ICD-10-CM 2027
ICD-10 code for thermal urticaria
From the official ICD-10-CM alphabetic index entry “Urticaria › thermal (cold) (heat)”. Page updated September 29, 2026.
About coding thermal urticaria
The ICD-10-CM code for thermal urticaria is L50.2 (Urticaria due to cold and heat).
Within L50 (urticaria), L50.2 is specifically for urticaria due to cold and heat. Related codes cover allergic urticaria (L50.0), idiopathic urticaria (L50.1), Dermatographic urticaria (L50.3), Vibratory urticaria (L50.4), Cholinergic urticaria (L50.5), contact urticaria (L50.6), other urticaria (L50.8) and unspecified (L50.9).
The conditions in its Excludes2 note aren't part of L50.2, but may be coded alongside it if the patient has both: familial cold urticaria (M04.2).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about thermal urticaria ICD-10 codes
What is the ICD-10 code for thermal urticaria?
- L50.2 — Urticaria due to cold and heat.
Is L50.2 billable?
- Yes. L50.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L50.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L50.2 as a principal diagnosis.
Is L50.2 a CC or MCC?
- No. L50.2 is neither a CC nor an MCC under MS-DRG v44.0.