ICD-10 Code I28.8 – Other diseases of pulmonary vessels (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I28.8 – Other diseases of pulmonary vessels
What it is
I28.8 is used for other specified disorders of the pulmonary vessels that do not fit a more specific ICD-10-CM code. It refers to abnormal conditions affecting the blood vessels in the lungs.
Clinical signs
Clinical features vary; refer to documentation. Findings may include evidence of pulmonary vascular disease on imaging or other evaluation, with symptoms depending on the underlying vessel disorder.
When to use this code
Use this code when the record clearly identifies a pulmonary vessel disorder but does not name a more specific diagnosis. It may apply when the clinician documents an unspecified or other pulmonary vascular condition. Check documentation to confirm the condition is not better coded elsewhere.
Do not use for
Do not use I28.8 when the chart supports pulmonary embolism, pulmonary hypertension, or another more specific pulmonary vascular diagnosis. Also avoid it if the record only describes a symptom or a general cardiopulmonary finding.
Coding tip
Review the full assessment and imaging report so you code the most specific pulmonary vascular disorder documented.