Chapter 12
Diseases of the skin and subcutaneous tissue
L00–L99
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FY 2027 effective October 1, 2026 · 74 categories in this chapter
Blocks in This Chapter
ICD-10-CM groups this chapter's categories into 9 blocks of three-character categories.
- L00 –L08 Infections of the skin and subcutaneous tissue
- L10 –L14 Bullous disorders
- L20 –L30 Dermatitis and eczema
- L40 –L45 Papulosquamous disorders
- L49 –L54 Urticaria and erythema
- L55 –L59 Radiation-related disorders of the skin and subcutaneous tissue
- L60 –L75 Disorders of skin appendages
- L76 Intraoperative and postprocedural complications of skin and subcutaneous tissue
- L80 –L99 Other disorders of the skin and subcutaneous tissue
Categories
Infections of the skin and subcutaneous tissue (L00-L08)
- L00 Staphylococcal scalded skin syndrome
- L01 Impetigo Has subcategories
- L02 Cutaneous abscess, furuncle and carbuncle Has subcategories
- L03 Cellulitis and acute lymphangitis Has subcategories
- L04 Acute lymphadenitis Has subcategories
- L05 Pilonidal cyst and sinus Has subcategories
- L08 Other local infections of skin and subcutaneous tissue Has subcategories
Bullous disorders (L10-L14)
Dermatitis and eczema (L20-L30)
- L20 Atopic dermatitis Has subcategories
- L21 Seborrheic dermatitis Has subcategories
- L22 Diaper dermatitis
- L23 Allergic contact dermatitis Has subcategories
- L24 Irritant contact dermatitis Has subcategories
- L25 Unspecified contact dermatitis Has subcategories
- L26 Exfoliative dermatitis
- L27 Dermatitis due to substances taken internally Has subcategories
- L28 Lichen simplex chronicus and prurigo Has subcategories
- L29 Pruritus Has subcategories
- L30 Other and unspecified dermatitis Has subcategories
Papulosquamous disorders (L40-L45)
Urticaria and erythema (L49-L54)
- L49 Exfoliation due to erythematous conditions according to extent of body surface involved Has subcategories
- L50 Urticaria Has subcategories
- L51 Erythema multiforme Has subcategories
- L52 Erythema nodosum
- L53 Other erythematous conditions Has subcategories
- L54 Erythema in diseases classified elsewhere
Radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
- L55 Sunburn Has subcategories
- L56 Other acute skin changes due to ultraviolet radiation Has subcategories
- L57 Skin changes due to chronic exposure to nonionizing radiation Has subcategories
- L58 Radiodermatitis Has subcategories
- L59 Other disorders of skin and subcutaneous tissue related to radiation Has subcategories
Disorders of skin appendages (L60-L75)
- L60 Nail disorders Has subcategories
- L62 Nail disorders in diseases classified elsewhere
- L63 Alopecia areata Has subcategories
- L64 Androgenic alopecia Has subcategories
- L65 Other nonscarring hair loss Has subcategories
- L66 Cicatricial alopecia [scarring hair loss] Has subcategories
- L67 Hair color and hair shaft abnormalities Has subcategories
- L68 Hypertrichosis Has subcategories
- L70 Acne Has subcategories
- L71 Rosacea Has subcategories
- L72 Follicular cysts of skin and subcutaneous tissue Has subcategories
- L73 Other follicular disorders Has subcategories
- L74 Eccrine sweat disorders Has subcategories
- L75 Apocrine sweat disorders Has subcategories
Intraoperative and postprocedural complications of skin and subcutaneous tissue (L76)
Other disorders of the skin and subcutaneous tissue (L80-L99)
- L80 Vitiligo
- L81 Other disorders of pigmentation Has subcategories
- L82 Seborrheic keratosis Has subcategories
- L83 Acanthosis nigricans
- L84 Corns and callosities
- L85 Other epidermal thickening Has subcategories
- L86 Keratoderma in diseases classified elsewhere
- L87 Transepidermal elimination disorders Has subcategories
- L88 Pyoderma gangrenosum
- L89 Pressure ulcer Has subcategories
- L90 Atrophic disorders of skin Has subcategories
- L91 Hypertrophic disorders of skin Has subcategories
- L92 Granulomatous disorders of skin and subcutaneous tissue Has subcategories
- L93 Lupus erythematosus Has subcategories
- L94 Other localized connective tissue disorders Has subcategories
- L95 Vasculitis limited to skin, not elsewhere classified Has subcategories
- L97 Non-pressure chronic ulcer of lower limb, not elsewhere classified Has subcategories
- L98 Other disorders of skin and subcutaneous tissue, not elsewhere classified Has subcategories
- L99 Other disorders of skin and subcutaneous tissue in diseases classified elsewhere