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L50.1

Billable

Idiopathic urticaria

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Itchy, raised welts on the skin that occur without a clearly identified cause or allergen trigger.

Coding Tips

  • •Use this code when the cause of urticaria cannot be determined despite investigation; document any testing performed
  • •Distinguish from allergic urticaria by confirming no specific allergen has been identified

Code Hierarchy

└L50Urticaria└L50.1Idiopathic urticaria
└L50.1Idiopathic urticaria

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