I74.4 Embolism and thrombosis of arteries of extremities, unspecified

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Peripheral arterial embolism NOS

Applies from I74 Arterial embolism and thrombosis

Includes

• embolic infarction
• embolic occlusion
• thrombotic infarction
• thrombotic occlusion

Excludes2 (not included here)

• 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 first

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

Risk adjustment (HCC)

• CMS-HCC V28: HCC 264 — Vascular Disease with Complications
• CMS-HCC V22: HCC 107 — Vascular Disease with Complications
• ESRD V24: HCC 107

MS-DRG index

Defines the logic of DRG(s) 299-301 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 444.22 Arterial embolism and thrombosis of lower extremity (approximate)

Code annotations containing back-references to I74.4

Back-references to I74

• Use Additional: I76 Septic arterial embolism ("code to identify the site of the embolism (I74.-)")

Diagnosis Index entries for I74.4

• Embolism (multiple) (paradoxical) › artery › extremity
• Embolism (multiple) (paradoxical) › artery › limb
• Embolism (multiple) (paradoxical) › artery › peripheral
• Embolism (multiple) (paradoxical) › peripheral artery NOS
• Occlusion, occluded › artery › peripheral › thrombotic or embolic
• Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) › artery, arteries (postinfectional) › limb
• Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) › peripheral arteries

Nearby codes

• I74.10 Embolism and thrombosis of unspecified parts of aorta
• I74.11 Embolism and thrombosis of thoracic aorta
• I74.19 Embolism and thrombosis of other parts of aorta
• I74.2 Embolism and thrombosis of arteries of the upper extremities
• I74.3 Embolism and thrombosis of arteries of the lower extremities
• I74.4 Embolism and thrombosis of arteries of extremities, unspecified (this code)
• I74.5 Embolism and thrombosis of iliac artery
• I74.8 Embolism and thrombosis of other arteries
• I74.9 Embolism and thrombosis of unspecified artery