S83.8X Sprain of other specified parts of kneeNon-billable header with 3 child codes.
S83.8X1 Sprain of other specified parts of right kneeS83.8X2 Sprain of other specified parts of left kneeS83.8X9 Sprain of other specified parts of unspecified kneeM23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")S86 Injury of muscle, fascia and tendon at lower leg level ("sprain of joints and ligaments of knee (S83.-)")S83.62 Sprain of the superior tibiofibular joint and ligament, left kneeS83.62XA Sprain of the superior tibiofibular joint and ligament, left knee, initial encounterS83.62XD Sprain of the superior tibiofibular joint and ligament, left knee, subsequent encounterS83.62XS Sprain of the superior tibiofibular joint and ligament, left knee, sequelaS83.8 Sprain of other specified parts of kneeS83.8X Sprain of other specified parts of knee (this code)S83.8X1 Sprain of other specified parts of right kneeS83.8X1A Sprain of other specified parts of right knee, initial encounterS83.8X1D Sprain of other specified parts of right knee, subsequent encounterS83.8X1S Sprain of other specified parts of right knee, sequelaS83.8X2 Sprain of other specified parts of left knee