ICD-10 Code I36.9 – Nonrheumatic tricuspid valve disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I36.9 – Nonrheumatic tricuspid valve disorder, unspecified
What it is
I36.9 identifies a nonrheumatic disorder of the tricuspid valve when the documentation does not specify the exact type of valve problem. Use it for tricuspid valve disease not caused by rheumatic fever.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include a tricuspid valve abnormality on exam or imaging, but the specific disorder is not named in the record.
When to use this code
Use this code when the provider documents tricuspid valve disorder without identifying stenosis, regurgitation, or another specific lesion. It also fits when the condition is clearly nonrheumatic but the exact valve abnormality remains unspecified.
Check documentation if the note mentions congenital disease, rheumatic valve disease, or a more specific tricuspid diagnosis. Code the documented condition more precisely when possible.
Do not use for
Do not use I36.9 for rheumatic tricuspid valve disease or for a clearly documented specific tricuspid lesion such as stenosis or regurgitation. Check documentation if another valve disorder is named.
Coding tip
Query the provider when the record says “tricuspid valve disease” but does not state whether it is nonrheumatic or specify the lesion.