X32Exposure to sunlight

X32 is the ICD-10-CM diagnosis code for exposure to sunlight. It belongs to block X30-X39 (exposure to forces of nature) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: X32.XXXA (initial encounter), X32.XXXD (subsequent encounter) and X32.XXXS (sequela).

Don't report X32 together with the conditions in its Excludes1 note: man-made radiation (tanning bed) (W89).

The conditions in its Excludes2 note aren't part of X32, but may be coded alongside it if the patient has both: radiation-related disorders of the skin and subcutaneous tissue (L55-L59).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.