ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.0 > S83.01 > S83.013 S83.013 Lateral subluxation of unspecified patella Non-Billable/Non-Specific Codes S83.013A..., initial encounterS83.013D..., subsequent encounterS83.013S..., sequela