W13.3Fall through floor

W13.3 is the ICD-10-CM diagnosis code for fall through floor. It belongs to category W13 (fall from, out of or through building or structure), block W00-W19 (slipping, tripping, stumbling and falls) 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.

Within W13 (fall from, out of or through building or structure), W13.3 is specifically for fall through floor. Related codes cover from, out of or through balcony (W13.0), from, out of or through bridge (W13.1), from, out of or through roof (W13.2), from, out of or through window (W13.4), from, out of or through other building or structure (W13.8) and from, out of or through building, not otherwise specified (W13.9).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

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