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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  • L03.21—

    Cellulitis and acute lymphangitis of face

  • L03.211—

    Cellulitis of face

  • L03.212—

    Acute lymphangitis of face

  • L03.213—

    Periorbital cellulitis

  • L03.22—

    Cellulitis and acute lymphangitis of neck

  • L03.221—

    Cellulitis of neck

  • L03.222—

    Acute lymphangitis of neck

  • L03.3—

    Cellulitis and acute lymphangitis of trunk

  • L03.31—

    Cellulitis of trunk

  • L03.311—

    Cellulitis of abdominal wall

  • L03.312—

    Cellulitis of back [any part except buttock]

  • L03.313—

    Cellulitis of chest wall

  • L03.314—

    Cellulitis of groin

  • L03.315—

    Cellulitis of perineum

  • L03.316—

    Cellulitis of umbilicus

  • L03.317—

    Cellulitis of buttock

  • L03.319—

    Cellulitis of trunk, unspecified

  • L03.31A—

    Cellulitis of flank

  • L03.32—

    Acute lymphangitis of trunk

  • L03.321—

    Acute lymphangitis of abdominal wall

  • L03.322—

    Acute lymphangitis of back [any part except buttock]

  • L03.323—

    Acute lymphangitis of chest wall

  • L03.324—

    Acute lymphangitis of groin

  • L03.325—

    Acute lymphangitis of perineum

  • L03.326—

    Acute lymphangitis of umbilicus

  • L03.327—

    Acute lymphangitis of buttock

  • L03.329—

    Acute lymphangitis of trunk, unspecified

  • L03.32A—

    Acute lymphangitis of flank

  • L03.8—

    Cellulitis and acute lymphangitis of other sites

  • L03.81—

    Cellulitis of other sites

  • L03.811—

    Cellulitis of head [any part, except face]

  • L03.818—

    Cellulitis of other sites

  • L03.89—

    Acute lymphangitis of other sites

  • L03.891—

    Acute lymphangitis of head [any part, except face]

  • L03.898—

    Acute lymphangitis of other sites

  • L03.9—

    Cellulitis and acute lymphangitis, unspecified

  • L03.90—

    Cellulitis, unspecified

  • L03.91—

    Acute lymphangitis, unspecified

  • L04—

    Acute lymphadenitis

  • L04.0—

    Acute lymphadenitis of face, head and neck

  • L04.1—

    Acute lymphadenitis of trunk

  • L04.2—

    Acute lymphadenitis of upper limb

  • L04.3—

    Acute lymphadenitis of lower limb

  • L04.8—

    Acute lymphadenitis of other sites

  • L04.9—

    Acute lymphadenitis, unspecified

  • L05—

    Pilonidal cyst and sinus

  • L05.0—

    Pilonidal cyst and sinus with abscess

  • L05.01—

    Pilonidal cyst with abscess

  • L05.02—

    Pilonidal sinus with abscess

  • L05.9—

    Pilonidal cyst and sinus without abscess

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