O66 | 
		 | 
		Other obstructed labor   | 
	
 |  | 
	
		 O66.0 | 
		  | 
		Obstructed labor due to shoulder dystocia | 
	 
	
		 |  | 
		
| Impacted shoulders |  	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O66.1 | 
		  | 
		Obstructed labor due to locked twins | 
	 
	
		 |  | 
		
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O66.2 | 
		  | 
		Obstructed labor due to unusually large fetus | 
	 
	
		 |  | 
		
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O66.3 | 
		  | 
		Obstructed labor due to other abnormalities of fetus | 
	 
	
		 |  | 
		
| Dystocia due to fetal ascites |  | Dystocia due to fetal hydrops |  | Dystocia due to fetal meningomyelocele |  | Dystocia due to fetal sacral teratoma |  | Dystocia due to fetal tumor |  | Dystocia due to hydrocephalic fetus |  	
		| UseAdditionalCode | 
		code to identify cause of obstruction
  | 
	 
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O66.4 | 
		 | 
		Failed trial of labor | 
	 
 |  | 
	
		 O66.40 | 
		  | 
		Failed trial of labor, unspecified | 
	 
	
		 |  | 
		
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   |   |  | 
	
		 O66.41 | 
		  | 
		Failed attempted vaginal birth after previous cesarean delivery | 
	 
	
		 |  | 
		
	
		| CodeFirst | 
		rupture of uterus, if applicable (O71.0-, O71.1)
  | 
	 
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   |    | 
 |  | 
	
		 O66.5 | 
		  | 
		Attempted application of vacuum extractor and forceps | 
	 
	
		 |  | 
		
| Attempted application of vacuum or forceps, with subsequent delivery by forceps or cesarean delivery |  	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O66.6 | 
		  | 
		Obstructed labor due to other multiple fetuses | 
	 
	
		 |  | 
		
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O66.8 | 
		  | 
		Other specified obstructed labor | 
	 
	
		 |  | 
		
	
		| UseAdditionalCode | 
		code to identify cause of obstruction
  | 
	 
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O66.9 | 
		  | 
		Obstructed labor, unspecified | 
	 
	
		 |  | 
		
| Dystocia NOS |  | Fetal dystocia NOS |  | Maternal dystocia NOS |  	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   |