ICD-10-CM 2027
ICD-10 code for tricuspid disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › tricuspid”. Page updated September 29, 2026.
About coding tricuspid disease
The ICD-10-CM code for tricuspid disease is I07.9 (Rheumatic tricuspid valve disease, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on I07.9.
Within I07, choose I07.9 (Rheumatic tricuspid valve disease, unspecified) only when documentation doesn't support a more specific option: rheumatic tricuspid stenosis (I07.0), rheumatic tricuspid insufficiency (I07.1), rheumatic tricuspid stenosis and insufficiency (I07.2) and other rheumatic tricuspid valve diseases (I07.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 306 (Cardiac Congenital and Valvular Disorders with MCC, relative weight 1.546) and DRG 307 (Cardiac Congenital and Valvular Disorders without MCC, relative weight 0.9148), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific tricuspid disease codes (official index)
- nonrheumatic I36.9 — Nonrheumatic tricuspid valve disorder, unspecified
Common questions about tricuspid disease ICD-10 codes
What is the ICD-10 code for tricuspid disease?
- I07.9 — Rheumatic tricuspid valve disease, unspecified. More specific codes apply when the documentation supports them: I36.9.
What is the ICD-10 code for nonrheumatic tricuspid disease?
- I36.9 — Nonrheumatic tricuspid valve disorder, unspecified.
Is I07.9 billable?
- Yes. I07.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I07.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I07.9 as a principal diagnosis.
Is I07.9 a CC or MCC?
- No. I07.9 is neither a CC nor an MCC under MS-DRG v44.0.