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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  • L98.A394—

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

  • L98.A395—

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

  • L98.A396—

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

  • L98.A398—

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

  • L98.A399—

    Non-pressure chronic ulcer of unspecified hand with unspecified severity

  • L99—

    Other disorders of skin and subcutaneous tissue in diseases classified elsewhere

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