Arterial embolism and thrombosis
In Diseases of arteries, arterioles and capillaries (I70-I79), chapter 9: Diseases of the Circulatory System
11 billable codes under I74: 1 is an MCC, 10 are a CC; all map to HCC 264 (Vascular Disease with Complications).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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Instructional notes
Includes: conditions that are coded here
- embolic infarction
- embolic occlusion
- thrombotic infarction
- thrombotic occlusion
Excludes2: not included here, code separately if applicable
- atheroembolism (I75.-)
- basilar embolism and thrombosis (I63.0-I63.2, I65.1)
- carotid embolism and thrombosis (I63.0-I63.2, I65.2)
- cerebral embolism and thrombosis (I63.3-I63.5, I66.-)
- coronary embolism and thrombosis (I21-I25)
- mesenteric embolism and thrombosis (K55.0-)
- ophthalmic embolism and thrombosis (H34.-)
- precerebral embolism and thrombosis NOS (I63.0-I63.2, I65.9)
- pulmonary embolism and thrombosis (I26.-)
- renal embolism and thrombosis (N28.0)
- retinal embolism and thrombosis (H34.-)
- septic embolism and thrombosis (I76)
- vertebral embolism and thrombosis (I63.0-I63.2, I65.0)
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 I74
I74 can't be used on a claim. Pick a billable code below; grey headings group them.
- I74.0Embolism and thrombosis of abdominal aorta
- I74.01Saddle embolus of abdominal aorta
- I74.09Other arterial embolism and thrombosis of abdominal aorta
- I74.1Embolism and thrombosis of other and unspecified parts of aorta
- I74.10Embolism and thrombosis of unspecified parts of aorta
- I74.11Embolism and thrombosis of thoracic aorta
- I74.19Embolism and thrombosis of other parts of aorta
- I74.2Embolism and thrombosis of arteries of the upper extremities
- I74.3Embolism and thrombosis of arteries of the lower extremities
- I74.4Embolism and thrombosis of arteries of extremities, unspecified
- I74.5Embolism and thrombosis of iliac artery
- I74.8Embolism and thrombosis of other arteries
- I74.9Embolism and thrombosis of unspecified artery
I74 MS-DRGs
As the principal diagnosis, all 11 billable codes under I74 group to MS-DRG 299, 300, 301, 791, or 793 (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 I74
Notes on these codes point to I74.
- I76 Use Additional Code: code to identify the site of the embolism (I74.-)
Code history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.