I27: Other pulmonary heart diseases

Codes under I27 (Other pulmonary heart diseases). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
I27.0	Primary pulmonary hypertension	✓
I27.1	Kyphoscoliotic heart disease	✓
I27.2	Other secondary pulmonary hypertension	—
I27.8	Other specified pulmonary heart diseases	—
I27.9	Pulmonary heart disease, unspecified	✓
I27.20	Pulmonary hypertension, unspecified	✓
I27.21	Secondary pulmonary arterial hypertension	✓
I27.22	Pulmonary hypertension due to left heart disease	✓
I27.23	Pulmonary hypertension due to lung diseases and hypoxia	✓
I27.24	Chronic thromboembolic pulmonary hypertension	✓
I27.29	Other secondary pulmonary hypertension	✓
I27.81	Cor pulmonale (chronic)	✓
I27.82	Chronic pulmonary embolism	✓
I27.83	Eisenmenger's syndrome	✓
I27.84	Fontan related circulation	—
I27.89	Other specified pulmonary heart diseases	✓
I27.840	Fontan-associated liver disease [FALD]	✓
I27.841	Fontan-associated lymphatic dysfunction	✓
I27.848	Other Fontan-associated condition	✓
I27.849	Fontan related circulation, unspecified	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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