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.
Categories beginning with L
Open a category to continue through its complete hierarchy of more specific codes.
L00Staphylococcal scalded skin syndromeL01ImpetigoL02Cutaneous abscess, furuncle and carbuncleL03Cellulitis and acute lymphangitisL04Acute lymphadenitisL05Pilonidal cyst and sinusL08Other local infections of skin and subcutaneous tissueL10PemphigusL11Other acantholytic disordersL12PemphigoidL13Other bullous disordersL14Bullous disorders in diseases classified elsewhereL20Atopic dermatitisL21Seborrheic dermatitisL22Diaper dermatitisL23Allergic contact dermatitisL24Irritant contact dermatitisL25Unspecified contact dermatitisL26Exfoliative dermatitisL27Dermatitis due to substances taken internallyL28Lichen simplex chronicus and prurigoL29PruritusL30Other and unspecified dermatitisL40PsoriasisL41ParapsoriasisL42Pityriasis roseaL43Lichen planusL44Other papulosquamous disordersL45Papulosquamous disorders in diseases classified elsewhereL49Exfoliation due to erythematous conditions according to extent of body surface involvedL50UrticariaL51Erythema multiformeL52Erythema nodosumL53Other erythematous conditionsL54Erythema in diseases classified elsewhereL55SunburnL56Other acute skin changes due to ultraviolet radiationL57Skin changes due to chronic exposure to nonionizing radiationL58RadiodermatitisL59Other disorders of skin and subcutaneous tissue related to radiationL60Nail disordersL62Nail disorders in diseases classified elsewhereL63Alopecia areataL64Androgenic alopeciaL65Other nonscarring hair lossL66Cicatricial alopecia [scarring hair loss]L67Hair color and hair shaft abnormalitiesL68HypertrichosisL70AcneL71RosaceaL72Follicular cysts of skin and subcutaneous tissueL73Other follicular disordersL74Eccrine sweat disordersL75Apocrine sweat disordersL76Intraoperative and postprocedural complications of skin and subcutaneous tissueL80VitiligoL81Other disorders of pigmentationL82Seborrheic keratosisL83Acanthosis nigricansL84Corns and callositiesL85Other epidermal thickeningL86Keratoderma in diseases classified elsewhereL87Transepidermal elimination disordersL88Pyoderma gangrenosumL89Pressure ulcerL90Atrophic disorders of skinL91Hypertrophic disorders of skinL92Granulomatous disorders of skin and subcutaneous tissueL93Lupus erythematosusL94Other localized connective tissue disordersL95Vasculitis limited to skin, not elsewhere classifiedL97Non-pressure chronic ulcer of lower limb, not elsewhere classifiedL98Other disorders of skin and subcutaneous tissue, not elsewhere classifiedL99Other disorders of skin and subcutaneous tissue in diseases classified elsewhereSource and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
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.
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.