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
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Internal Codes
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  • L00—

    Staphylococcal scalded skin syndrome

  • L01.00—

    Impetigo, unspecified

  • L01.01—

    Non-bullous impetigo

  • L01.02—

    Bockhart's impetigo

  • L01.03—

    Bullous impetigo

  • L01.09—

    Other impetigo

  • L01.1—

    Impetiginization of other dermatoses

  • L02.01—

    Cutaneous abscess of face

  • L02.02—

    Furuncle of face

  • L02.03—

    Carbuncle of face

  • L02.11—

    Cutaneous abscess of neck

  • L02.12—

    Furuncle of neck

  • L02.13—

    Carbuncle of neck

  • L02.211—

    Cutaneous abscess of abdominal wall

  • L02.212—

    Cutaneous abscess of back [any part, except buttock and flank]

  • L02.213—

    Cutaneous abscess of chest wall

  • L02.214—

    Cutaneous abscess of groin

  • L02.215—

    Cutaneous abscess of perineum

  • L02.216—

    Cutaneous abscess of umbilicus

  • L02.217—

    Cutaneous abscess of flank

  • L02.219—

    Cutaneous abscess of trunk, unspecified

  • L02.221—

    Furuncle of abdominal wall

  • L02.222—

    Furuncle of back [any part, except buttock and flank]

  • L02.223—

    Furuncle of chest wall

  • L02.224—

    Furuncle of groin

  • L02.225—

    Furuncle of perineum

  • L02.226—

    Furuncle of umbilicus

  • L02.227—

    Furuncle of flank

  • L02.229—

    Furuncle of trunk, unspecified

  • L02.231—

    Carbuncle of abdominal wall

  • L02.232—

    Carbuncle of back [any part, except buttock]

  • L02.233—

    Carbuncle of chest wall

  • L02.234—

    Carbuncle of groin

  • L02.235—

    Carbuncle of perineum

  • L02.236—

    Carbuncle of umbilicus

  • L02.239—

    Carbuncle of trunk, unspecified

  • L02.31—

    Cutaneous abscess of buttock

  • L02.32—

    Furuncle of buttock

  • L02.33—

    Carbuncle of buttock

  • 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

  • L02.421—

    Furuncle of right axilla

  • L02.422—

    Furuncle of left axilla

  • L02.423—

    Furuncle of right upper limb

  • L02.424—

    Furuncle of left upper limb

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