Alopecia areata (L63) ICD-10-CM
The L63 code range covers alopecia areata with 6 ICD-10-CM diagnosis codes. 5 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 L63 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L63 range.
Alopecia Areata
Loss of scalp and body hair involving microscopically inflammatory patchy areas.
About the L63 Code Range
ICD-10 code L63 is used to classify alopecia areata, an autoimmune condition that causes hair loss in well-defined patches. This code section includes various specific types such as alopecia totalis, universalis, and ophiasis.
The ICD-10 code for alopecia totalis (L63.0) accounts for complete scalp hair loss, also referred to in medical records as “alopecia totalis” or linked to antibody deficiencies. For cases involving total hair loss of the entire body, L63.1 captures alopecia universalis. The subtype L63.2 represents ophiasis, a distinct pattern of hair loss along the scalp edges. The code L63.8 covers “other alopecia areata,” which may include localized hair loss of eyebrows, eyelashes, beard, or limbs, with synonyms like “circumscribed alopecia areata” often found in clinical notes. When the exact form is not specified, L63.9 is appropriate for general alopecia areata cases, sometimes recorded with nail involvement described as “pitting of nails due to alopecia areata.” Medical coders use this set of codes to accurately identify and document the specific type and extent of alopecia areata, facilitating appropriate diagnosis and treatment tracking.
Questions About This Page
How many billable codes are in the L63 range?
Of the 6 codes in this range, 5 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 L63 range classify?
The range classifies alopecia areata. 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.
