Diseases of the skin and subcutaneous tissue (L00–L99)
ICD-10-CM Chapter 12 (L00–L99) covers a wide range of skin and subcutaneous tissue diseases, including infections, inflammatory conditions, and other disorders affecting the skin's outer and deeper layers.
This chapter includes codes for common conditions such as bacterial infections like cellulitis, fungal infections, viral skin diseases, and inflammatory disorders including dermatitis and eczema. It also encompasses codes for more specific problems like bullous disorders, pigmentation changes, and disorders of sweat glands and hair follicles. These codes help healthcare professionals describe and document the various kinds of skin diseases encountered in clinical practice, providing a structured way to indicate the nature, severity, and sometimes the cause of the skin condition. This classification supports accurate diagnosis, treatment planning, and health records management for skin-related illnesses in both outpatient and inpatient settings. Understanding these codes benefits patients and providers by ensuring precise communication about skin health issues and related treatments.
- Infections of the skin and subcutaneous tissue (L00-L08)
- Bullous disorders (L10-L14)
- Dermatitis and eczema (L20-L30)
- Papulosquamous disorders (L40-L45)
- Urticaria and erythema (L49-L54)
- Radiation-related disorders of the skin and subcutaneous tis
- Disorders of skin appendages (L60-L75)
- Intraoperative and postprocedural complications of skin and
- Other disorders of the skin and subcutaneous tissue (L80-L99
Diseases of the skin and subcutaneous tissue (L00–L99)
Excludes2: certain conditions originating in the perinatal period (P04-P96), certain infectious and parasitic diseases (A00-B99), complications of pregnancy, childbirth and the puerperium (O00-O9A), congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99), endocrine, nutritional and metabolic diseases (E00-E88), lipomelanotic reticulosis (I89.8), neoplasms (C00-D49), symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)systemic connective
Infections of the skin and subcutaneous tissue (L00-L08)
Bullous disorders (L10-L14)
Dermatitis and eczema (L20-L30)
- Atopic dermatitis (L20)
- Seborrheic dermatitis (L21)
- Diaper dermatitis (L22)
- Allergic contact dermatitis (L23)
- Irritant contact dermatitis (L24)
- Unspecified contact dermatitis (L25)
- Exfoliative dermatitis (L26)
- Dermatitis due to substances taken internally (L27)
- Lichen simplex chronicus and prurigo (L28)
- Pruritus (L29)
- Other and unspecified dermatitis (L30)
Papulosquamous disorders (L40-L45)
Urticaria and erythema (L49-L54)
Radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
Disorders of skin appendages (L60-L75)
- Nail disorders (L60)
- Nail disorders in diseases classified elsewhere (L62)
- Alopecia areata (L63)
- Androgenic alopecia (L64)
- Other nonscarring hair loss (L65)
- Cicatricial alopecia [scarring hair loss] (L66)
- Hair color and hair shaft abnormalities (L67)
- Hypertrichosis (L68)
- Acne (L70)
- Rosacea (L71)
- Follicular cysts of skin and subcutaneous tissue (L72)
- Other follicular disorders (L73)
- Eccrine sweat disorders (L74)
- Apocrine sweat disorders (L75)
Intraoperative and postprocedural complications of skin and subcutaneous tissue (L76)
- Intraoperative and postprocedural complications of skin and subcutaneous tissue (L76)
Other disorders of the skin and subcutaneous tissue (L80-L99)
- Vitiligo (L80)
- Other disorders of pigmentation (L81)
- Seborrheic keratosis (L82)
- Acanthosis nigricans (L83)
- Corns and callosities (L84)
- Other epidermal thickening (L85)
- Keratoderma in diseases classified elsewhere (L86)
- Transepidermal elimination disorders (L87)
- Pyoderma gangrenosum (L88)
- Pressure ulcer (L89)
- Atrophic disorders of skin (L90)
- Hypertrophic disorders of skin (L91)
- Granulomatous disorders of skin and subcutaneous tissue (L92)
- Lupus erythematosus (L93)
- Other localized connective tissue disorders (L94)
- Vasculitis limited to skin, not elsewhere classified (L95)
- Non-pressure chronic ulcer of lower limb, not elsewhere classified (L97)
- Other disorders of skin and subcutaneous tissue, not elsewhere classified (L98)
- Other disorders of skin and subcutaneous tissue in diseases classified elsewhere (L99)
