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I74.3

✓ Billable

Embolism and thrombosis of arteries of the lower extremities

Diseases of the circulatory system (I00-I99)

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⚠️ Excludes2

inherited

Rules inherited from parent codes.

I74
  • • 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)

📋 Code Instructions

inherited
I74
  • • Code first: embolism and thrombosis complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2)
  • • Code first: embolism and thrombosis complicating pregnancy, childbirth and the puerperium (O88.-)

Clinical Description

ICD-10-CM code I74.3 represents embolism and thrombosis of arteries of the lower extremities. This code falls under the Diseases of the circulatory system (I00-I99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code I74.3?

ICD-10-CM code I74.3 is "Embolism and thrombosis of arteries of the lower extremities". It belongs to the category: Diseases of the circulatory system (I00-I99).

Is I74.3 a billable ICD-10 code?

Yes, I74.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Can I74.3 be coded with other codes?

I74.3 has 13 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in I74

Other codes in the same category that may be relevant for differential coding:

I74.0Embolism and thrombosis of abdominal aortaI74.1Embolism and thrombosis of other and unspecified parts of aortaI74.2Embolism and thrombosis of arteries of the upper extremitiesI74.4Embolism and thrombosis of arteries of extremities, unspecifiedI74.5Embolism and thrombosis of iliac arteryI74.8Embolism and thrombosis of other arteriesI74.9Embolism and thrombosis of unspecified artery

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Code Information

CodeI74.3
BillableYes
ParentI74
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes213 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)