M00–M99
Diseases of the Musculoskeletal System and Connective Tissue
Arthritis, osteoporosis, back pain, gout
M21.15
Varus deformity, not elsewhere classified, hip
Non-billable
M21.151
Varus deformity, not elsewhere classified, right hip
Billable
M21.152
Varus deformity, not elsewhere classified, left hip
Billable
M21.159
Varus deformity, not elsewhere classified, unspecified hip
Billable
M21.16
Varus deformity, not elsewhere classified, knee
Non-billable
M21.161
Varus deformity, not elsewhere classified, right knee
Billable
M21.162
Varus deformity, not elsewhere classified, left knee
Billable
M21.169
Varus deformity, not elsewhere classified, unspecified knee
Billable
M21.17
Varus deformity, not elsewhere classified, ankle
Non-billable
M21.171
Varus deformity, not elsewhere classified, right ankle
Billable
M21.172
Varus deformity, not elsewhere classified, left ankle
Billable
M21.179
Varus deformity, not elsewhere classified, unspecified ankle
Billable
M21.2
Flexion deformity
Non-billable
M21.20
Flexion deformity, unspecified site
Billable
M21.21
Flexion deformity, shoulder
Non-billable
M21.211
Flexion deformity, right shoulder
Billable
M21.212
Flexion deformity, left shoulder
Billable
M21.219
Flexion deformity, unspecified shoulder
Billable
M21.22
Flexion deformity, elbow
Non-billable
M21.221
Flexion deformity, right elbow
Billable
M21.222
Flexion deformity, left elbow
Billable
M21.229
Flexion deformity, unspecified elbow
Billable
M21.23
Flexion deformity, wrist
Non-billable
M21.231
Flexion deformity, right wrist
Billable
M21.232
Flexion deformity, left wrist
Billable
M21.239
Flexion deformity, unspecified wrist
Billable
M21.24
Flexion deformity, finger joints
Non-billable
M21.241
Flexion deformity, right finger joints
Billable
M21.242
Flexion deformity, left finger joints
Billable
M21.249
Flexion deformity, unspecified finger joints
Billable
M21.25
Flexion deformity, hip
Non-billable
M21.251
Flexion deformity, right hip
Billable
M21.252
Flexion deformity, left hip
Billable
M21.259
Flexion deformity, unspecified hip
Billable
M21.26
Flexion deformity, knee
Non-billable
M21.261
Flexion deformity, right knee
Billable
M21.262
Flexion deformity, left knee
Billable
M21.269
Flexion deformity, unspecified knee
Billable
M21.27
Flexion deformity, ankle and toes
Non-billable
M21.271
Flexion deformity, right ankle and toes
Billable
M21.272
Flexion deformity, left ankle and toes
Billable
M21.279
Flexion deformity, unspecified ankle and toes
Billable
M21.3
Wrist or foot drop (acquired)
Non-billable
M21.33
Wrist drop (acquired)
Non-billable
M21.331
Wrist drop, right wrist
Billable
M21.332
Wrist drop, left wrist
Billable
M21.339
Wrist drop, unspecified wrist
Billable
M21.37
Foot drop (acquired)
Non-billable
M21.371
Foot drop, right foot
Billable
M21.372
Foot drop, left foot
Billable
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