Internal derangement of knee Excludes1ankylosis (M24.66)deformity of knee (M21.-)osteochondritis dissecans (M93.2)Excludes2current injury - see injury of knee and lower leg (S80-S89)recurrent dislocation or subluxation of joints (M24.4)recurrent dislocation or subluxation of patella (M22.0-M22.1)