S21.95Open bite of unspecified part of thorax

S21.95 is the ICD-10-CM diagnosis code for open bite of unspecified part of thorax. It belongs to category S21 (open wound of thorax), block S20-S29 (injuries to the thorax) 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 S21.9, choose S21.95 (Open bite of unspecified part of thorax) only when documentation doesn't support a more specific option: unspecified open wound of unspecified part of thorax (S21.90), laceration without foreign body of unspecified part of thorax (S21.91), laceration with foreign body of unspecified part of thorax (S21.92), puncture wound without foreign body of unspecified part of thorax (S21.93) and puncture wound with foreign body of unspecified part of thorax (S21.94).

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 S21.95 together with the conditions in its Excludes1 note: superficial bite of thorax (S20.97).

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