M00–M99
Diseases of the Musculoskeletal System and Connective Tissue
Arthritis, osteoporosis, back pain, gout
M22.01
Recurrent dislocation of patella, right knee
Billable
M22.02
Recurrent dislocation of patella, left knee
Billable
M22.1
Recurrent subluxation of patella
Non-billable
M22.10
Recurrent subluxation of patella, unspecified knee
Billable
M22.11
Recurrent subluxation of patella, right knee
Billable
M22.12
Recurrent subluxation of patella, left knee
Billable
M22.2
Patellofemoral disorders
Non-billable
M22.2X
Patellofemoral disorders
Non-billable
M22.2X1
Patellofemoral disorders, right knee
Billable
M22.2X2
Patellofemoral disorders, left knee
Billable
M22.2X9
Patellofemoral disorders, unspecified knee
Billable
M22.3
Other derangements of patella
Non-billable
M22.3X
Other derangements of patella
Non-billable
M22.3X1
Other derangements of patella, right knee
Billable
M22.3X2
Other derangements of patella, left knee
Billable
M22.3X9
Other derangements of patella, unspecified knee
Billable
M22.4
Chondromalacia patellae
Non-billable
M22.40
Chondromalacia patellae, unspecified knee
Billable
M22.41
Chondromalacia patellae, right knee
Billable
M22.42
Chondromalacia patellae, left knee
Billable
M22.8
Other disorders of patella
Non-billable
M22.8X
Other disorders of patella
Non-billable
M22.8X1
Other disorders of patella, right knee
Billable
M22.8X2
Other disorders of patella, left knee
Billable
M22.8X9
Other disorders of patella, unspecified knee
Billable
M22.9
Unspecified disorder of patella
Non-billable
M22.90
Unspecified disorder of patella, unspecified knee
Billable
M22.91
Unspecified disorder of patella, right knee
Billable
M22.92
Unspecified disorder of patella, left knee
Billable
M23
Internal derangement of knee
Non-billable
M23.0
Cystic meniscus
Non-billable
M23.00
Cystic meniscus, unspecified meniscus
Non-billable
M23.000
Cystic meniscus, unspecified lateral meniscus, right knee
Billable
M23.001
Cystic meniscus, unspecified lateral meniscus, left knee
Billable
M23.002
Cystic meniscus, unspecified lateral meniscus, unspecified knee
Billable
M23.003
Cystic meniscus, unspecified medial meniscus, right knee
Billable
M23.004
Cystic meniscus, unspecified medial meniscus, left knee
Billable
M23.005
Cystic meniscus, unspecified medial meniscus, unspecified knee
Billable
M23.006
Cystic meniscus, unspecified meniscus, right knee
Billable
M23.007
Cystic meniscus, unspecified meniscus, left knee
Billable
M23.009
Cystic meniscus, unspecified meniscus, unspecified knee
Billable
M23.01
Cystic meniscus, anterior horn of medial meniscus
Non-billable
M23.011
Cystic meniscus, anterior horn of medial meniscus, right knee
Billable
M23.012
Cystic meniscus, anterior horn of medial meniscus, left knee
Billable
M23.019
Cystic meniscus, anterior horn of medial meniscus, unspecified knee
Billable
M23.02
Cystic meniscus, posterior horn of medial meniscus
Non-billable
M23.021
Cystic meniscus, posterior horn of medial meniscus, right knee
Billable
M23.022
Cystic meniscus, posterior horn of medial meniscus, left knee
Billable
M23.029
Cystic meniscus, posterior horn of medial meniscus, unspecified knee
Billable
M23.03
Cystic meniscus, other medial meniscus
Non-billable
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