M91 | 
		  | 
		Juvenile osteochondrosis of hip and pelvis   | 
	
	
		 |  | 
		
	
		| Excludes1 | 
		slipped upper femoral epiphysis (nontraumatic) (M93.0-)
  | 
	 
 
 | 
	
 |  | 
	
		 M91.0 | 
		  | 
		Juvenile osteochondrosis of pelvis | 
	 
	
		 |  | 
		
| Osteochondrosis (juvenile) of acetabulum |  | Osteochondrosis (juvenile) of iliac crest [Buchanan] |  | Osteochondrosis (juvenile) of ischiopubic synchondrosis [van Neck] |  | Osteochondrosis (juvenile) of symphysis pubis [Pierson] |   
 | 
	   | 
 |  | 
	
		 M91.1 | 
		 | 
		Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes] | 
	 
 |  | 
	
		 M91.10 | 
		 | 
		Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], unspecified leg | 
	 
  |   |  | 
	
		 M91.11 | 
		 | 
		Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], right leg | 
	 
  |   |  | 
	
		 M91.12 | 
		 | 
		Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], left leg | 
	 
  |    | 
 |  | 
	
		 M91.2 | 
		  | 
		Coxa plana | 
	 
	
		 |  | 
		
| Hip deformity due to previous juvenile osteochondrosis |   
 | 
	  |  | 
	
		 M91.20 | 
		 | 
		Coxa plana, unspecified hip | 
	 
  |   |  | 
	
		 M91.21 | 
		 | 
		Coxa plana, right hip | 
	 
  |   |  | 
	
		 M91.22 | 
		 | 
		Coxa plana, left hip | 
	 
  |    | 
 |  | 
	
		 M91.3 | 
		 | 
		Pseudocoxalgia | 
	 
 |  | 
	
		 M91.30 | 
		 | 
		Pseudocoxalgia, unspecified hip | 
	 
  |   |  | 
	
		 M91.31 | 
		 | 
		Pseudocoxalgia, right hip | 
	 
  |   |  | 
	
		 M91.32 | 
		 | 
		Pseudocoxalgia, left hip | 
	 
  |    | 
 |  | 
	
		 M91.4 | 
		 | 
		Coxa magna | 
	 
 |  | 
	
		 M91.40 | 
		 | 
		Coxa magna, unspecified hip | 
	 
  |   |  | 
	
		 M91.41 | 
		 | 
		Coxa magna, right hip | 
	 
  |   |  | 
	
		 M91.42 | 
		 | 
		Coxa magna, left hip | 
	 
  |    | 
 |  | 
	
		 M91.8 | 
		  | 
		Other juvenile osteochondrosis of hip and pelvis | 
	 
	
		 |  | 
		
| Juvenile osteochondrosis after reduction of congenital dislocation of hip |   
 | 
	  |  | 
	
		 M91.80 | 
		 | 
		Other juvenile osteochondrosis of hip and pelvis, unspecified leg | 
	 
  |   |  | 
	
		 M91.81 | 
		 | 
		Other juvenile osteochondrosis of hip and pelvis, right leg | 
	 
  |   |  | 
	
		 M91.82 | 
		 | 
		Other juvenile osteochondrosis of hip and pelvis, left leg | 
	 
  |    | 
 |  | 
	
		 M91.9 | 
		 | 
		Juvenile osteochondrosis of hip and pelvis, unspecified | 
	 
 |  | 
	
		 M91.90 | 
		 | 
		Juvenile osteochondrosis of hip and pelvis, unspecified, unspecified leg | 
	 
  |   |  | 
	
		 M91.91 | 
		 | 
		Juvenile osteochondrosis of hip and pelvis, unspecified, right leg | 
	 
  |   |  | 
	
		 M91.92 | 
		 | 
		Juvenile osteochondrosis of hip and pelvis, unspecified, left leg | 
	 
  |    |