ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.1 > S83.11 > S83.115 S83.115 Anterior dislocation of proximal end of tibia, left knee Non-Billable/Non-Specific Codes S83.115A..., initial encounterS83.115D..., subsequent encounterS83.115S..., sequela