S80.1 Contusion of lower legNon-billable header with 3 child codes.
S80.10 Contusion of unspecified lower legS80.11 Contusion of right lower legS80.12 Contusion of left lower legM23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")S80.01XS Contusion of right knee, sequelaS80.02 Contusion of left kneeS80.02XA Contusion of left knee, initial encounterS80.02XD Contusion of left knee, subsequent encounterS80.02XS Contusion of left knee, sequelaS80.1 Contusion of lower leg (this code)S80.10 Contusion of unspecified lower legS80.10XA Contusion of unspecified lower leg, initial encounterS80.10XD Contusion of unspecified lower leg, subsequent encounterS80.10XS Contusion of unspecified lower leg, sequelaS80.11 Contusion of right lower leg