All ICD10 Codes
Chapter 12

L00–L99: Diseases of the Skin and Subcutaneous Tissue

Diseases of the Skin and Subcutaneous Tissue diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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 tissue disorders (M30-M36)
  • viral warts (B07.-)
All CodesBillable Only
Internal Codes
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  • L23.4—

    Allergic contact dermatitis due to dyes

  • L23.5—

    Allergic contact dermatitis due to other chemical products

  • L23.6—

    Allergic contact dermatitis due to food in contact with the skin

  • L23.7—

    Allergic contact dermatitis due to plants, except food

  • L23.81—

    Allergic contact dermatitis due to animal (cat) (dog) dander

  • L23.89—

    Allergic contact dermatitis due to other agents

  • L23.9—

    Allergic contact dermatitis, unspecified cause

  • L24.0—

    Irritant contact dermatitis due to detergents

  • L24.1—

    Irritant contact dermatitis due to oils and greases

  • L24.2—

    Irritant contact dermatitis due to solvents

  • L24.3—

    Irritant contact dermatitis due to cosmetics

  • L24.4—

    Irritant contact dermatitis due to drugs in contact with skin

  • L24.5—

    Irritant contact dermatitis due to other chemical products

  • L24.6—

    Irritant contact dermatitis due to food in contact with skin

  • L24.7—

    Irritant contact dermatitis due to plants, except food

  • L24.81—

    Irritant contact dermatitis due to metals

  • L24.89—

    Irritant contact dermatitis due to other agents

  • L24.9—

    Irritant contact dermatitis, unspecified cause

  • L24.A0—

    Irritant contact dermatitis due to friction or contact with body fluids, unspecified

  • L24.A1—

    Irritant contact dermatitis due to saliva

  • L24.A2—

    Irritant contact dermatitis due to fecal, urinary or dual incontinence

  • L24.A9—

    Irritant contact dermatitis due friction or contact with other specified body fluids

  • L24.B0—

    Irritant contact dermatitis related to unspecified stoma or fistula

  • L24.B1—

    Irritant contact dermatitis related to digestive stoma or fistula

  • L24.B2—

    Irritant contact dermatitis related to respiratory stoma or fistula

  • L24.B3—

    Irritant contact dermatitis related to fecal or urinary stoma or fistula

  • L25.0—

    Unspecified contact dermatitis due to cosmetics

  • L25.1—

    Unspecified contact dermatitis due to drugs in contact with skin

  • L25.2—

    Unspecified contact dermatitis due to dyes

  • L25.3—

    Unspecified contact dermatitis due to other chemical products

  • L25.4—

    Unspecified contact dermatitis due to food in contact with skin

  • L25.5—

    Unspecified contact dermatitis due to plants, except food

  • L25.8—

    Unspecified contact dermatitis due to other agents

  • L25.9—

    Unspecified contact dermatitis, unspecified cause

  • L26—

    Exfoliative dermatitis

  • L27.0—

    Generalized skin eruption due to drugs and medicaments taken internally

  • L27.1—

    Localized skin eruption due to drugs and medicaments taken internally

  • L27.2—

    Dermatitis due to ingested food

  • L27.8—

    Dermatitis due to other substances taken internally

  • L27.9—

    Dermatitis due to unspecified substance taken internally

  • L28.0—

    Lichen simplex chronicus

  • L28.1—

    Prurigo nodularis

  • L28.2—

    Other prurigo

  • L29.0—

    Pruritus ani

  • L29.1—

    Pruritus scroti

  • L29.2—

    Pruritus vulvae

  • L29.3—

    Anogenital pruritus, unspecified

  • L29.81—

    Cholestatic pruritus

  • L29.89—

    Other pruritus

  • L29.9—

    Pruritus, unspecified

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