Rheumatic mitral valve diseases (I05) ICD-10-CM
The I05 code range covers rheumatic mitral valve diseases with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the I05 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the I05 range.
Rheumatic Mitral Insufficiency
Mitral valve insufficiency secondary to rheumatic fever.
Rheumatic Mitral Stenosis
Mitral valve stenosis secondary to rheumatic fever.
Rheumatic Mitral Valve Disease
A disorder of the mitral valve secondary to rheumatic fever.
About the I05 Code Range
Rheumatic disease of the mitral valve can involve narrowing, leakage, or both. It belongs to the chronic rheumatic heart diseases.
I05 separates narrowing, called stenosis, from leakage, called insufficiency. I05.0 describes stenosis, I05.1 describes insufficiency, and I05.2 describes both. I05.8 is for other rheumatic mitral valve diseases, while I05.9 is unspecified.
Questions About This Page
How many billable codes are in the I05 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the I05 range classify?
The range classifies rheumatic mitral valve diseases. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
