ICD-10 Code I37 – Nonrheumatic pulmonary valve disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I37 – Nonrheumatic pulmonary valve disorders
What it is
I37 identifies disorders of the pulmonary valve that are not caused by rheumatic fever. Use it when documentation describes pulmonary valve disease without a rheumatic origin.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a pulmonary valve murmur, evidence of stenosis or insufficiency, or imaging that shows structural valve abnormality.
When to use this code
Use I37 when the provider documents a nonrheumatic pulmonary valve disorder and does not name a more specific subtype. It may apply to congenital or acquired valve problems if the record clearly excludes rheumatic disease. Check documentation when the cause is not stated.
Do not use for
Do not use I37 for rheumatic valve disease or for other specific heart valve disorders documented elsewhere. If the record identifies a different valve or a more specific diagnosis, code that condition instead.
Coding tip
Look for the valve name and the cause; if rheumatic origin is documented, I37 is not appropriate.