ICD-10 Code I37.0 – Nonrheumatic pulmonary valve stenosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I37.0 – Nonrheumatic pulmonary valve stenosis
What it is
I37.0 identifies narrowing of the pulmonary valve that is not caused by rheumatic disease. It refers to obstruction at the valve between the right ventricle and the pulmonary artery.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include a systolic murmur, right ventricular outflow obstruction, and evidence of impaired blood flow through the pulmonary valve.
When to use this code
Use I37.0 when the provider documents nonrheumatic pulmonary valve stenosis as the confirmed diagnosis. This code is appropriate for congenital or acquired valve narrowing when rheumatic disease is not the cause. Code the documented condition, not a suspected murmur alone.
Do not use for
Do not use this code if the record states rheumatic pulmonary valve disease or another valve lesion instead. Check documentation when the diagnosis is only a heart murmur or when the pulmonary valve problem is unspecified.
Coding tip
Confirm that the provider specifically links the stenosis to the pulmonary valve and excludes rheumatic cause before assigning I37.0.