O36 Maternal care for other fetal problems

Category / Non-billable header 75 subcodes

Block: Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

Includes

  • the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy

Excludes 1 (cannot be coded together)

  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
  • placental transfusion syndromes (O43.0-)

Excludes 2 (not included here)

  • labor and delivery complicated by fetal stress (O77.-)

Subcodes

Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.

Code Description Billable
O36..0 Maternal care for rhesus isoimmunization No
O36..01 Maternal care for anti-D [Rh] antibodies No
O36..011 Maternal care for anti-D [Rh] antibodies, first trimester No
O36..012 Maternal care for anti-D [Rh] antibodies, second trimester No
O36..013 Maternal care for anti-D [Rh] antibodies, third trimester No
O36..019 Maternal care for anti-D [Rh] antibodies, unspecified trimester No
O36..09 Maternal care for other rhesus isoimmunization No
O36..091 Maternal care for other rhesus isoimmunization, first trimester No
O36..092 Maternal care for other rhesus isoimmunization, second trimester No
O36..093 Maternal care for other rhesus isoimmunization, third trimester No
O36..099 Maternal care for other rhesus isoimmunization, unspecified trimester No
O36..1 Maternal care for other isoimmunization No
O36..11 Maternal care for Anti-A sensitization No
O36..111 Maternal care for Anti-A sensitization, first trimester No
O36..112 Maternal care for Anti-A sensitization, second trimester No
O36..113 Maternal care for Anti-A sensitization, third trimester No
O36..119 Maternal care for Anti-A sensitization, unspecified trimester No
O36..19 Maternal care for other isoimmunization No
O36..191 Maternal care for other isoimmunization, first trimester No
O36..192 Maternal care for other isoimmunization, second trimester No
O36..193 Maternal care for other isoimmunization, third trimester No
O36..199 Maternal care for other isoimmunization, unspecified trimester No
O36..2 Maternal care for hydrops fetalis No
O36..20 Maternal care for hydrops fetalis, unspecified trimester No
O36..21 Maternal care for hydrops fetalis, first trimester No
O36..22 Maternal care for hydrops fetalis, second trimester No
O36..23 Maternal care for hydrops fetalis, third trimester No
O36..4 Maternal care for intrauterine death No
O36..5 Maternal care for known or suspected poor fetal growth No
O36..51 Maternal care for known or suspected placental insufficiency No
O36..511 Maternal care for known or suspected placental insufficiency, first trimester No
O36..512 Maternal care for known or suspected placental insufficiency, second trimester No
O36..513 Maternal care for known or suspected placental insufficiency, third trimester No
O36..519 Maternal care for known or suspected placental insufficiency, unspecified trimester No
O36..59 Maternal care for other known or suspected poor fetal growth No
O36..591 Maternal care for other known or suspected poor fetal growth, first trimester No
O36..592 Maternal care for other known or suspected poor fetal growth, second trimester No
O36..593 Maternal care for other known or suspected poor fetal growth, third trimester No
O36..599 Maternal care for other known or suspected poor fetal growth, unspecified trimester No
O36..6 Maternal care for excessive fetal growth No
O36..60 Maternal care for excessive fetal growth, unspecified trimester No
O36..61 Maternal care for excessive fetal growth, first trimester No
O36..62 Maternal care for excessive fetal growth, second trimester No
O36..63 Maternal care for excessive fetal growth, third trimester No
O36..7 Maternal care for viable fetus in abdominal pregnancy No
O36..70 Maternal care for viable fetus in abdominal pregnancy, unspecified trimester No
O36..71 Maternal care for viable fetus in abdominal pregnancy, first trimester No
O36..72 Maternal care for viable fetus in abdominal pregnancy, second trimester No
O36..73 Maternal care for viable fetus in abdominal pregnancy, third trimester No
O36..8 Maternal care for other specified fetal problems No
O36..80 Pregnancy with inconclusive fetal viability No
O36..81 Decreased fetal movements No
O36..812 Decreased fetal movements, second trimester No
O36..813 Decreased fetal movements, third trimester No
O36..819 Decreased fetal movements, unspecified trimester No
O36..82 Fetal anemia and thrombocytopenia No
O36..821 Fetal anemia and thrombocytopenia, first trimester No
O36..822 Fetal anemia and thrombocytopenia, second trimester No
O36..823 Fetal anemia and thrombocytopenia, third trimester No
O36..829 Fetal anemia and thrombocytopenia, unspecified trimester No
O36..83 Maternal care for abnormalities of the fetal heart rate or rhythm No
O36..831 Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester No
O36..832 Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester No
O36..833 Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester No
O36..839 Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimester No
O36..89 Maternal care for other specified fetal problems No
O36..891 Maternal care for other specified fetal problems, first trimester No
O36..892 Maternal care for other specified fetal problems, second trimester No
O36..893 Maternal care for other specified fetal problems, third trimester No
O36..899 Maternal care for other specified fetal problems, unspecified trimester No
O36..9 Maternal care for fetal problem, unspecified No
O36..90 Maternal care for fetal problem, unspecified, unspecified trimester No
O36..91 Maternal care for fetal problem, unspecified, first trimester No
O36..92 Maternal care for fetal problem, unspecified, second trimester No
O36..93 Maternal care for fetal problem, unspecified, third trimester No

Last reviewed: September 2026