ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.2 > S83.23 > S83.231 S83.231 Complex tear of medial meniscus, current injury, right knee Non-Billable/Non-Specific Codes S83.231A..., initial encounterS83.231D..., subsequent encounterS83.231S..., sequela