M22.3X | Other derangements of patella | NON-BILLABLE CODE |
M22.3X1 | Other derangements of patella, right knee | BILLABLE CODE |
M22.3X2 | Other derangements of patella, left knee | BILLABLE CODE |
M22.3X9 | Other derangements of patella, unspecified knee | BILLABLE CODE |