I08.3 Combined rheumatic disorders of mitral, aortic and tricuspid valves
The ICD-10-CM code for Combined rheumatic disorders of mitral, aortic and tricuspid valves is I08.3 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- I05-I09: Chronic rheumatic heart diseases (I05-I09)
- Category I08
- 7 codes (6 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to I08.3:
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) › mitral (chronic) (double) (fibroid) (heart) (inactive) (valve) (with chorea) › with › aortic (valve) disease › with tricuspid (valve) disease
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) › aortic (heart) (nonrheumatic) (valve) › with › tricuspid (valve) disease › with mitral (valve) disease
- Insufficiency, insufficient › aortic (valve) › with › mitral (valve) disease › with tricuspid (valve) disease
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) › aortic (heart) (nonrheumatic) (valve) › rheumatic › with mitral disease › with tricuspid (valve) disease
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) › mitral (chronic) (double) (fibroid) (heart) (inactive) (valve) (with chorea) › with › tricuspid (valve) disease › with aortic (valve) disease
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) › tricuspid (chronic) (heart) (inactive) (rheumatic) (valve) (with chorea) › with › aortic (valve) disease › mitral (valve) disease
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) › aortic (heart) (nonrheumatic) (valve) › with › mitral disease › with tricuspid (valve) disease
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) › tricuspid (chronic) (heart) (inactive) (rheumatic) (valve) (with chorea) › with › mitral (valve) disease › aortic (valve) disease
U.S. Hospital Utilization
- An estimated 127,650 U.S. inpatient stays in 2023 included I08.3 among the documented diagnoses.
- 5,755 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
Presumed relationship due to Index term “with”The classification presumes a causal relationship between hypertension and heart involvement and between hypertension and kidney involvement, as the two conditions are linked by the term “with” in the Alphabetic Index. These conditions should be coded as related even in the absence of provider documentation explicitly linking them, unless the documentation clearly states the conditions are unrelated.
Provider must link conditions not specifically indexed as relatedFor hypertension and conditions not specifically linked by relational terms such as “with,” “associated with” or “due to” in the classification, provider documentation must link the conditions in order to code them as related.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026