I27Header code — not billable
Other pulmonary heart diseases
- Chapter
- 9. Diseases of the circulatory system
- Category
- I27
- Effective date
- October 1, 2026
Related codes in category I27
I27.0Primary pulmonary hypertensionYesI27.1Kyphoscoliotic heart diseaseYesI27.2Other secondary pulmonary hypertensionI27.20Pulmonary hypertension, unspecifiedYesI27.21Secondary pulmonary arterial hypertensionYesI27.22Pulmonary hypertension due to left heart diseaseYesI27.23Pulmonary hypertension due to lung diseases and hypoxiaYesI27.24Chronic thromboembolic pulmonary hypertensionYesI27.29Other secondary pulmonary hypertensionYesI27.8Other specified pulmonary heart diseasesI27.81Cor pulmonale (chronic)YesI27.82Chronic pulmonary embolismYes
Frequently asked questions
What is ICD-10 code I27?
I27 is an ICD-10-CM diagnosis code for Other pulmonary heart diseases.
Is I27 a billable code?
No. I27 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is I27 in?
I27 falls under Chapter 9: Diseases of the circulatory system.
When did I27 become effective?
I27 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to I27?
I27 belongs to category I27, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.