S31.050Open bite of lower back and pelvis without penetration into retroperitoneum

S31.050 is the ICD-10-CM diagnosis code for open bite of lower back and pelvis without penetration into retroperitoneum. 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 S31.05, choose S31.050 (without penetration into retroperitoneum) only when documentation doesn't support a more specific option: with penetration into retroperitoneum (S31.051).

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.