M22.3 - Other derangements of patella M22 - Disorder of patella M22.3 - Other derangements of patella M22.3X - Other derangements of patella
M22.3X1 - Other derangements of patella, right knee M22.3X2 - Other derangements of patella, left knee M22.3X9 - Other derangements of patella, unspecified knee