O21 | 
		 | 
		Excessive vomiting in pregnancy  | 
	
 |  | 
	
		 O21.0 | 
		  | 
		Mild hyperemesis gravidarum | 
	 
	
		 |  | 
		
| Hyperemesis gravidarum, mild or unspecified, starting before the end of the 20th week of gestation |  	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O21.1 | 
		  | 
		Hyperemesis gravidarum with metabolic disturbance | 
	 
	
		 |  | 
		
| Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as carbohydrate depletion |  | Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as dehydration |  | Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as electrolyte imbalance |  	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O21.2 | 
		  | 
		Late vomiting of pregnancy | 
	 
	
		 |  | 
		
| Excessive vomiting starting after 20 completed weeks of gestation |  	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O21.8 | 
		  | 
		Other vomiting complicating pregnancy | 
	 
	
		 |  | 
		
| Vomiting due to diseases classified elsewhere, complicating pregnancy |  	
		| UseAdditionalCode | 
		code, to identify cause.
  | 
	 
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   | 
 |  | 
	
		 O21.9 | 
		  | 
		Vomiting of pregnancy, unspecified | 
	 
	
		 |  | 
		
	
		| sex | 
		Female
  | 
	 
	
		| age | 
		Maternity: [12-55]
  | 
	 
 
 | 
	   |