Alphabetic Index FY2027

L50

Urticaria

FY2027Chapter 12: Diseases of the skin and subcutaneous tissue/L49–L54 Urticaria and erythema

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

L50 is a non-billable ICD-10-CM code category for urticaria. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are L50.0 Allergic urticaria, L50.1 Idiopathic urticaria, L50.2 Urticaria due to cold and heat, L50.3 Dermatographic urticaria and 5 more. Its coding notes include 12 Excludes1 entries and 10 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • allergic contact dermatitis (L23.-)
  • angioneurotic edema (T78.3)
  • giant urticaria (T78.3)
  • hereditary angio-edema (D84.1)
  • Quincke's edema (T78.3)
  • serum urticaria (T80.6-)
  • solar urticaria (L56.3)
  • urticaria neonatorum (P83.8)
  • urticaria papulosa (L28.2)
  • urticaria pigmentosa (D47.01)
Also from chapter/block level (2 notes)
Inherited from L49–L54 Urticaria and erythema

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)
Inherited from Chapter 12 Diseases of the skin and subcutaneous tissue
  • 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.-)

More specific codes under L50 9