| Code | Title | 
					
				| – | All Chapters | 
		
									
					| O00-O9A | Pregnancy, childbirth and the puerperium (O00-O9A) | 
												
					| O30-O48 | Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48) | 
												
					| O36 | Maternal care for other fetal problems | 
												
					| O36.9 | Maternal care for fetal problem, unspecified | 
												
					| O36.90 | Maternal care for fetal problem, unspecified, unspecified trimester | 
												
					| O36.91 | Maternal care for fetal problem, unspecified, first trimester | 
												
					| O36.92 | Maternal care for fetal problem, unspecified, second trimester | 
												
					| O36.93 | Maternal care for fetal problem, unspecified, third trimester |