ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.1 > S83.14 > S83.143 S83.143 Lateral subluxation of proximal end of tibia, unspecified knee Non-Billable/Non-Specific Codes S83.143A..., initial encounterS83.143D..., subsequent encounterS83.143S..., sequela