Chronic rheumatic heart diseases (I05-I09) ICD-10-CM
The I05–I09 section covers chronic rheumatic heart diseases with 33 ICD-10-CM diagnosis codes, of which 27 are billable in fiscal year 2026. The section is organized into the 5 code ranges listed below.
Code Ranges in This Section 5 ranges · 33 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the I05–I09 Code Range
ICD-10 codes I05 through I09 are used to classify a range of chronic rheumatic heart diseases affecting heart valves and heart tissue due to rheumatic fever. These codes identify specific conditions like valve stenosis, insufficiency, and combined valve disorders on the mitral, aortic, and tricuspid valves.
This code block includes detailed classifications such as rheumatic mitral stenosis (I05.0), also known as mitral valve stenosis or rheumatic mitral valve obstruction, and rheumatic aortic insufficiency (I06.1), commonly called rheumatic aortic regurgitation. It also covers combined valve diseases (I08), including simultaneous involvement of mitral, aortic, and tricuspid valves. Additionally, codes like I09.0 address rheumatic myocarditis (inflammation of the heart muscle), while I09.81 specifies rheumatic heart failure, also referenced as chronic left-sided congestive heart failure due to rheumatic disease. Unspecified categories like I05.9 and I09.9 are used when detailed valve or tissue involvement is not documented. These codes support precise coding for rheumatic damage to heart valves and related heart conditions commonly resulting from rheumatic fever sequelae.
Questions About This Page
How many codes are in the I05-I09 range?
The I05-I09 range contains 33 ICD-10-CM diagnosis codes in FY 2026. 27 of them are billable, and the rest are category headers that organize the section.
What conditions does I05-I09 cover?
The range covers chronic rheumatic heart diseases. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
