ICD-10-CM category
I27 Other pulmonary heart diseases
I27 is a category, not a billable code. Report one of the 17 complete codes below.
Codes in I27
- I27.0Primary pulmonary hypertension
- I27.1Kyphoscoliotic heart disease
- I27.20Pulmonary hypertension, unspecified
- I27.21Secondary pulmonary arterial hypertension
- I27.22Pulmonary hypertension due to left heart disease
- I27.23Pulmonary hypertension due to lung diseases and hypoxia
- I27.24Chronic thromboembolic pulmonary hypertension
- I27.29Other secondary pulmonary hypertension
- I27.81Cor pulmonale (chronic)
- I27.82Chronic pulmonary embolism
- I27.83Eisenmenger's syndrome
- I27.840Fontan-associated liver disease [FALD]
- I27.841Fontan-associated lymphatic dysfunction
- I27.848Other Fontan-associated condition
- I27.849Fontan related circulation, unspecified
- I27.89Other specified pulmonary heart diseases
- I27.9Pulmonary heart disease, unspecified
Outside the US? I27 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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