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    v1.0.28
    OpenPayerBilling CodesDiseases of arteries, arterioles and capillariesICD-10-CM i71-aortic-aneurysm-and-dissection
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    ICD-10-CM Code For Aortic Aneurysm And Dissection: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I71 includes diagnoses for aortic aneurysm and aortic dissection, covering conditions such as thoracic aortic aneurysm, abdominal aortic aneurysm, ruptured aneurysm, and various types of aortic dissection. These ICD-10-CM diagnosis codes are used to document clinical scenarios including aneurysm location, rupture status, and presence of dissection or complications, capturing disease severity and organ involvement. Accurate coding within the ICD-10-CM I71 group supports proper claim adjudication.

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    ICD-10-CM I71: Aortic Aneurysm And Dissection Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I71 encompasses aortic aneurysms and aortic dissections, representing pathological dilation or tearing of the aortic wall. These diagnoses target the arterial system, specifically the thoracic and abdominal segments of the aorta, and often reflect life-threatening vascular conditions. Accurate coding matters for reimbursement because it documents disease severity, treatment complexity, and helps ensure appropriate claim processing.

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    When to Use

    Use codes from this group when documenting patients with diagnosed aortic dilation meeting aneurysm criteria or with documented aortic wall tear consistent with dissection. Select codes that specify the anatomical location, rupture status, and any associated complications to reflect clinical complexity.

    ICD-10-CM Codes

    31 rows

    ICD-10-CM CodeDescription
    I71.00Dissection of unspecified site of aorta
    I71.010Dissection of ascending aorta
    I71.011Dissection of aortic arch
    I71.012Dissection of descending thoracic aorta
    I71.019Dissection of thoracic aorta, unspecified
    I71.02Dissection of abdominal aorta
    I71.03Dissection of thoracoabdominal aorta
    I71.10Thoracic aortic aneurysm, ruptured, unspecified
    I71.11Aneurysm of the ascending aorta, ruptured
    I71.12Aneurysm of the aortic arch, ruptured
    I71.13Aneurysm of the descending thoracic aorta, ruptured
    I71.20Thoracic aortic aneurysm, without rupture, unspecified
    I71.21Aneurysm of the ascending aorta, without rupture
    I71.22Aneurysm of the aortic arch, without rupture
    I71.23Aneurysm of the descending thoracic aorta, without rupture
    I71.30Abdominal aortic aneurysm, ruptured, unspecified
    I71.31Pararenal abdominal aortic aneurysm, ruptured
    I71.32Juxtarenal abdominal aortic aneurysm, ruptured
    I71.33Infrarenal abdominal aortic aneurysm, ruptured
    I71.40Abdominal aortic aneurysm, without rupture, unspecified

    Showing 1–20 of 31

    DRG Codes

    3 rows

    DRG CodeDescription
    299Peripheral Vascular Disorders with MCC
    300Peripheral Vascular Disorders with CC
    301Peripheral Vascular Disorders without CC/MCC

    Typical Clinical Scenarios

    • An older patient with sudden, severe tearing chest and back pain collapses in the emergency department; imaging (CT angiography) shows an intimal flap with contrast extravasation indicating an acute ascending aortic dissection requiring emergent surgical consultation. This is an acute, life‑threatening presentation where an aortic dissection code is assigned to capture the emergent pathology. Typical codes: I71.01, I71.00.
    • A middle‑aged patient with known thoracic aortic aneurysm under surveillance presents for routine follow‑up with stable aneurysm dimensions on serial imaging and no signs of rupture or dissection; outpatient management and periodic imaging continue. This is a chronic, nonruptured aneurysm encounter coded to reflect the presence and location of the aneurysm for monitoring and care planning. Typical codes: I71.2, I71.3.
    • A patient admitted for abdominal aortic aneurysm repair develops postoperative hemorrhage and is found to have a ruptured infrarenal aneurysm with hemodynamic instability; coding documents the complication of rupture and the aneurysm site to support inpatient care and complication tracking. Typical codes: I71.3, I71.5.

    Related Codes

    I70-ATHEROSCLEROSIS

    ICD-10-CM Code For Atherosclerosis: 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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