ICD-10 Code I36.8 – Other nonrheumatic tricuspid valve disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I36.8 – Other nonrheumatic tricuspid valve disorders
What it is
I36.8 identifies tricuspid valve disorders that are not caused by rheumatic heart disease and do not fit a more specific tricuspid valve code. Use it when the record describes an unspecified or other nonrheumatic tricuspid valve problem.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a documented tricuspid valve abnormality on exam or imaging, such as regurgitation or structural change, without evidence of rheumatic origin.
When to use this code
Use this code when the provider documents a nonrheumatic tricuspid valve disorder but does not name a more specific diagnosis. It is appropriate when the chart supports a tricuspid valve condition and the cause is not rheumatic. If the note gives a more specific tricuspid disorder, code that instead.
Do not use for
Do not use I36.8 for rheumatic tricuspid valve disease or for conditions with a more specific tricuspid valve code. Check documentation if the record actually describes another valvular disorder.
Coding tip
Confirm the valve, the nonrheumatic cause, and whether a more specific tricuspid code is documented before assigning I36.8.