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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  • L89.95—

    Pressure ulcer of unspecified site, unstageable

  • L89.96—

    Pressure-induced deep tissue damage of unspecified site

  • L90.0—

    Lichen sclerosus et atrophicus

  • L90.1—

    Anetoderma of Schweninger-Buzzi

  • L90.2—

    Anetoderma of Jadassohn-Pellizzari

  • L90.3—

    Atrophoderma of Pasini and Pierini

  • L90.4—

    Acrodermatitis chronica atrophicans

  • L90.5—

    Scar conditions and fibrosis of skin

  • L90.6—

    Striae atrophicae

  • L90.8—

    Other atrophic disorders of skin

  • L90.9—

    Atrophic disorder of skin, unspecified

  • L91.0—

    Hypertrophic scar

  • L91.8—

    Other hypertrophic disorders of the skin

  • L91.9—

    Hypertrophic disorder of the skin, unspecified

  • L92.0—

    Granuloma annulare

  • L92.1—

    Necrobiosis lipoidica, not elsewhere classified

  • L92.2—

    Granuloma faciale [eosinophilic granuloma of skin]

  • L92.3—

    Foreign body granuloma of the skin and subcutaneous tissue

  • L92.8—

    Other granulomatous disorders of the skin and subcutaneous tissue

  • L92.9—

    Granulomatous disorder of the skin and subcutaneous tissue, unspecified

  • L93.0—

    Discoid lupus erythematosus

  • L93.1—

    Subacute cutaneous lupus erythematosus

  • L93.2—

    Other local lupus erythematosus

  • L94.0—

    Localized scleroderma [morphea]

  • L94.1—

    Linear scleroderma

  • L94.2—

    Calcinosis cutis

  • L94.3—

    Sclerodactyly

  • L94.4—

    Gottron's papules

  • L94.5—

    Poikiloderma vasculare atrophicans

  • L94.6—

    Ainhum

  • L94.8—

    Other specified localized connective tissue disorders

  • L94.9—

    Localized connective tissue disorder, unspecified

  • L95.0—

    Livedoid vasculitis

  • L95.1—

    Erythema elevatum diutinum

  • L95.8—

    Other vasculitis limited to the skin

  • L95.9—

    Vasculitis limited to the skin, unspecified

  • L97.101—

    Non-pressure chronic ulcer of unspecified thigh limited to breakdown of skin

  • L97.102—

    Non-pressure chronic ulcer of unspecified thigh with fat layer exposed

  • L97.103—

    Non-pressure chronic ulcer of unspecified thigh with necrosis of muscle

  • L97.104—

    Non-pressure chronic ulcer of unspecified thigh with necrosis of bone

  • L97.105—

    Non-pressure chronic ulcer of unspecified thigh with muscle involvement without evidence of necrosis

  • L97.106—

    Non-pressure chronic ulcer of unspecified thigh with bone involvement without evidence of necrosis

  • L97.108—

    Non-pressure chronic ulcer of unspecified thigh with other specified severity

  • L97.109—

    Non-pressure chronic ulcer of unspecified thigh with unspecified severity

  • L97.111—

    Non-pressure chronic ulcer of right thigh limited to breakdown of skin

  • L97.112—

    Non-pressure chronic ulcer of right thigh with fat layer exposed

  • L97.113—

    Non-pressure chronic ulcer of right thigh with necrosis of muscle

  • L97.114—

    Non-pressure chronic ulcer of right thigh with necrosis of bone

  • L97.115—

    Non-pressure chronic ulcer of right thigh with muscle involvement without evidence of necrosis

  • L97.116—

    Non-pressure chronic ulcer of right thigh with bone involvement without evidence of necrosis

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