Nonrheumatic tricuspid (valve) stenosis

This code represents a narrowing or obstruction of the tricuspid valve, which is located between the right atrium and right ventricle of the heart, due to causes other than rheumatic fever. This stenosis impedes blood flow from the right atrium to the right ventricle, leading to increased pressure in the right atrium and systemic venous congestion.

Use this code for documented cases of tricuspid valve stenosis where rheumatic etiology has been explicitly ruled out or is not indicated. This diagnosis is typically supported by echocardiogram findings, cardiac catheterization results, and clinical signs of right-sided heart failure.

• Differentiate carefully from rheumatic tricuspid stenosis (I07.0) based on physician documentation.
• Do not use this code if the stenosis is congenital; refer to codes in Q22.x for congenital malformations.
• Consider sequencing with codes for associated conditions such as right heart failure (I50.81) or pulmonary hypertension (I27.2x) if documented.