I74.9 — Embolism and thrombosis of unspecified artery
I74.9 is a billable, specific ICD-10-CM code for embolism and thrombosis of unspecified artery. It is valid for submission on a claim.
Risk adjustment
I74.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 264 Vascular Disease with Complications0.455 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
I74.9 is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52868Billing and Coding: Transesophageal Echocardiography (TEE)
- A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
- A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
- A56781Billing and Coding: Transthoracic Echocardiography (TTE)
How I74.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I74.9.
- Embolism(multiple) (paradoxical)
- Clot›circulation
- Embolism›artery
- Thrombosis, thrombotic›artery, arteries(postinfectional)
Related codes at this level
Codes that share I74. If I74.9 is not quite right, the correct code is usually one of these.
- I74.0Embolism and thrombosis of abdominal aorta
- I74.1Embolism and thrombosis of other and unspecified 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
Questions about I74.9
- Is I74.9 a billable ICD-10-CM code?
- Yes. I74.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I74.9 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).