Diseases of capillaries (I78) ICD-10-CM
The I78 code range covers diseases of capillaries with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the I78 Range 5 codes · 4 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the I78 range.
Capillary Disorder
A disorder of microvessels.
Nevus
A circumscribed stable malformation of the skin and occasionally of the oral mucosa, which is not due to external causes and therefore presumed to be of hereditary origin.
Telangiectasia, Hereditary Hemorrhagic
An autosomal dominant vascular anomaly characterized by telangiectases of the skin and mucous membranes and by recurrent gastrointestinal bleeding. This disorder is caused by mutations of a gene (on chromosome 9q3) which encodes endoglin, a membrane glycoprotein that binds TRANSFORMING GROWTH FACTOR BETA.
About the I78 Code Range
Capillaries are tiny blood vessels. This category groups diseases of those vessels within the circulatory system.
I78.0 identifies an inherited bleeding-related condition. I78.1 identifies a nevus, a skin mark described as non-neoplastic, or not a tumor. I78.8 groups other capillary diseases, while I78.9 identifies an unspecified capillary disease.
Questions About This Page
How many billable codes are in the I78 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the I78 range classify?
The range classifies diseases of capillaries. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
