Other acquired deformities of limbs - M21

Excludes1: It indicates that the conditions described by two codes cannot occur together in the same patient. These codes are mutually exclusive.

Type 1 Excludes:

acquired absence of limb (Z89.-)
congenital absence of limbs (Q71-Q73)
congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)

Excludes2: This note means that the conditions described by two codes are not usually associated with each other but can sometimes occur together.

Type 2 Excludes:

acquired deformities of fingers or toes (M20.-)
coxa plana (M91.2)

These ranges represents subcategories of Other acquired deformities of limbs. The "M21" signifies that these are the diseases within this broad category.

Codes:

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
M21.61 - Bunion
M21.611 - Bunion of right foot
M21.612 - Bunion of left foot
M21.619 - Bunion of unspecified foot
M21.62 - Bunionette
M21.621 - Bunionette of right foot
M21.622 - Bunionette of left foot
M21.629 - Bunionette of unspecified 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