M21 | 
		  | 
		Other acquired deformities of limbs   | 
	
	
		 |  | 
		
	
		| Excludes1 | 
		acquired absence of limb (Z89.-) congenital absence of limbs (Q71-Q73) congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)
  | 
	 
	
		| Excludes2 | 
		acquired deformities of fingers or toes (M20.-) coxa plana (M91.2)
  | 
	 
 
 | 
	
 |  | 
	
		 M21.0 | 
		  | 
		Valgus deformity, not elsewhere classified | 
	 
	
		 |  | 
		
	
		| Excludes1 | 
		metatarsus valgus (Q66.6) talipes calcaneovalgus (Q66.4-)
  | 
	 
 
 | 
	  |  | 
	
		 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 hip | 
	 
  |    |   |  | 
	
		 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) | 
	 
	
		 |  | 
		
	
		| Excludes1 | 
		congenital pes planus (Q66.5-)
  | 
	 
 
 | 
	  |  | 
	
		 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 | 
	 
	
		 |  | 
		
	
		| Excludes1 | 
		clubfoot, not specified as acquired (Q66.89)
  | 
	 
 
 | 
	  |  | 
	
		 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 | 
	 
	
		 |  | 
		
	
		| Excludes2 | 
		deformities of toe (acquired) (M20.1-M20.6-)
  | 
	 
 
 | 
	  |  | 
	
		 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) | 
	 
	
		 |  | 
		
	
		| Notes | 
		The site used should correspond to the shorter limb
  | 
	 
 
 | 
	  |  | 
	
		 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 | 
	 
	
		 |  | 
		
	
		| Excludes2 | 
		coxa plana (M91.2)
  | 
	 
 
 | 
	  |  | 
	
		 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 | 
	 
  |    |    |