S88.0 Traumatic amputation at knee levelNon-billable header with 2 child codes.
S78 Traumatic amputation of hip and thigh ("traumatic amputation of knee (S88.0-)")S78.1 Traumatic amputation at level between hip and knee ("traumatic amputation of knee (S88.0-)")M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")S81 Open wound of knee and lower leg ("traumatic amputation of lower leg (S88.-)")S82 Fracture of lower leg, including ankle ("traumatic amputation of lower leg (S88.-)")S88 Traumatic amputation of lower legS88.0 Traumatic amputation at knee level (this code)S88.01 Complete traumatic amputation at knee levelS88.011 Complete traumatic amputation at knee level, right lower legS88.011A Complete traumatic amputation at knee level, right lower leg, initial encounterS88.011D Complete traumatic amputation at knee level, right lower leg, subsequent encounterS88.011S Complete traumatic amputation at knee level, right lower leg, sequela