S84.91Injury of unspecified nerve at lower leg level, right leg

S84.91 is the ICD-10-CM diagnosis code for injury of unspecified nerve at lower leg level, right 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 S84.9 (injury of unspecified nerve at lower leg level), S84.91 is specifically for injury of unspecified nerve at lower leg level, right leg. Related codes cover unspecified leg (S84.90) and left leg (S84.92).

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.