S09.9Unspecified injury of face and head

S09.9 is the ICD-10-CM diagnosis code for unspecified injury of face and head. It belongs to category S09 (other and unspecified injuries of head), block S00-S09 (injuries to the head) 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 4 subcodes must be used instead.

Within S09, choose S09.9 (Unspecified injury of face and head) only when documentation doesn't support a more specific option: injury of blood vessels of head, not elsewhere classified (S09.0), injury of muscle and tendon of head (S09.1), traumatic rupture of ear drum (S09.2), other specified and unspecified injury of middle and inner ear (S09.3) and other specified injuries of head (S09.8).

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.