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.-)
Internal Codes
  • L70.5

    Acné excoriée

  • L70.8

    Other acne

  • L70.9

    Acne, unspecified

  • L71.0

    Perioral dermatitis

  • L71.1

    Rhinophyma

  • L71.8

    Other rosacea

  • L71.9

    Rosacea, unspecified

  • L72.0

    Epidermal cyst

  • L72.11

    Pilar cyst

  • L72.12

    Trichodermal cyst

  • L72.2

    Steatocystoma multiplex

  • L72.3

    Sebaceous cyst

  • L72.8

    Other follicular cysts of the skin and subcutaneous tissue

  • L72.9

    Follicular cyst of the skin and subcutaneous tissue, unspecified

  • L73.0

    Acne keloid

  • L73.1

    Pseudofolliculitis barbae

  • L73.2

    Hidradenitis suppurativa

  • L73.8

    Other specified follicular disorders

  • L73.9

    Follicular disorder, unspecified

  • L74.0

    Miliaria rubra

  • L74.1

    Miliaria crystallina

  • L74.2

    Miliaria profunda

  • L74.3

    Miliaria, unspecified

  • L74.4

    Anhidrosis

  • L74.510

    Primary focal hyperhidrosis, axilla

  • L74.511

    Primary focal hyperhidrosis, face

  • L74.512

    Primary focal hyperhidrosis, palms

  • L74.513

    Primary focal hyperhidrosis, soles

  • L74.519

    Primary focal hyperhidrosis, unspecified

  • L74.52

    Secondary focal hyperhidrosis

  • L74.8

    Other eccrine sweat disorders

  • L74.9

    Eccrine sweat disorder, unspecified

  • L75.0

    Bromhidrosis

  • L75.1

    Chromhidrosis

  • L75.2

    Apocrine miliaria

  • L75.8

    Other apocrine sweat disorders

  • L75.9

    Apocrine sweat disorder, unspecified

  • L76.01

    Intraoperative hemorrhage and hematoma of skin and subcutaneous tissue complicating a dermatologic procedure

  • L76.02

    Intraoperative hemorrhage and hematoma of skin and subcutaneous tissue complicating other procedure

  • L76.11

    Accidental puncture and laceration of skin and subcutaneous tissue during a dermatologic procedure

  • L76.12

    Accidental puncture and laceration of skin and subcutaneous tissue during other procedure

  • L76.21

    Postprocedural hemorrhage of skin and subcutaneous tissue following a dermatologic procedure

  • L76.22

    Postprocedural hemorrhage of skin and subcutaneous tissue following other procedure

  • L76.31

    Postprocedural hematoma of skin and subcutaneous tissue following a dermatologic procedure

  • L76.32

    Postprocedural hematoma of skin and subcutaneous tissue following other procedure

  • L76.33

    Postprocedural seroma of skin and subcutaneous tissue following a dermatologic procedure

  • L76.34

    Postprocedural seroma of skin and subcutaneous tissue following other procedure

  • L76.81

    Other intraoperative complications of skin and subcutaneous tissue

  • L76.82

    Other postprocedural complications of skin and subcutaneous tissue

  • L80

    Vitiligo

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