ICD-10 Code I37.9 – Nonrheumatic pulmonary valve disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I37.9 – Nonrheumatic pulmonary valve disorder, unspecified
What it is
This code identifies a nonrheumatic disorder of the pulmonary valve when the record does not specify the exact type. Use it for valve problems not caused by rheumatic heart disease.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records may describe a pulmonary valve abnormality, murmur, regurgitation, stenosis, or other valve dysfunction without a rheumatic cause.
When to use this code
Use I37.9 when the clinician documents a pulmonary valve disorder but does not name a more specific diagnosis. It also fits when the note confirms a nonrheumatic pulmonary valve condition and no further detail is available. If the type is specified, code the more exact option instead.
Do not use for
Do not use this code for rheumatic valve disease or for disorders of other heart valves. Check documentation if the record identifies congenital, acquired, or more specific pulmonary valve pathology.
Coding tip
Query for the exact pulmonary valve diagnosis before defaulting to unspecified.