Pulmonary heart disease and diseases of pulmonary circulation (I26-I28) ICD-10-CM
The I26–I28 section covers pulmonary heart disease and diseases of pulmonary circulation with 41 ICD-10-CM diagnosis codes, of which 33 are billable in fiscal year 2027. The section is organized into the 3 code ranges listed below.
Code Ranges in This Section 3 ranges · 41 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| I26 | Pulmonary embolism (I26) | 15 | 12 |
| I27 | Other pulmonary heart diseases (I27) | 21 | 17 |
| I28 | Other diseases of pulmonary vessels (I28) | 5 | 4 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the I26–I28 Code Range
These conditions involve the heart and blood vessels associated with circulation through the lungs. A pulmonary embolism is a blockage of a lung artery or one of its branches by an embolus.
I26 separates pulmonary embolism by whether acute cor pulmonale is present. I27 distinguishes primary from secondary pulmonary hypertension and includes kyphoscoliotic and other pulmonary heart diseases. I28 separates an arteriovenous fistula of pulmonary vessels from a pulmonary artery aneurysm and other pulmonary vessel diseases.
Questions About This Page
How many codes are in the I26-I28 range?
The I26-I28 range contains 41 ICD-10-CM diagnosis codes in FY 2027. 33 of them are billable, and the rest are category headers that organize the section.
What conditions does I26-I28 cover?
The range covers pulmonary heart disease and diseases of pulmonary circulation. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
