2026 ICD-10-CM Diagnosis Code I74.5Embolism and thrombosis of iliac artery

ICD-10-CM Codes›I00–I99›I70-I79›I74

ICD-10-CM I74.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I74.5 is a billable ICD-10-CM diagnosis code for embolism and thrombosis of iliac artery. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 299 through 301. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Aortic and peripheral arterial embolism or thrombosis.

Code Identity

ICD-10-CM Code
I74.5
Billable Status
Yes — Valid for Submission
Code Describes
Embolism and thrombosis of iliac artery
Short Description
Embolism and thrombosis of iliac artery
Same as the full description in the CMS dataset.
Parent Code
I74
Arterial embolism and thrombosis

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI70-I79Diseases of arteries, arterioles and capillaries
CategoryI74Arterial embolism and thrombosis
This CodeI74.5Embolism and thrombosis of iliac artery

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute thromboembolic iliac artery occlusion
  • Acute thrombotic iliac artery occlusion
  • Common iliac artery occlusion
  • Common iliac artery thrombosis
  • Embolism and/or thrombosis of the common iliac artery
  • Embolism of iliac artery
  • Embolism of left iliac artery
  • Embolism of right iliac artery
  • External iliac artery occlusion
  • External iliac artery thrombosis
  • Iliac artery occlusion
  • Internal iliac artery thrombosis
  • Occlusion of aortoiliac artery
  • Terminal aortic occlusion
  • Thromboembolus of external iliac artery
  • Thromboembolus of internal iliac artery
  • Thrombosis of bilateral iliac arteries
  • Thrombosis of iliac artery
  • Thrombosis of left iliac artery
  • Thrombosis of right iliac artery

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Embolism(multiple) (paradoxical)
      • artery
        • iliac
    • Obstruction, obstructed, obstructive
      • iliofemoral (artery)
    • Occlusion, occluded
      • artery
        • iliac
    • Occlusion, occluded
      • iliac artery
    • Thrombosis, thrombotic(bland) (multiple) (progressive) (silent) (vessel)
      • artery, arteries (postinfectional)
        • iliac

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR030
Aortic and peripheral arterial embolism or thrombosis
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert I74.5 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
444.81 Iliac artery embolism
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I74.5Overview

Is I74.5 (Arterial embolism and thrombosis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report embolism and thrombosis of iliac artery on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I74.5 group to?

When embolism and thrombosis of iliac artery is the principal diagnosis on an inpatient stay, it groups to MS-DRG 299, 300, 301, with relative weights from 0.7197 to 1.6327 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of I74.5?

Under the General Equivalence Mappings, embolism and thrombosis of iliac artery converts to ICD-9-CM 444.81 (iliac artery embolism). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.