|  O36 |  | Maternal care for other fetal problems   | 
	
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		| Includes | the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy 
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		| Excludes1 | encounter for suspected maternal and fetal conditions ruled out (Z03.7-) placental transfusion syndromes (O43.0-)
 
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		| Excludes2 | labor and delivery complicated by fetal stress (O77.-) 
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		| char7Note | One of the following 7th characters is to be assigned to each code under category O36.  7th character 0 is for single gestations and multiple gestations where the fetus is unspecified.  7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O36 that has a 7th character of 1 through 9. 
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		| char7Def | 0: not applicable or unspecified 1: fetus 1
 2: fetus 2
 3: fetus 3
 4: fetus 4
 5: fetus 5
 9: other fetus
 
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		|  O36.0 |  | Maternal care for rhesus isoimmunization |  
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| Maternal care for Rh incompatibility (with hydrops fetalis) |  |  |  |  | 
	
		|  O36.01 |  | Maternal care for anti-D [Rh] antibodies |  |  |  | 
	
		|  O36.011 |  | Maternal care for anti-D [Rh] antibodies, first trimester |  |  |  |  | 
	
		|  O36.012 |  | Maternal care for anti-D [Rh] antibodies, second trimester |  |  |  |  | 
	
		|  O36.013 |  | Maternal care for anti-D [Rh] antibodies, third trimester |  |  |  |  | 
	
		|  O36.019 |  | Maternal care for anti-D [Rh] antibodies, unspecified trimester |  |  |  |  |  | 
	
		|  O36.09 |  | Maternal care for other rhesus isoimmunization |  |  |  | 
	
		|  O36.091 |  | Maternal care for other rhesus isoimmunization, first trimester |  |  |  |  | 
	
		|  O36.092 |  | Maternal care for other rhesus isoimmunization, second trimester |  |  |  |  | 
	
		|  O36.093 |  | Maternal care for other rhesus isoimmunization, third trimester |  |  |  |  | 
	
		|  O36.099 |  | Maternal care for other rhesus isoimmunization, unspecified trimester |  |  |  | 
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		|  O36.1 |  | Maternal care for other isoimmunization |  
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| Maternal care for ABO isoimmunization |  |  |  |  | 
	
		|  O36.11 |  | Maternal care for Anti-A sensitization |  
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| Maternal care for isoimmunization NOS (with hydrops fetalis) |  |  |  |  | 
	
		|  O36.111 |  | Maternal care for Anti-A sensitization, first trimester |  |  |  |  | 
	
		|  O36.112 |  | Maternal care for Anti-A sensitization, second trimester |  |  |  |  | 
	
		|  O36.113 |  | Maternal care for Anti-A sensitization, third trimester |  |  |  |  | 
	
		|  O36.119 |  | Maternal care for Anti-A sensitization, unspecified trimester |  |  |  |  |  | 
	
		|  O36.19 |  | Maternal care for other isoimmunization |  
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| Maternal care for Anti-B sensitization |  |  |  |  | 
	
		|  O36.191 |  | Maternal care for other isoimmunization, first trimester |  |  |  |  | 
	
		|  O36.192 |  | Maternal care for other isoimmunization, second trimester |  |  |  |  | 
	
		|  O36.193 |  | Maternal care for other isoimmunization, third trimester |  |  |  |  | 
	
		|  O36.199 |  | Maternal care for other isoimmunization, unspecified trimester |  |  |  | 
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		|  O36.2 |  | Maternal care for hydrops fetalis |  
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| Maternal care for hydrops fetalis NOS |  | Maternal care for hydrops fetalis not associated with isoimmunization |  
		| Excludes1 | hydrops fetalis associated with ABO isoimmunization (O36.1-) hydrops fetalis associated with rhesus isoimmunization (O36.0-)
 
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		|  O36.20 |  | Maternal care for hydrops fetalis, unspecified trimester |  |  |  |  | 
	
		|  O36.21 |  | Maternal care for hydrops fetalis, first trimester |  |  |  |  | 
	
		|  O36.22 |  | Maternal care for hydrops fetalis, second trimester |  |  |  |  | 
	
		|  O36.23 |  | Maternal care for hydrops fetalis, third trimester |  |  | 
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		|  O36.4 |  | Maternal care for intrauterine death |  
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| Maternal care for intrauterine fetal death NOS |  | Maternal care for intrauterine fetal death after completion of 20 weeks of gestation |  | Maternal care for late fetal death |  | Maternal care for missed delivery |  
		| Excludes1 | missed abortion (O02.1) stillbirth (P95)
 
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		|  O36.5 |  | Maternal care for known or suspected poor fetal growth |  |  |  | 
	
		|  O36.51 |  | Maternal care for known or suspected placental insufficiency |  |  |  | 
	
		|  O36.511 |  | Maternal care for known or suspected placental insufficiency, first trimester |  |  |  |  | 
	
		|  O36.512 |  | Maternal care for known or suspected placental insufficiency, second trimester |  |  |  |  | 
	
		|  O36.513 |  | Maternal care for known or suspected placental insufficiency, third trimester |  |  |  |  | 
	
		|  O36.519 |  | Maternal care for known or suspected placental insufficiency, unspecified trimester |  |  |  |  |  | 
	
		|  O36.59 |  | Maternal care for other known or suspected poor fetal growth |  
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| Maternal care for known or suspected light-for-dates NOS |  | Maternal care for known or suspected small-for-dates NOS |  |  |  |  | 
	
		|  O36.591 |  | Maternal care for other known or suspected poor fetal growth, first trimester |  |  |  |  | 
	
		|  O36.592 |  | Maternal care for other known or suspected poor fetal growth, second trimester |  |  |  |  | 
	
		|  O36.593 |  | Maternal care for other known or suspected poor fetal growth, third trimester |  |  |  |  | 
	
		|  O36.599 |  | Maternal care for other known or suspected poor fetal growth, unspecified trimester |  |  |  | 
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		|  O36.6 |  | Maternal care for excessive fetal growth |  
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| Maternal care for known or suspected large-for-dates |  |  |  |  | 
	
		|  O36.60 |  | Maternal care for excessive fetal growth, unspecified trimester |  |  |  |  | 
	
		|  O36.61 |  | Maternal care for excessive fetal growth, first trimester |  |  |  |  | 
	
		|  O36.62 |  | Maternal care for excessive fetal growth, second trimester |  |  |  |  | 
	
		|  O36.63 |  | Maternal care for excessive fetal growth, third trimester |  |  | 
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		|  O36.7 |  | Maternal care for viable fetus in abdominal pregnancy |  |  |  | 
	
		|  O36.70 |  | Maternal care for viable fetus in abdominal pregnancy, unspecified trimester |  |  |  |  | 
	
		|  O36.71 |  | Maternal care for viable fetus in abdominal pregnancy, first trimester |  |  |  |  | 
	
		|  O36.72 |  | Maternal care for viable fetus in abdominal pregnancy, second trimester |  |  |  |  | 
	
		|  O36.73 |  | Maternal care for viable fetus in abdominal pregnancy, third trimester |  |  | 
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		|  O36.8 |  | Maternal care for other specified fetal problems |  |  |  | 
	
		|  O36.80 |  | Pregnancy with inconclusive fetal viability |  
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| Encounter to determine fetal viability of pregnancy |  |  |  |  |  | 
	
		|  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 |  
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| Maternal care for depressed fetal heart rate tones |  | Maternal care for fetal bradycardia |  | Maternal care for fetal heart rate abnormal variability |  | Maternal care for fetal heart rate decelerations |  | Maternal care for fetal heart rate irregularity |  | Maternal care for fetal tachycardia |  | Maternal care for non-reassuring 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 |  |  |  | 
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		|  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 |  |  |