Disorders of arteries, arterioles and capillaries in diseases classified elsewhere (I79) ICD-10-CM
The I79 code range covers disorders of arteries, arterioles and capillaries in diseases classified elsewhere with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the I79 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the I79 range.
Calciphylaxis
Condition of induced systemic hypersensitivity in which tissues respond to appropriate challenging agents with a sudden local calcification.
About the I79 Code Range
The ICD-10 code I79 and its subcodes categorize disorders affecting arteries, arterioles, and capillaries that occur as part of other underlying diseases. These codes are used when vascular problems like aneurysms, inflammation, or other arterial issues are linked to systemic conditions listed elsewhere in medical classifications.
ICD-10 code I79.0I79.1Immunoglobulin G4 related disease and its variants like Immunoglobulin G4 related aortitis or periaortitis. This highlights inflammation of the aorta tied to immune system disorders. The category I79.8vascular thoracic outlet syndrome, autoimmune vasculitis, or calciphylaxis, which involves calcification of small blood vessels, especially in patients with kidney disease. Understanding these codes helps medical coders accurately identify vascular complications related to systemic illnesses, ensuring precise documentation and management.
Questions About This Page
How many billable codes are in the I79 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the I79 range classify?
The range classifies disorders of arteries, arterioles and capillaries in diseases classified elsewhere. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
