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    v1.0.30
    OpenPayerBilling CodesDisorders of skin appendagesICD-10-CM l73-other-follicular-disorders
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    ICD-10-CM Code For Other Follicular Disorders: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group L73 includes follicular inflammatory disorders and related conditions such as perifolliculitis, dissecting cellulitis of the scalp, and other specified follicular diseases that affect hair follicles and surrounding skin. These ICD-10-CM diagnosis codes are used to document clinical presentations including localized follicular inflammation, pustular eruptions, scarring alopecia, or recurrent follicular infections, capturing disease severity and anatomic involvement. Accurate coding within the ICD-10-CM L73 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM L73: Other Follicular Disorders Overview

    The ICD-10-CM L73 group covers disorders affecting hair follicles and related appendage structures of the skin, such as perifolliculitis and other follicular inflammations. These conditions target the integumentary system and commonly present with papules, pustules, or scarring related to follicular damage. Accurate coding matters for reimbursement because it ensures claims reflect the specific diagnosis and clinical complexity of follicular disorders, supporting appropriate claim adjudication.

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    When to Use

    Use a code from this group when the primary diagnosis is a follicular disorder such as perifolliculitis, dissecting cellulitis of the scalp, or other specified follicular conditions documented by the clinician. Select the most specific code that captures anatomic site, presence of scarring or abscess formation, and whether the condition is recurrent or chronic.

    ICD-10-CM Codes

    5 rows

    ICD-10-CM CodeDescription
    L73.0Acne keloid
    L73.1Pseudofolliculitis barbae
    L73.2Hidradenitis suppurativa
    L73.8Other specified follicular disorders
    L73.9Follicular disorder, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    606Minor Skin Disorders with MCC
    607Minor Skin Disorders without MCC

    Typical Clinical Scenarios

    • A young adult presents to dermatology with a 6-month history of clustered, dome-shaped, flesh-colored to yellow papules on the cheeks and forehead that intermittently inflame and discharge oily material; prior topical acne treatments were ineffective and the clinician diagnoses multiple eruptive milia-like cysts consistent with steatocystoma multiplex, a chronic adnexal disorder requiring dermatologic evaluation. Typical codes: L73.0, L73.9
    • An adolescent comes to urgent care with sudden painful, inflamed nodules and sinus tract formation in the axillae and groin, accompanied by fever and limited mobility; examination supports hidradenitis suppurativa with acute exacerbation and secondary infection, prompting incision and drainage and systemic therapy considerations — a code from the group for follicular occlusion disorders is assigned. Typical codes: L73.1, L73.8
    • A middle-aged patient with long-standing lichen planopilaris presents in dermatology clinic for progressive scarring alopecia with perifollicular erythema and hair loss on the vertex; the chronic scarring follicular disorder is documented to guide ongoing management and monitoring for permanent hair loss. Typical codes: L73.2, L73.9

    Related Codes

    L60-NAIL-DISORDERS

    ICD-10-CM Code For Nail Disorders: Group Overview

    L62-NAIL-DISORDERS-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Nail Disorders In Diseases Classified Elsewhere: Group Overview

    L63-ALOPECIA-AREATA

    ICD-10-CM Code For Alopecia Areata: Group Overview

    L64-ANDROGENIC-ALOPECIA

    ICD-10-CM Code For Androgenic Alopecia: Group Overview

    L65-OTHER-NONSCARRING-HAIR-LOSS

    ICD-10-CM Code For Other Nonscarring Hair Loss: Group Overview

    L66-CICATRICIAL-ALOPECIA-SCARRING-HAIR-LOSS

    ICD-10-CM Code For Cicatricial Alopecia Scarring Hair Loss: Group Overview

    L67-HAIR-COLOR-AND-HAIR-SHAFT-ABNORMALITIES

    ICD-10-CM Code For Hair Color And Hair Shaft Abnormalities: Group Overview

    L68-HYPERTRICHOSIS

    ICD-10-CM Code For Hypertrichosis: Group Overview

    L70-ACNE

    ICD-10-CM Code For Acne: Group Overview

    L71-ROSACEA

    ICD-10-CM Code For Rosacea: Group Overview

    Showing 1–10 of 13

    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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