S83.41 Sprain of medial collateral ligament of kneeNon-billable header with 3 child codes.
S83.411 Sprain of medial collateral ligament of right kneeS83.412 Sprain of medial collateral ligament of left kneeS83.419 Sprain of medial collateral ligament 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.-)")S83.402S Sprain of unspecified collateral ligament of left knee, sequelaS83.409 Sprain of unspecified collateral ligament of unspecified kneeS83.409A Sprain of unspecified collateral ligament of unspecified knee, initial encounterS83.409D Sprain of unspecified collateral ligament of unspecified knee, subsequent encounterS83.409S Sprain of unspecified collateral ligament of unspecified knee, sequelaS83.41 Sprain of medial collateral ligament of knee (this code)S83.411 Sprain of medial collateral ligament of right kneeS83.411A Sprain of medial collateral ligament of right knee, initial encounterS83.411D Sprain of medial collateral ligament of right knee, subsequent encounterS83.411S Sprain of medial collateral ligament of right knee, sequelaS83.412 Sprain of medial collateral ligament of left knee