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2 Minute MedicineICD-10 Lookup

ICD-10-CM code · FY2027

L21 Seborrheic dermatitis

Header codeNot billable: use one of the 4 billable codes below

About L21

Code
L21
Billable
No, header
Short description
Seborrheic dermatitis
Block
L20-L30 Dermatitis and eczema
Chapter
12 Diseases of the skin and subcutaneous tissue
Code set
FY2027, October 1, 2026 to September 30, 2027

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Coding notes for L21

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

  • infective dermatitis (L30.3)
  • seborrheic keratosis (L82.-)
Block L20-L30 notes (apply to every code in it)

Note

  • In this block the terms dermatitis and eczema are used synonymously and interchangeably.

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

  • chronic (childhood) granulomatous disease (D71-)
  • dermatitis gangrenosa (L08.0)
  • dermatitis herpetiformis (L13.0)
  • dry skin dermatitis (L85.3)
  • factitial dermatitis (L98.1)
  • perioral dermatitis (L71.0)
  • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
  • stasis dermatitis (I87.2)
Chapter 12 notes (apply to every code in it)

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

  • 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.-)

Codes under L21 4

Other categories in L20-L30

Latest research on seborrheic dermatitis

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