ICD-10 Code I27.89 – Other specified pulmonary heart diseases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I27.89 – Other specified pulmonary heart diseases
What it is
This code identifies pulmonary heart disease that is documented but does not fit a more specific ICD-10-CM category. It usually reflects right heart changes related to lung or pulmonary vascular disease.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings may include signs of right-sided heart strain, pulmonary hypertension, or chronic lung disease affecting the heart.
When to use this code
Use I27.89 when the provider clearly documents another specified pulmonary heart disease and no more specific code applies. It is appropriate when the record supports a pulmonary-heart connection but does not name a different listed condition. Check documentation if the diagnosis is vague or incomplete.
Do not use for
Do not use this code for pulmonary heart disease that is better described by another I27 code, or for nonspecific heart disease without pulmonary involvement. If the documentation only says “heart disease,” choose a more accurate code after review.
Coding tip
Match the code to the exact provider wording and confirm that pulmonary involvement is documented.