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    v1.0.28
    OpenPayerBilling CodesDiseases of arteries, arterioles and capillariesICD-10-CM i77-other-disorders-of-arteries-and-arterioles
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    ICD-10-CM Code For Other Disorders Of Arteries And Arterioles: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I77 includes nonatherosclerotic arterial and arteriolar disorders such as arterial aneurysms, dissections, arterial thrombosis, and other specified arterial abnormalities that affect blood vessels outside of the heart and major proximal arteries. These ICD-10-CM diagnosis codes are used to document vascular structural changes, acute events like dissection or thrombosis, or chronic arterial insufficiency, capturing disease severity, anatomical site, and clinical complexity relevant to this group. Accurate coding within the ICD-10-CM I77 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM I77: Other Disorders Of Arteries And Arterioles Overview

    The ICD-10-CM I77 group comprises disorders affecting the arterial wall and arteriolar circulation outside of atherosclerotic disease. These diagnoses involve structural or functional abnormalities of arteries and small arterial branches that can lead to ischemia, aneurysm, dissection, or vascular insufficiency. Accurate coding ensures clinical severity and site-specific involvement are captured, which supports appropriate reimbursement and complete clinical documentation.

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    When to Use

    Use a code from this group when documentation describes nonatherosclerotic arterial or arteriolar pathology such as aneurysm, dissection, thrombosis, or other specified arterial abnormality. Codes from this group should be selected to reflect the specific arterial site, nature of the lesion, and any associated complications documented in the medical record.

    ICD-10-CM Codes

    23 rows

    ICD-10-CM CodeDescription
    I77.0Arteriovenous fistula, acquired
    I77.1Stricture of artery
    I77.2Rupture of artery
    I77.3Arterial fibromuscular dysplasia
    I77.4Celiac artery compression syndrome
    I77.5Necrosis of artery
    I77.6Arteritis, unspecified
    I77.70Dissection of unspecified artery
    I77.71Dissection of carotid artery
    I77.72Dissection of iliac artery
    I77.73Dissection of renal artery
    I77.74Dissection of vertebral artery
    I77.75Dissection of other precerebral arteries
    I77.76Dissection of artery of upper extremity
    I77.77Dissection of artery of lower extremity
    I77.79Dissection of other specified artery
    I77.810Thoracic aortic ectasia
    I77.811Abdominal aortic ectasia
    I77.812Thoracoabdominal aortic ectasia
    I77.819Aortic ectasia, unspecified site

    Showing 1–20 of 23

    DRG Codes

    11 rows

    DRG CodeDescription
    299Peripheral Vascular Disorders with MCC
    300Peripheral Vascular Disorders with CC
    301Peripheral Vascular Disorders without CC/MCC
    391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC
    392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC
    545Connective Tissue Disorders with MCC
    546Connective Tissue Disorders with CC
    547Connective Tissue 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

    Typical Clinical Scenarios

    • An elderly patient with progressive lower extremity claudication and absent distal pulses is evaluated in vascular clinic for chronic limb ischemia; noninvasive arterial testing and duplex ultrasound show segmental stenosis and post-stenotic dilatation of the popliteal and tibial arteries, and the provider documents an arterial aneurysmal dilation related to atherosclerotic degeneration. A diagnosis from this arterial disorders group is assigned to capture the structural arterial abnormality contributing to ischemia. Typical codes: I77.3, I77.4
    • A middle-aged patient presents to the emergency department with sudden-onset severe abdominal pain and peritonitis; CT angiography reveals a splanchnic arterial dissection with associated thrombus and evidence of bowel ischemia requiring urgent vascular consultation. Because the primary issue is a nontraumatic arterial dissection of a visceral artery causing acute ischemic complications, a code from this group is used to describe the arterial dissection. Typical codes: I77.71, I77.72
    • A patient with known connective tissue disease (e.g., Marfan syndrome) is seen for surveillance and is found on imaging to have multiple arterial ectasias and focal aneurysmal dilations of medium-sized arteries without rupture; the clinician documents generalized arterial ectasia and arteriectasia as chronic vascular manifestations of the underlying condition. A code from this group is assigned to represent the diffuse arterial dilation as a comorbidity affecting management and imaging follow-up. Typical codes: I77.72, I77.79

    Related Codes

    I70-ATHEROSCLEROSIS

    ICD-10-CM Code For Atherosclerosis: Group Overview

    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

    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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