ICD-10-CM 2027
ICD-10 code for solar urticaria
From the official ICD-10-CM alphabetic index entry “Urticaria › solar”. Page updated September 29, 2026.
About coding solar urticaria
The ICD-10-CM code for solar urticaria is L56.3 (Solar urticaria).
Within L56 (other acute skin changes due to ultraviolet radiation), L56.3 is specifically for solar urticaria. Related codes cover drug phototoxic response (L56.0), drug photoallergic response (L56.1), Photocontact dermatitis [berloque dermatitis] (L56.2), Polymorphous light eruption (L56.4), disseminated superficial actinic porokeratosis (DSAP) (L56.5), other specified acute skin changes due to ultraviolet radiation (L56.8) and acute skin change due to ultraviolet radiation, unspecified (L56.9).
Use an additional code to identify the source of the ultraviolet radiation (W89, X32).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about solar urticaria ICD-10 codes
What is the ICD-10 code for solar urticaria?
- L56.3 — Solar urticaria.
Is L56.3 billable?
- Yes. L56.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L56.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L56.3 as a principal diagnosis.
Is L56.3 a CC or MCC?
- No. L56.3 is neither a CC nor an MCC under MS-DRG v44.0.