L ICD-10-CM Categories: Category Index
Browse 74 top-level ICD-10-CM categories beginning with L, then follow their complete FY 2027 child-code hierarchies.
Complete category list
Categories beginning with L
Open a category to continue through its complete hierarchy of more specific codes.
L00Staphylococcal scalded skin syndrome
L01Impetigo
L02Cutaneous abscess, furuncle and carbuncle
L03Cellulitis and acute lymphangitis
L04Acute lymphadenitis
L05Pilonidal cyst and sinus
L08Other local infections of skin and subcutaneous tissue
L10Pemphigus
L11Other acantholytic disorders
L12Pemphigoid
L13Other bullous disorders
L14Bullous disorders in diseases classified elsewhere
L20Atopic dermatitis
L21Seborrheic dermatitis
L22Diaper dermatitis
L23Allergic contact dermatitis
L24Irritant contact dermatitis
L25Unspecified contact dermatitis
L26Exfoliative dermatitis
L27Dermatitis due to substances taken internally
L28Lichen simplex chronicus and prurigo
L29Pruritus
L30Other and unspecified dermatitis
L40Psoriasis
L41Parapsoriasis
L42Pityriasis rosea
L43Lichen planus
L44Other papulosquamous disorders
L45Papulosquamous disorders in diseases classified elsewhere
L49Exfoliation due to erythematous conditions according to extent of body surface involved
L50Urticaria
L51Erythema multiforme
L52Erythema nodosum
L53Other erythematous conditions
L54Erythema in diseases classified elsewhere
L55Sunburn
L56Other acute skin changes due to ultraviolet radiation
L57Skin changes due to chronic exposure to nonionizing radiation
L58Radiodermatitis
L59Other disorders of skin and subcutaneous tissue related to radiation
L60Nail disorders
L62Nail disorders in diseases classified elsewhere
L63Alopecia areata
L64Androgenic alopecia
L65Other nonscarring hair loss
L66Cicatricial alopecia [scarring hair loss]
L67Hair color and hair shaft abnormalities
L68Hypertrichosis
L70Acne
L71Rosacea
L72Follicular cysts of skin and subcutaneous tissue
L73Other follicular disorders
L74Eccrine sweat disorders
L75Apocrine sweat disorders
L76Intraoperative and postprocedural complications of skin and subcutaneous tissue
L80Vitiligo
L81Other disorders of pigmentation
L82Seborrheic keratosis
L83Acanthosis nigricans
L84Corns and callosities
L85Other epidermal thickening
L86Keratoderma in diseases classified elsewhere
L87Transepidermal elimination disorders
L88Pyoderma gangrenosum
L89Pressure ulcer
L90Atrophic disorders of skin
L91Hypertrophic disorders of skin
L92Granulomatous disorders of skin and subcutaneous tissue
L93Lupus erythematosus
L94Other localized connective tissue disorders
L95Vasculitis limited to skin, not elsewhere classified
L97Non-pressure chronic ulcer of lower limb, not elsewhere classified
L98Other disorders of skin and subcutaneous tissue, not elsewhere classified
L99Other disorders of skin and subcutaneous tissue in diseases classified elsewhere
Transparency
Source and release
This category index is generated from Vero’s repository-backed ICD-10-CM hierarchy. Every listed category is a top-level record, and each linked category page exposes its direct child codes.
Review the CDC/NCHS ICD-10-CM sourceCategory navigation
Frequently asked questions
Which ICD-10-CM categories begin with L?
This index lists 74 top-level categories beginning with L from Vero’s FY 2027 U.S. ICD-10-CM reference dataset.
How do I find a more specific L code?
Open a category below, then follow its linked child-code hierarchy until you reach the code supported by the documentation.
Which ICD-10-CM release does this L index use?
The index uses the FY 2027 U.S. ICD-10-CM release and the repository-backed hierarchy displayed on each linked code page.
Is every L category billable?
No. These are top-level categories used for navigation. Follow the hierarchy to a sufficiently specific code and confirm the active code set, official guidance, and payer requirements.
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