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I27 Other pulmonary heart diseases

ICD-10-CM category I27 sits in Chapter 9 (Diseases of the circulatory system, I00-I99). It contains 17 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

I27.2 Other secondary pulmonary hypertensionI27.8 Other specified pulmonary heart diseasesI27.84 Fontan related circulation

Billable codes in I27

CodeDescription
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

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