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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  • L97.523—

    Non-pressure chronic ulcer of other part of left foot with necrosis of muscle

  • L97.524—

    Non-pressure chronic ulcer of other part of left foot with necrosis of bone

  • L97.525—

    Non-pressure chronic ulcer of other part of left foot with muscle involvement without evidence of necrosis

  • L97.526—

    Non-pressure chronic ulcer of other part of left foot with bone involvement without evidence of necrosis

  • L97.528—

    Non-pressure chronic ulcer of other part of left foot with other specified severity

  • L97.529—

    Non-pressure chronic ulcer of other part of left foot with unspecified severity

  • L97.801—

    Non-pressure chronic ulcer of other part of unspecified lower leg limited to breakdown of skin

  • L97.802—

    Non-pressure chronic ulcer of other part of unspecified lower leg with fat layer exposed

  • L97.803—

    Non-pressure chronic ulcer of other part of unspecified lower leg with necrosis of muscle

  • L97.804—

    Non-pressure chronic ulcer of other part of unspecified lower leg with necrosis of bone

  • L97.805—

    Non-pressure chronic ulcer of other part of unspecified lower leg with muscle involvement without evidence of necrosis

  • L97.806—

    Non-pressure chronic ulcer of other part of unspecified lower leg with bone involvement without evidence of necrosis

  • L97.808—

    Non-pressure chronic ulcer of other part of unspecified lower leg with other specified severity

  • L97.809—

    Non-pressure chronic ulcer of other part of unspecified lower leg with unspecified severity

  • L97.811—

    Non-pressure chronic ulcer of other part of right lower leg limited to breakdown of skin

  • L97.812—

    Non-pressure chronic ulcer of other part of right lower leg with fat layer exposed

  • L97.813—

    Non-pressure chronic ulcer of other part of right lower leg with necrosis of muscle

  • L97.814—

    Non-pressure chronic ulcer of other part of right lower leg with necrosis of bone

  • L97.815—

    Non-pressure chronic ulcer of other part of right lower leg with muscle involvement without evidence of necrosis

  • L97.816—

    Non-pressure chronic ulcer of other part of right lower leg with bone involvement without evidence of necrosis

  • L97.818—

    Non-pressure chronic ulcer of other part of right lower leg with other specified severity

  • L97.819—

    Non-pressure chronic ulcer of other part of right lower leg with unspecified severity

  • L97.821—

    Non-pressure chronic ulcer of other part of left lower leg limited to breakdown of skin

  • L97.822—

    Non-pressure chronic ulcer of other part of left lower leg with fat layer exposed

  • L97.823—

    Non-pressure chronic ulcer of other part of left lower leg with necrosis of muscle

  • L97.824—

    Non-pressure chronic ulcer of other part of left lower leg with necrosis of bone

  • L97.825—

    Non-pressure chronic ulcer of other part of left lower leg with muscle involvement without evidence of necrosis

  • L97.826—

    Non-pressure chronic ulcer of other part of left lower leg with bone involvement without evidence of necrosis

  • L97.828—

    Non-pressure chronic ulcer of other part of left lower leg with other specified severity

  • L97.829—

    Non-pressure chronic ulcer of other part of left lower leg with unspecified severity

  • L97.901—

    Non-pressure chronic ulcer of unspecified part of unspecified lower leg limited to breakdown of skin

  • L97.902—

    Non-pressure chronic ulcer of unspecified part of unspecified lower leg with fat layer exposed

  • L97.903—

    Non-pressure chronic ulcer of unspecified part of unspecified lower leg with necrosis of muscle

  • L97.904—

    Non-pressure chronic ulcer of unspecified part of unspecified lower leg with necrosis of bone

  • L97.905—

    Non-pressure chronic ulcer of unspecified part of unspecified lower leg with muscle involvement without evidence of necrosis

  • L97.906—

    Non-pressure chronic ulcer of unspecified part of unspecified lower leg with bone involvement without evidence of necrosis

  • L97.908—

    Non-pressure chronic ulcer of unspecified part of unspecified lower leg with other specified severity

  • L97.909—

    Non-pressure chronic ulcer of unspecified part of unspecified lower leg with unspecified severity

  • L97.911—

    Non-pressure chronic ulcer of unspecified part of right lower leg limited to breakdown of skin

  • L97.912—

    Non-pressure chronic ulcer of unspecified part of right lower leg with fat layer exposed

  • L97.913—

    Non-pressure chronic ulcer of unspecified part of right lower leg with necrosis of muscle

  • L97.914—

    Non-pressure chronic ulcer of unspecified part of right lower leg with necrosis of bone

  • L97.915—

    Non-pressure chronic ulcer of unspecified part of right lower leg with muscle involvement without evidence of necrosis

  • L97.916—

    Non-pressure chronic ulcer of unspecified part of right lower leg with bone involvement without evidence of necrosis

  • L97.918—

    Non-pressure chronic ulcer of unspecified part of right lower leg with other specified severity

  • L97.919—

    Non-pressure chronic ulcer of unspecified part of right lower leg with unspecified severity

  • L97.921—

    Non-pressure chronic ulcer of unspecified part of left lower leg limited to breakdown of skin

  • L97.922—

    Non-pressure chronic ulcer of unspecified part of left lower leg with fat layer exposed

  • L97.923—

    Non-pressure chronic ulcer of unspecified part of left lower leg with necrosis of muscle

  • L97.924—

    Non-pressure chronic ulcer of unspecified part of left lower leg with necrosis of bone

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