L50.1

Idiopathic urticaria

Billable / specific

L50.1 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Excludes1

Not coded here — never report together with this code.

Lyme disease (A69.2-) (from L50)
rosacea (L71.-) (from L50)
allergic contact dermatitis (L23.-) (from L50)
angioneurotic edema (T78.3) (from L50)
giant urticaria (T78.3) (from L50)
hereditary angio-edema (D84.1) (from L50)
Quincke's edema (T78.3) (from L50)
serum urticaria (T80.6-) (from L50)
solar urticaria (L56.3) (from L50)
urticaria neonatorum (P83.8) (from L50)
urticaria papulosa (L28.2) (from L50)
urticaria pigmentosa (D47.01) (from L50)

Not included here — may be reported together when both conditions exist.

certain conditions originating in the perinatal period (P04-P96) (from L50)
certain infectious and parasitic diseases (A00-B99) (from L50)
complications of pregnancy, childbirth and the puerperium (O00-O9A) (from L50)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from L50)
endocrine, nutritional and metabolic diseases (E00-E88) (from L50)
lipomelanotic reticulosis (I89.8) (from L50)
neoplasms (C00-D49) (from L50)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from L50)
systemic connective tissue disorders (M30-M36) (from L50)
viral warts (B07.-) (from L50)