S84.809Injury of other nerves at lower leg level, unspecified leg

S84.809 is the ICD-10-CM diagnosis code for injury of other nerves at lower leg level, unspecified leg. It belongs to category S84 (injury of nerves at lower leg level), block S80-S89 (injuries to the knee and lower leg) 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 S84.80, choose S84.809 (unspecified leg) only when documentation doesn't support a more specific option: right leg (S84.801) and left leg (S84.802).

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.