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 2026, 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.
Mitral Valve Stenosis
Narrowing of the passage through the MITRAL VALVE due to FIBROSIS, and CALCINOSIS in the leaflets and chordal areas. This elevates the left atrial pressure which, in turn, raises pulmonary venous and capillary pressure leading to bouts of DYSPNEA and TACHYCARDIA during physical exertion. RHEUMATIC FEVER is its primary cause.
About the I05 Code Range
The ICD-10 code I05 covers various rheumatic mitral valve diseases, conditions caused by rheumatic fever that affect the mitral valve in the heart. These codes help classify specific types of valve damage, including stenosis, insufficiency, or combinations of both.
These codes serve to identify disorders such as rheumatic mitral stenosis (I05.0), characterized by narrowing of the mitral valve, sometimes referred to by terms like mitral valve stenosis or pulmonary hypertension due to left-sided valvular heart disease. Rheumatic mitral insufficiency (I05.1) refers to valve leakage, also known as rheumatic mitral regurgitation. When stenosis and insufficiency occur together, I05.2 is used, encompassing conditions like mitral stenosis with regurgitation. Additional forms of rheumatic damage to the mitral valve, such as leaflet changes and annular calcification, fall under I05.8. For unspecified rheumatic mitral valve diseases or chronic rheumatic carditis affecting the valve, I05.9 applies. Using these codes accurately supports proper documentation and management of rheumatic heart complications.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
