ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.1 > S83.13 > S83.134 S83.134 Medial dislocation of proximal end of tibia, right knee Non-Billable/Non-Specific Codes S83.134A..., initial encounterS83.134D..., subsequent encounterS83.134S..., sequela