Other follicular disorders (L73) ICD-10-CM
The L73 code range covers other follicular disorders 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 L73 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L73 range.
Acne Keloid
A type of acneiform disorder in which secondary pyogenic infection in and around pilosebaceous structures ends in keloidal scarring. It manifests as persistent folliculitis of the back of the neck associated with occlusion of the follicular orifices. It is most often encountered in black or Asian men.
Folliculitis
Inflammation of follicles, primarily hair follicles.
Hidradenitis
The inflammation of a sweat gland (usually of the apocrine type). The condition can be idiopathic or occur as a result of or in association with another underlying condition. Neutrophilic eccrine hidradenitis is a relatively rare variant that has been reported in patients undergoing chemotherapy, usually for non-Hodgkin lymphomas or leukemic conditions.
Hidradenitis Suppurativa
A chronic suppurative and cicatricial disease of the apocrine glands occurring chiefly in the axillae in women and in the groin and anal regions in men. It is characterized by poral occlusion with secondary bacterial infection, evolving into abscesses which eventually rupture. As the disease becomes chronic, ulcers appear, sinus tracts enlarge, fistulas develop, and fibrosis and scarring become evident.
Tinea Versicolor
A common chronic, noninflammatory and usually symptomless disorder, characterized by the occurrence of multiple macular patches of all sizes and shapes, and varying in pigmentation from fawn-colored to brown. It is seen most frequently in hot, humid, tropical regions and is mostly caused by MALASSEZIA FURFUR (formerly Pityrosporum orbiculare).
About the L73 Code Range
The ICD-10 code section L73 covers a group of skin conditions called other follicular disorders, which affect hair follicles in various ways. These codes help healthcare providers classify and document specific follicular diseases.
This section includes codes such as L73.0 for Acne keloidalis—also known as scalp folliculitis or keloidalis nuchae—characterized by bumps and scarring typically on the back of the head. L73.1 designates Pseudofolliculitis barbae, commonly referred to as razor bumps or pili incarnati, an irritation caused by ingrown hairs often seen in beard areas. L73.2 covers Hidradenitis suppurativa, a chronic inflammatory condition affecting sweat glands that can involve painful nodules and abscesses in areas like the armpits and groin. Other follicular conditions, such as acute or chronic folliculitis, sebaceous gland issues, and other specified follicular disorders, fall under codes L73.8 and L73.9. Using these specific ICD-10 codes for follicular disorders ensures precise diagnosis and treatment documentation for a variety of hair follicle-related skin problems.
Questions About This Page
How many billable codes are in the L73 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 L73 range classify?
The range classifies other follicular disorders. 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.
