S31.839Unspecified open wound of anus

S31.839 is the ICD-10-CM diagnosis code for unspecified open wound of anus. It belongs to category S31 (open wound of abdomen, lower back, pelvis and external genitals), block S30-S39 (injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S31.83, choose S31.839 (Unspecified open wound of anus) only when documentation doesn't support a more specific option: laceration without foreign body of anus (S31.831), laceration with foreign body of anus (S31.832), puncture wound without foreign body of anus (S31.833), puncture wound with foreign body of anus (S31.834) and open bite of anus (S31.835).

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.