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)
  • 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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  • L02.41—

    Cutaneous abscess of limb

  • L02.411—

    Cutaneous abscess of right axilla

  • L02.412—

    Cutaneous abscess of left axilla

  • L02.413—

    Cutaneous abscess of right upper limb

  • L02.414—

    Cutaneous abscess of left upper limb

  • L02.415—

    Cutaneous abscess of right lower limb

  • L02.416—

    Cutaneous abscess of left lower limb

  • L02.419—

    Cutaneous abscess of limb, unspecified

  • L02.42—

    Furuncle of limb

  • L02.421—

    Furuncle of right axilla

  • L02.422—

    Furuncle of left axilla

  • L02.423—

    Furuncle of right upper limb

  • L02.424—

    Furuncle of left upper limb

  • L02.425—

    Furuncle of right lower limb

  • L02.426—

    Furuncle of left lower limb

  • L02.429—

    Furuncle of limb, unspecified

  • L02.43—

    Carbuncle of limb

  • L02.431—

    Carbuncle of right axilla

  • L02.432—

    Carbuncle of left axilla

  • L02.433—

    Carbuncle of right upper limb

  • L02.434—

    Carbuncle of left upper limb

  • L02.435—

    Carbuncle of right lower limb

  • L02.436—

    Carbuncle of left lower limb

  • L02.439—

    Carbuncle of limb, unspecified

  • L02.5—

    Cutaneous abscess, furuncle and carbuncle of hand

  • L02.51—

    Cutaneous abscess of hand

  • L02.511—

    Cutaneous abscess of right hand

  • L02.512—

    Cutaneous abscess of left hand

  • L02.519—

    Cutaneous abscess of unspecified hand

  • L02.52—

    Furuncle hand

  • L02.521—

    Furuncle right hand

  • L02.522—

    Furuncle left hand

  • L02.529—

    Furuncle unspecified hand

  • L02.53—

    Carbuncle of hand

  • L02.531—

    Carbuncle of right hand

  • L02.532—

    Carbuncle of left hand

  • L02.539—

    Carbuncle of unspecified hand

  • L02.6—

    Cutaneous abscess, furuncle and carbuncle of foot

  • L02.61—

    Cutaneous abscess of foot

  • L02.611—

    Cutaneous abscess of right foot

  • L02.612—

    Cutaneous abscess of left foot

  • L02.619—

    Cutaneous abscess of unspecified foot

  • L02.62—

    Furuncle of foot

  • L02.621—

    Furuncle of right foot

  • L02.622—

    Furuncle of left foot

  • L02.629—

    Furuncle of unspecified foot

  • L02.63—

    Carbuncle of foot

  • L02.631—

    Carbuncle of right foot

  • L02.632—

    Carbuncle of left foot

  • L02.639—

    Carbuncle of unspecified foot

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