S31.55Open bite of unspecified external genital organs

S31.55 is the ICD-10-CM diagnosis code for open bite of unspecified external genital organs. 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 2 subcodes must be used instead.

Within S31.5, choose S31.55 (Open bite of unspecified external genital organs) only when documentation doesn't support a more specific option: unspecified open wound of unspecified external genital organs (S31.50), laceration without foreign body of unspecified external genital organs (S31.51), laceration with foreign body of unspecified external genital organs (S31.52), puncture wound without foreign body of unspecified external genital organs (S31.53) and puncture wound with foreign body of unspecified external genital organs (S31.54).

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.

Don't report S31.55 together with the conditions in its Excludes1 note: superficial bite of unspecified external genital organs (S30.865, S30.866, S30.875, S30.876).

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