ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.1 > S83.11 > S83.111 S83.111 Anterior subluxation of proximal end of tibia, right knee Non-Billable/Non-Specific Codes S83.111A..., initial encounterS83.111D..., subsequent encounterS83.111S..., sequela