| 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 | 
												
					| O36.8 | Maternal care for other specified fetal problems | 
												
					| O36.80 | Pregnancy with inconclusive fetal viability | 
												
					| O36.81 | Decreased fetal movements | 
												
					| O36.812 | Decreased fetal movements, second trimester | 
												
					| O36.813 | Decreased fetal movements, third trimester | 
												
					| O36.819 | Decreased fetal movements, unspecified trimester | 
												
					| O36.82 | Fetal anemia and thrombocytopenia | 
												
					| O36.821 | Fetal anemia and thrombocytopenia, first trimester | 
												
					| O36.822 | Fetal anemia and thrombocytopenia, second trimester | 
												
					| O36.823 | Fetal anemia and thrombocytopenia, third trimester | 
												
					| O36.829 | Fetal anemia and thrombocytopenia, unspecified trimester | 
												
					| O36.83 | Maternal care for abnormalities of the fetal heart rate or rhythm | 
												
					| O36.831 | Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester | 
												
					| O36.832 | Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester | 
												
					| O36.833 | Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester | 
												
					| O36.839 | Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimester | 
												
					| O36.89 | Maternal care for other specified fetal problems | 
												
					| O36.891 | Maternal care for other specified fetal problems, first trimester | 
												
					| O36.892 | Maternal care for other specified fetal problems, second trimester | 
												
					| O36.893 | Maternal care for other specified fetal problems, third trimester | 
												
					| O36.899 | Maternal care for other specified fetal problems, unspecified trimester |