| M20 | Acquired deformities of fingers and toes |
| M20.0 | Deformity of finger(s) |
| 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) |
| 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 |
| M21 | Other acquired deformities of limbs |
| M21.0 | Valgus deformity, not elsewhere classified |
| M21.00 | Valgus deformity, not elsewhere classified, unspecified site |
| M21.02 | Valgus deformity, not elsewhere classified, elbow |
| M21.021 | Valgus deformity, not elsewhere classified, right elbow |
| M21.022 | Valgus deformity, not elsewhere classified, left elbow |
| M21.029 | Valgus deformity, not elsewhere classified, unspecified elbow |
| M21.05 | Valgus deformity, not elsewhere classified, hip |
| M21.051 | Valgus deformity, not elsewhere classified, right hip |
| M21.052 | Valgus deformity, not elsewhere classified, left hip |
| M21.059 | Valgus deformity, not elsewhere classified, unspecified hip |
| M21.06 | Valgus deformity, not elsewhere classified, knee |
| M21.061 | Valgus deformity, not elsewhere classified, right knee |
| M21.062 | Valgus deformity, not elsewhere classified, left knee |
| M21.069 | Valgus deformity, not elsewhere classified, unspecified knee |
| M21.07 | Valgus deformity, not elsewhere classified, ankle |
| M21.071 | Valgus deformity, not elsewhere classified, right ankle |
| M21.072 | Valgus deformity, not elsewhere classified, left ankle |
| M21.079 | Valgus deformity, not elsewhere classified, unspecified ankle |
| M21.1 | Varus deformity, not elsewhere classified |
| M21.10 | Varus deformity, not elsewhere classified, unspecified site |
| M21.12 | Varus deformity, not elsewhere classified, elbow |
| M21.121 | Varus deformity, not elsewhere classified, right elbow |
| M21.122 | Varus deformity, not elsewhere classified, left elbow |
| M21.129 | Varus deformity, not elsewhere classified, unspecified elbow |
| M21.15 | Varus deformity, not elsewhere classified, hip |
| M21.151 | Varus deformity, not elsewhere classified, right hip |
| M21.152 | Varus deformity, not elsewhere classified, left hip |
| M21.159 | Varus deformity, not elsewhere classified, unspecified |
| M21.16 | Varus deformity, not elsewhere classified, knee |
| M21.161 | Varus deformity, not elsewhere classified, right knee |
| M21.162 | Varus deformity, not elsewhere classified, left knee |
| M21.169 | Varus deformity, not elsewhere classified, unspecified knee |
| M21.17 | Varus deformity, not elsewhere classified, ankle |
| M21.171 | Varus deformity, not elsewhere classified, right ankle |
| M21.172 | Varus deformity, not elsewhere classified, left ankle |
| M21.179 | Varus deformity, not elsewhere classified, unspecified ankle |
| M21.2 | Flexion deformity |
| M21.20 | Flexion deformity, unspecified site |
| M21.21 | Flexion deformity, shoulder |
| M21.211 | Flexion deformity, right shoulder |
| M21.212 | Flexion deformity, left shoulder |
| M21.219 | Flexion deformity, unspecified shoulder |
| M21.22 | Flexion deformity, elbow |
| M21.221 | Flexion deformity, right elbow |
| M21.222 | Flexion deformity, left elbow |
| M21.229 | Flexion deformity, unspecified elbow |
| M21.23 | Flexion deformity, wrist |
| M21.231 | Flexion deformity, right wrist |
| M21.232 | Flexion deformity, left wrist |
| M21.239 | Flexion deformity, unspecified wrist |
| M21.24 | Flexion deformity, finger joints |
| M21.241 | Flexion deformity, right finger joints |
| M21.242 | Flexion deformity, left finger joints |
| M21.249 | Flexion deformity, unspecified finger joints |
| M21.25 | Flexion deformity, hip |
| M21.251 | Flexion deformity, right hip |
| M21.252 | Flexion deformity, left hip |
| M21.259 | Flexion deformity, unspecified hip |
| M21.26 | Flexion deformity, knee |
| M21.261 | Flexion deformity, right knee |
| M21.262 | Flexion deformity, left knee |
| M21.269 | Flexion deformity, unspecified knee |
| M21.27 | Flexion deformity, ankle and toes |
| M21.271 | Flexion deformity, right ankle and toes |
| M21.272 | Flexion deformity, left ankle and toes |
| M21.279 | Flexion deformity, unspecified ankle and toes |
| M21.3 | Wrist or foot drop (acquired) |
| M21.33 | Wrist drop (acquired) |
| M21.331 | Wrist drop, right wrist |
| M21.332 | Wrist drop, left wrist |
| M21.339 | Wrist drop, unspecified wrist |
| M21.37 | Foot drop (acquired) |
| M21.371 | Foot drop, right foot |
| M21.372 | Foot drop, left foot |
| M21.379 | Foot drop, unspecified foot |
| M21.4 | Flat foot [pes planus] (acquired) |
| M21.40 | Flat foot [pes planus] (acquired), unspecified foot |
| M21.41 | Flat foot [pes planus] (acquired), right foot |
| M21.42 | Flat foot [pes planus] (acquired), left foot |
| M21.5 | Acquired clawhand, clubhand, clawfoot and clubfoot |
| M21.51 | Acquired clawhand |
| M21.511 | Acquired clawhand, right hand |
| M21.512 | Acquired clawhand, left hand |
| M21.519 | Acquired clawhand, unspecified hand |
| M21.52 | Acquired clubhand |
| M21.521 | Acquired clubhand, right hand |
| M21.522 | Acquired clubhand, left hand |
| M21.529 | Acquired clubhand, unspecified hand |
| M21.53 | Acquired clawfoot |
| M21.531 | Acquired clawfoot, right foot |
| M21.532 | Acquired clawfoot, left foot |
| M21.539 | Acquired clawfoot, unspecified foot |
| M21.54 | Acquired clubfoot |
| M21.541 | Acquired clubfoot, right foot |
| M21.542 | Acquired clubfoot, left foot |
| M21.549 | Acquired clubfoot, unspecified foot |
| M21.6 | Other acquired deformities of foot |
| M21.6X | Other acquired deformities of foot |
| M21.6X1 | Other acquired deformities of right foot |
| M21.6X2 | Other acquired deformities of left foot |
| M21.6X9 | Other acquired deformities of unspecified foot |
| M21.7 | Unequal limb length (acquired) |
| M21.70 | Unequal limb length (acquired), unspecified site |
| M21.72 | Unequal limb length (acquired), humerus |
| M21.721 | Unequal limb length (acquired), right humerus |
| M21.722 | Unequal limb length (acquired), left humerus |
| M21.729 | Unequal limb length (acquired), unspecified humerus |
| M21.73 | Unequal limb length (acquired), ulna and radius |
| M21.731 | Unequal limb length (acquired), right ulna |
| M21.732 | Unequal limb length (acquired), left ulna |
| M21.733 | Unequal limb length (acquired), right radius |
| M21.734 | Unequal limb length (acquired), left radius |
| M21.739 | Unequal limb length (acquired), unspecified ulna and radius |
| M21.75 | Unequal limb length (acquired), femur |
| M21.751 | Unequal limb length (acquired), right femur |
| M21.752 | Unequal limb length (acquired), left femur |
| M21.759 | Unequal limb length (acquired), unspecified femur |
| M21.76 | Unequal limb length (acquired), tibia and fibula |
| M21.761 | Unequal limb length (acquired), right tibia |
| M21.762 | Unequal limb length (acquired), left tibia |
| M21.763 | Unequal limb length (acquired), right fibula |
| M21.764 | Unequal limb length (acquired), left fibula |
| M21.769 | Unequal limb length (acquired), unspecified tibia and fibula |
| M21.8 | Other specified acquired deformities of limbs |
| M21.80 | Other specified acquired deformities of unspecified limb |
| M21.82 | Other specified acquired deformities of upper arm |
| M21.821 | Other specified acquired deformities of right upper arm |
| M21.822 | Other specified acquired deformities of left upper arm |
| M21.829 | Other specified acquired deformities of unspecified upper arm |
| M21.83 | Other specified acquired deformities of forearm |
| M21.831 | Other specified acquired deformities of right forearm |
| M21.832 | Other specified acquired deformities of left forearm |
| M21.839 | Other specified acquired deformities of unspecified forearm |
| M21.85 | Other specified acquired deformities of thigh |
| M21.851 | Other specified acquired deformities of right thigh |
| M21.852 | Other specified acquired deformities of left thigh |
| M21.859 | Other specified acquired deformities of unspecified thigh |
| M21.86 | Other specified acquired deformities of lower leg |
| M21.861 | Other specified acquired deformities of right lower leg |
| M21.862 | Other specified acquired deformities of left lower leg |
| M21.869 | Other specified acquired deformities of unspecified lower leg |
| M21.9 | Unspecified acquired deformity of limb and hand |
| M21.90 | Unspecified acquired deformity of unspecified limb |
| M21.92 | Unspecified acquired deformity of upper arm |
| M21.921 | Unspecified acquired deformity of right upper arm |
| M21.922 | Unspecified acquired deformity of left upper arm |
| M21.929 | Unspecified acquired deformity of unspecified upper arm |
| M21.93 | Unspecified acquired deformity of forearm |
| M21.931 | Unspecified acquired deformity of right forearm |
| M21.932 | Unspecified acquired deformity of left forearm |
| M21.939 | Unspecified acquired deformity of unspecified forearm |
| M21.94 | Unspecified acquired deformity of hand |
| M21.941 | Unspecified acquired deformity of hand, right hand |
| M21.942 | Unspecified acquired deformity of hand, left hand |
| M21.949 | Unspecified acquired deformity of hand, unspecified hand |
| M21.95 | Unspecified acquired deformity of thigh |
| M21.951 | Unspecified acquired deformity of right thigh |
| M21.952 | Unspecified acquired deformity of left thigh |
| M21.959 | Unspecified acquired deformity of unspecified thigh |
| M21.96 | Unspecified acquired deformity of lower leg |
| M21.961 | Unspecified acquired deformity of right lower leg |
| M21.962 | Unspecified acquired deformity of left lower leg |
| M21.969 | Unspecified acquired deformity of unspecified lower leg |