 
| ICD-10-CM-2023 > M00-M99 > M20-M25 > M20 | 
| M20-M25 | Other joint disorders | |
| Excl2.: | joints of the spine (M40-M54) | |
| M20 | Acquired deformities of fingers and toes | |
| Excl1.: | acquired absence of fingers and toes (Z89.-) congenital absence of fingers and toes (Q71.3-, Q72.3-) congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-) | |
| M20.0 | Deformity of finger(s) | |
| Excl1.: | clubbing of fingers (R68.3) palmar fascial fibromatosis [Dupuytren] (M72.0) trigger finger (M65.3) | |
| M20.00 | Unspecified deformity of finger(s) | |
| M20.001 | Unspecified deformity of right finger(s) | |
| M20.002 | Unspecified deformity of left finger(s) | |
| M20.009 | Unspecified deformity of unspecified finger(s) | |
| M20.01 | Mallet finger | |
| M20.011 | Mallet finger of right finger(s) | |
| M20.012 | Mallet finger of left finger(s) | |
| M20.019 | Mallet finger of unspecified finger(s) | |
| M20.02 | Boutonnière deformity | |
| M20.021 | Boutonnière deformity of right finger(s) | |
| M20.022 | Boutonnière deformity of left finger(s) | |
| M20.029 | Boutonnière deformity of unspecified finger(s) | |
| M20.03 | Swan-neck deformity | |
| M20.031 | Swan-neck deformity of right finger(s) | |
| M20.032 | Swan-neck deformity of left finger(s) | |
| M20.039 | Swan-neck deformity of unspecified finger(s) | |
| M20.09 | Other deformity of finger(s) | |
| M20.091 | Other deformity of right finger(s) | |
| M20.092 | Other deformity of left finger(s) | |
| M20.099 | Other deformity of finger(s), unspecified finger(s) | |
| M20.1 | Hallux valgus (acquired) | |
| Excl2.: | bunion (M21.6-) | |
| M20.10 | Hallux valgus (acquired), unspecified foot | |
| M20.11 | Hallux valgus (acquired), right foot | |
| M20.12 | Hallux valgus (acquired), left foot | |
| M20.2 | Hallux rigidus | |
| M20.20 | Hallux rigidus, unspecified foot | |
| M20.21 | Hallux rigidus, right foot | |
| M20.22 | Hallux rigidus, left foot | |
| M20.3 | Hallux varus (acquired) | |
| M20.30 | Hallux varus (acquired), unspecified foot | |
| M20.31 | Hallux varus (acquired), right foot | |
| M20.32 | Hallux varus (acquired), left foot | |
| M20.4 | Other hammer toe(s) (acquired) | |
| M20.40 | Other hammer toe(s) (acquired), unspecified foot | |
| M20.41 | Other hammer toe(s) (acquired), right foot | |
| M20.42 | Other hammer toe(s) (acquired), left foot | |
| M20.5 | Other deformities of toe(s) (acquired) | |
| M20.5X | Other deformities of toe(s) (acquired) | |
| M20.5X1 | Other deformities of toe(s) (acquired), right foot | |
| M20.5X2 | Other deformities of toe(s) (acquired), left foot | |
| M20.5X9 | Other deformities of toe(s) (acquired), unspecified foot | |
| M20.6 | Acquired deformities of toe(s), unspecified | |
| M20.60 | Acquired deformities of toe(s), unspecified, unspecified foot | |
| M20.61 | Acquired deformities of toe(s), unspecified, right foot | |
| M20.62 | Acquired deformities of toe(s), unspecified, left foot | |
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