W28Contact with powered lawn mower

W28 is the ICD-10-CM diagnosis code for contact with powered lawn mower. It belongs to block W20-W49 (exposure to inanimate mechanical forces) 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: W28.XXXA (initial encounter), W28.XXXD (subsequent encounter) and W28.XXXS (sequela).

Don't report W28 together with the conditions in its Excludes1 note: contact with nonpowered lawn mower (W27.1).

The conditions in its Excludes2 note aren't part of W28, but may be coded alongside it if the patient has both: exposure to electric current (W86.-).

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