rheumatic mitral valve diseases
Excludes
Conditions classified elsewhere.
- When specified as nonrheumatic (I34.-)From I05 Rheumatic mitral valve diseases
- 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 I05.0 sits
- 1ChapterChapter 9: Diseases of the circulatory system (I00-I99)
- 2Block I05-I09Chronic rheumatic heart diseases
- 3Category I05Rheumatic mitral valve diseases
- 4Valid code I05.0Mitral stenosis
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 I05.0 mean?
I05.0 is the ICD-10-CA code for “Mitral stenosis” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is I05.0 in ICD-10-CA?
I05.0 sits under I05 Rheumatic mitral valve diseases, within I05-I09 Chronic rheumatic heart diseases, within Chapter 9: Diseases of the circulatory system (I00-I99).
What coding notes apply to I05.0?
ICD-10-CA lists Includes, Excludes notes for I05.0, 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.