S88.129Partial traumatic amputation at level between knee and ankle, unspecified lower leg

S88.129 is the ICD-10-CM diagnosis code for partial traumatic amputation at level between knee and ankle, unspecified lower leg. It belongs to category S88 (traumatic amputation of lower leg), 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 S88.12, choose S88.129 (unspecified lower leg) only when documentation doesn't support a more specific option: right lower leg (S88.121) and left lower leg (S88.122).

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.