ICD-10-CM > M00-M99 > M20-M25 > M22 M22 Disorder of patella Non-Billable/Non-Specific Type 2 Excludes traumatic dislocation of patella (S83.0-) Codes M22.0Recurrent dislocation of patellaM22.00Recurrent dislocation of patella, unspecified kneeM22.01Recurrent dislocation of patella, right kneeM22.02Recurrent dislocation of patella, left kneeM22.1Recurrent subluxation of patellaM22.10Recurrent subluxation of patella, unspecified kneeM22.11Recurrent subluxation of patella, right kneeM22.12Recurrent subluxation of patella, left kneeM22.2Patellofemoral disordersM22.2XPatellofemoral disordersM22.2X1Patellofemoral disorders, right kneeM22.2X2Patellofemoral disorders, left kneeM22.2X9Patellofemoral disorders, unspecified kneeM22.3Other derangements of patellaM22.3XOther derangements of patellaM22.3X1Other derangements of patella, right kneeM22.3X2Other derangements of patella, left kneeM22.3X9Other derangements of patella, unspecified kneeM22.4Chondromalacia patellaeM22.40Chondromalacia patellae, unspecified kneeM22.41Chondromalacia patellae, right kneeM22.42Chondromalacia patellae, left kneeM22.8Other disorders of patellaM22.8XOther disorders of patellaM22.8X1Other disorders of patella, right kneeM22.8X2Other disorders of patella, left kneeM22.8X9Other disorders of patella, unspecified kneeM22.9Unspecified disorder of patellaM22.90Unspecified disorder of patella, unspecified kneeM22.91Unspecified disorder of patella, right kneeM22.92Unspecified disorder of patella, left knee