ICD-10-CM O36: Maternal care for other fetal problems

ICD-10-CM Diagnosis Code (2025)

Official Description for O36

Maternal care for other fetal problems

Coding Notes & Guidelines for O36

Includes Notes

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

Excludes1: Not Coded Here
  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
  • placental transfusion syndromes (O43.0-)
Excludes1: Not Coded Here
  • hydrops fetalis associated with ABO isoimmunization (O36.1-)
  • hydrops fetalis associated with rhesus isoimmunization (O36.0-)
Excludes1: Not Coded Here
  • missed abortion (O02.1)
  • stillbirth (P95)
Excludes2: Not Included Here

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

Inclusion Terms

Maternal care for Rh incompatibility (with hydrops fetalis)

Inclusion Terms

Maternal care for ABO isoimmunization

Inclusion Terms

Maternal care for isoimmunization NOS (with hydrops fetalis)

Inclusion Terms

Maternal care for Anti-B sensitization

Inclusion Terms
  • Maternal care for hydrops fetalis NOS
  • Maternal care for hydrops fetalis not associated with isoimmunization
Inclusion Terms
  • 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
Inclusion Terms
  • Maternal care for known or suspected light-for-dates NOS
  • Maternal care for known or suspected small-for-dates NOS
Inclusion Terms

Maternal care for known or suspected large-for-dates

Inclusion Terms

Encounter to determine fetal viability of pregnancy

Inclusion Terms
  • 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
7th Character Guidance

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.

7th Character Definitions
  • 0: not applicable or unspecified
  • 1: fetus 1
  • 2: fetus 2
  • 3: fetus 3
  • 4: fetus 4
  • 5: fetus 5
  • 9: other fetus

Child Codes (More Specific Codes for O36):

O36.0 - Maternal care for rhesus isoimmunization 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 O36.1 - Maternal care for other isoimmunization O36.11 - Maternal care for Anti-A sensitization 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 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 O36.2 - Maternal care for hydrops fetalis 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 O36.4 - Maternal care for intrauterine death 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 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 O36.6 - Maternal care for excessive fetal growth 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 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 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 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

About ICD-10-CM Code O36 (Maternal care for other fetal problems)

ICD-10-CM code O36 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM O36 became effective on October 1, 2024.

This page provides detailed information about O36 - Maternal care for other fetal problems. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Maternal care for other fetal problems.