| M20 | Acquired deformities of fingers and toes | NON-BILLABLE CODE |
| M20.0 | Deformity of finger(s) | NON-BILLABLE CODE |
| M20.00 | Unspecified deformity of finger(s) | NON-BILLABLE CODE |
| M20.001 | Unspecified deformity of right finger(s) | BILLABLE CODE |
| M20.002 | Unspecified deformity of left finger(s) | BILLABLE CODE |
| M20.009 | Unspecified deformity of unspecified finger(s) | BILLABLE CODE |
| M20.01 | Mallet finger | NON-BILLABLE CODE |
| M20.011 | Mallet finger of right finger(s) | BILLABLE CODE |
| M20.012 | Mallet finger of left finger(s) | BILLABLE CODE |
| M20.019 | Mallet finger of unspecified finger(s) | BILLABLE CODE |
| M20.02 | Boutonniere deformity | NON-BILLABLE CODE |
| M20.021 | Boutonniere deformity of right finger(s) | BILLABLE CODE |
| M20.022 | Boutonniere deformity of left finger(s) | BILLABLE CODE |
| M20.029 | Boutonniere deformity of unspecified finger(s) | BILLABLE CODE |
| M20.03 | Swan-neck deformity | NON-BILLABLE CODE |
| M20.031 | Swan-neck deformity of right finger(s) | BILLABLE CODE |
| M20.032 | Swan-neck deformity of left finger(s) | BILLABLE CODE |
| M20.039 | Swan-neck deformity of unspecified finger(s) | BILLABLE CODE |
| M20.09 | Other deformity of finger(s) | NON-BILLABLE CODE |
| M20.091 | Other deformity of right finger(s) | BILLABLE CODE |
| M20.092 | Other deformity of left finger(s) | BILLABLE CODE |
| M20.099 | Other deformity of finger(s), unspecified finger(s) | BILLABLE CODE |
| M20.1 | Hallux valgus (acquired) | NON-BILLABLE CODE |
| M20.10 | Hallux valgus (acquired), unspecified foot | BILLABLE CODE |
| M20.11 | Hallux valgus (acquired), right foot | BILLABLE CODE |
| M20.12 | Hallux valgus (acquired), left foot | BILLABLE CODE |
| M20.2 | Hallux rigidus | NON-BILLABLE CODE |
| M20.20 | Hallux rigidus, unspecified foot | BILLABLE CODE |
| M20.21 | Hallux rigidus, right foot | BILLABLE CODE |
| M20.22 | Hallux rigidus, left foot | BILLABLE CODE |
| M20.3 | Hallux varus (acquired) | NON-BILLABLE CODE |
| M20.30 | Hallux varus (acquired), unspecified foot | BILLABLE CODE |
| M20.31 | Hallux varus (acquired), right foot | BILLABLE CODE |
| M20.32 | Hallux varus (acquired), left foot | BILLABLE CODE |
| M20.4 | Other hammer toe(s) (acquired) | NON-BILLABLE CODE |
| M20.40 | Other hammer toe(s) (acquired), unspecified foot | BILLABLE CODE |
| M20.41 | Other hammer toe(s) (acquired), right foot | BILLABLE CODE |
| M20.42 | Other hammer toe(s) (acquired), left foot | BILLABLE CODE |
| M20.5 | Other deformities of toe(s) (acquired) | NON-BILLABLE CODE |
| M20.5X | Other deformities of toe(s) (acquired) | NON-BILLABLE CODE |
| M20.5X1 | Other deformities of toe(s) (acquired), right foot | BILLABLE CODE |
| M20.5X2 | Other deformities of toe(s) (acquired), left foot | BILLABLE CODE |
| M20.6 | Acquired deformities of toe(s), unspecified | NON-BILLABLE CODE |
| M20.60 | Acquired deformities of toe(s), unspecified, unspecified foot | BILLABLE CODE |
| M20.61 | Acquired deformities of toe(s), unspecified, right foot | BILLABLE CODE |
| M20.62 | Acquired deformities of toe(s), unspecified, left foot | BILLABLE CODE |
