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M22 Disorder of patella

ICD-10-CM category M22 sits in Chapter 13 (Diseases of the musculoskeletal system and connective tissue, M00-M99). It contains 21 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

M22.0 Recurrent dislocation of patellaM22.1 Recurrent subluxation of patellaM22.2 Patellofemoral disordersM22.2X Patellofemoral disordersM22.3 Other derangements of patellaM22.3X Other derangements of patellaM22.4 Chondromalacia patellaeM22.8 Other disorders of patellaM22.8X Other disorders of patellaM22.9 Unspecified disorder of patella

Billable codes in M22

CodeDescription
M22.00Recurrent dislocation of patella, unspecified knee
M22.01Recurrent dislocation of patella, right knee
M22.02Recurrent dislocation of patella, left knee
M22.10Recurrent subluxation of patella, unspecified knee
M22.11Recurrent subluxation of patella, right knee
M22.12Recurrent subluxation of patella, left knee
M22.2X1Patellofemoral disorders, right knee
M22.2X2Patellofemoral disorders, left knee
M22.2X9Patellofemoral disorders, unspecified knee
M22.3X1Other derangements of patella, right knee
M22.3X2Other derangements of patella, left knee
M22.3X9Other derangements of patella, unspecified knee
M22.40Chondromalacia patellae, unspecified knee
M22.41Chondromalacia patellae, right knee
M22.42Chondromalacia patellae, left knee
M22.8X1Other disorders of patella, right knee
M22.8X2Other disorders of patella, left knee
M22.8X9Other disorders of patella, unspecified knee
M22.90Unspecified disorder of patella, unspecified knee
M22.91Unspecified disorder of patella, right knee
M22.92Unspecified disorder of patella, left knee

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