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    v1.0.28
    OpenPayerBilling CodesDiseases of arteries, arterioles and capillariesICD-10-CM i70-atherosclerosis
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    ICD-10-CM Code For Atherosclerosis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I70 includes atherosclerotic conditions of arteries, arterioles, and capillaries such as atherosclerosis of native arteries, bypass grafts, and unspecified arteries, covering coronary, cerebral, and peripheral vascular involvement. These ICD-10-CM diagnosis codes are used to document clinical scenarios including arterial plaque formation, ischemic complications, disease severity, and specific anatomic site involvement relevant to vascular disease. Accurate coding within the ICD-10-CM I70 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM I70: Atherosclerosis Overview

    The diagnoses in the International Classification of Diseases, Tenth Revision, Clinical Modification code group I70 represent atherosclerotic disease of arteries, arterioles, and capillaries affecting various vascular beds including coronary, cerebral, and peripheral arteries. These conditions involve plaque buildup, arterial narrowing, and potential ischemic complications that impact circulation and organ function. Accurate coding of these diagnoses matters for complete clinical documentation and appropriate reimbursement because it communicates disease severity, affected anatomic sites, and any related complications to payers and care teams.

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    When to Use

    Use a code from this group when a clinician documents atherosclerosis with identification of the affected arterial site or graft status and any associated complications such as ischemia or gangrene. Select the specific code that corresponds to the anatomic location, laterality, and presence of complications to reflect clinical severity and support billing.

    ICD-10-CM Codes

    246 rows

    ICD-10-CM CodeDescription
    I70.0Atherosclerosis of aorta
    I70.1Atherosclerosis of renal artery
    I70.201Unspecified atherosclerosis of native arteries of extremities, right leg
    I70.202Unspecified atherosclerosis of native arteries of extremities, left leg
    I70.203Unspecified atherosclerosis of native arteries of extremities, bilateral legs
    I70.208Unspecified atherosclerosis of native arteries of extremities, other extremity
    I70.209Unspecified atherosclerosis of native arteries of extremities, unspecified extremity
    I70.211Atherosclerosis of native arteries of extremities with intermittent claudication, right leg
    I70.212Atherosclerosis of native arteries of extremities with intermittent claudication, left leg
    I70.213Atherosclerosis of native arteries of extremities with intermittent claudication, bilateral legs
    I70.218Atherosclerosis of native arteries of extremities with intermittent claudication, other extremity
    I70.219Atherosclerosis of native arteries of extremities with intermittent claudication, unspecified extremity
    I70.221Atherosclerosis of native arteries of extremities with rest pain, right leg
    I70.222Atherosclerosis of native arteries of extremities with rest pain, left leg
    I70.223Atherosclerosis of native arteries of extremities with rest pain, bilateral legs
    I70.228Atherosclerosis of native arteries of extremities with rest pain, other extremity
    I70.229Atherosclerosis of native arteries of extremities with rest pain, unspecified extremity
    I70.231Atherosclerosis of native arteries of right leg with ulceration of thigh
    I70.232Atherosclerosis of native arteries of right leg with ulceration of calf
    I70.233Atherosclerosis of native arteries of right leg with ulceration of ankle

    Showing 1–20 of 246

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    DRG Codes

    8 rows

    DRG CodeDescription
    299Peripheral Vascular Disorders with MCC
    300Peripheral Vascular Disorders with CC
    301Peripheral Vascular Disorders without CC/MCC
    698Other Kidney and Urinary Tract Diagnoses with MCC
    699Other Kidney and Urinary Tract Diagnoses with CC
    700Other Kidney and Urinary Tract Diagnoses without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • An elderly patient with worsening exertional calf pain and nonhealing foot ulcer presents to vascular clinic for evaluation of peripheral arterial disease after ABI shows diminished ankle pressures and duplex demonstrates femoropopliteal atherosclerotic occlusive disease. The visit documents chronic limb ischemia with tissue loss and plans for revascularization; a diagnosis from this group is assigned to capture atherosclerotic peripheral artery disease with ulceration/gangrene. Typical codes: I70.239, I70.248
    • A middle-aged patient with long-standing hypertension and hyperlipidemia arrives to the emergency department with acute onset chest pain; coronary angiography reveals severe atherosclerotic narrowing of the native coronary arteries requiring percutaneous coronary intervention. A diagnosis from this group is assigned to indicate atherosclerosis of coronary arteries as the underlying cause of the ischemic presentation and interventional care. Typical codes: I70.201, I70.209
    • A diabetic patient admitted for evaluation of ischemic rest pain in the foot and documented atherosclerotic occlusion of tibial arteries following prior peripheral bypass surgery presents for routine follow-up and medication optimization; the atherosclerosis diagnosis is recorded as a chronic comorbidity influencing wound healing and limb perfusion. Typical codes: I70.291, I70.298

    Related Codes

    I71-AORTIC-ANEURYSM-AND-DISSECTION

    ICD-10-CM Code For Aortic Aneurysm And Dissection: Group Overview

    I72-OTHER-ANEURYSM-PERIPHERAL-ARTERIES

    ICD-10-CM Code For Other Aneurysm: Group Overview

    I73-OTHER-PERIPHERAL-VASCULAR-DISEASES

    ICD-10-CM Code For Other Peripheral Vascular Diseases: Group Overview

    I74-ARTERIAL-EMBOLISM-AND-THROMBOSIS

    ICD-10-CM Code For Arterial Embolism And Thrombosis: Group Overview

    I75-ATHEROEMBOLISM

    ICD-10-CM Code For Atheroembolism: Group Overview

    I76-SEPTIC-ARTERIAL-EMBOLISM

    ICD-10-CM Code For Septic Arterial Embolism: Group Overview

    I77-OTHER-DISORDERS-OF-ARTERIES-AND-ARTERIOLES

    ICD-10-CM Code For Other Disorders Of Arteries And Arterioles: Group Overview

    I78-DISEASES-OF-CAPILLARIES

    ICD-10-CM Code For Diseases Of Capillaries: Group Overview

    I79-DISORDERS-OF-ARTERIES-ARTERIOLES-CAPILLARIES

    ICD-10-CM Code For Disorders Of Arteries Arterioles And Capillaries In Diseases Classified Elsewhere: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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