In simple words: This code is used when someone has a medical problem because of being in the sun for too long.It's for the first time that problem is seen by a doctor.The doctor will also use a code to explain what the exact problem is (like a sunburn).

This ICD-10-CM code classifies the initial encounter resulting from exposure to sunlight.It is used to document the event of sun exposure that led to a medical condition.This code should be used in conjunction with a code from another chapter specifying the nature of the resulting condition (e.g., sunburn, heatstroke).

Example 1: A patient presents to the emergency department with severe sunburn after spending several hours at the beach without sunscreen., A patient develops heatstroke after prolonged exposure to direct sunlight during a marathon., A patient seeks medical attention for photosensitivity reaction after sun exposure while on medication known to increase sun sensitivity.

Detailed description of the sun exposure event (duration, intensity, protective measures taken), nature and severity of the resulting condition, relevant physical examination findings, diagnostic test results (if any).

** Excludes man-made radiation (tanning bed) (W89) and radiation-related disorders of the skin and subcutaneous tissue (L55-L59).