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L56.1

Billable

Drug photoallergic response

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

What This Code Means

An allergic skin reaction triggered by a combination of a medication and sunlight exposure.

Coding Tips

  • •Photoallergic reactions are immune-mediated and may recur with minimal sun exposure after sensitization; document the causative medication
  • •This condition is less common than phototoxic reactions but may require avoidance of the medication and strict sun protection

Use Additional Code

  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Code Hierarchy

└L56Other acute skin changes due to ultraviolet radiation└L56.1Drug photoallergic response
└L56.1Drug photoallergic response

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