Other diseases of pulmonary vessels
In Pulmonary heart disease and diseases of pulmonary circulation (I26-I28), chapter 9: Diseases of the Circulatory System
4 billable codes under I28: 2 are a CC; all map to HCC 226 (Heart Failure, Except End-Stage and Acute).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers hypertension with heart and kidney disease, coronary artery disease with angina, perioperative stroke, cerebrovascular sequelae, and acute myocardial infarction types and timing.
- Hypertension (page 50)
- Atherosclerotic Coronary Artery Disease and Angina (page 52)
- Intraoperative and Postprocedural Cerebrovascular Accident (page 53)
- Sequelae of Cerebrovascular Disease (page 53)
- Acute myocardial infarction (AMI) (page 54)
All codes under I28
I28 can't be used on a claim. Pick a billable code below; grey headings group them.
I28 MS-DRGs
As the principal diagnosis, all 4 billable codes under I28 group to MS-DRG 314, 315, or 316 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
Other codes that refer to I28
Notes on these codes point to I28.
- I77 Excludes2: pulmonary artery (I28.-)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Vascular Diseases
Your vascular system is your body's network of blood vessels. It includes your: Vascular diseases are conditions which affect your vascular system. They are common and can be serious. Some types include:
Read more about vascular diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.