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  4. Sec. I26-I28
  5. Category I27
Category I27

Other pulmonary heart diseases

Clinical Classification Guidelines

Specific Diagnosis Codes

Primary pulmonary hypertension
I27.0
Kyphoscoliotic heart disease
I27.1
Other secondary pulmonary hypertension
I27.2
Pulmonary hypertension, unspecified
I27.20
Secondary pulmonary arterial hypertension
I27.21
Pulmonary hypertension due to left heart disease
I27.22
Pulmonary hypertension due to lung diseases and hypoxia
I27.23
Chronic thromboembolic pulmonary hypertension
I27.24
Other secondary pulmonary hypertension
I27.29
Other specified pulmonary heart diseases
I27.8
Cor pulmonale (chronic)
I27.81
Chronic pulmonary embolism
I27.82
Eisenmenger's syndrome
I27.83
Fontan related circulation
I27.84
Fontan-associated liver disease [FALD]
I27.840
Fontan-associated lymphatic dysfunction
I27.841
Other Fontan-associated condition
I27.848
Fontan related circulation, unspecified
I27.849
Other specified pulmonary heart diseases
I27.89
Pulmonary heart disease, unspecified
I27.9
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Data updated for October 2025 release.

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