2027 ICD-10-CM Diagnosis Code O36Maternal care for other fetal problems

ICD-10-CM Codes›O00-O9A›O30-O48›O36

ICD-10-CM O36
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

O36 is a non-billable ICD-10-CM category code for maternal care for other fetal problems, so it cannot be submitted on claims. Use a more specific code from this category instead, such as O36.0110, O36.0111, O36.0112, and O36.0113.

Code Identity

ICD-10-CM Code
O36
Billable Status
No — Non-Billable Category
Code Describes
Maternal care for other fetal problems
Short Description
Maternal care for other fetal problems
Same as the full description in the CMS dataset.
Chapter
O30-O48
Maternal care related to the fetus and amniotic cavity and possible delivery problems

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems
CategoryO36Maternal care for other fetal problems
This CodeO36Maternal care for other fetal problems

Specific Coding for Maternal care for other fetal problemsOverview

Non-specific codes like O36 require more characters. Use one of these billable codes instead:

  • O36.0 for Maternal care for rhesus isoimmunization

  • O36.01 for Maternal care for anti-D [Rh] antibodies

  • O36.09 for Maternal care for other rhesus isoimmunization

  • O36.1 for Maternal care for other isoimmunization

  • O36.11 for Maternal care for Anti-A sensitization

  • O36.19 for Maternal care for other isoimmunization

  • O36.2 for Maternal care for hydrops fetalis

  • O36.20 for Maternal care for hydrops fetalis, unspecified trimester

  • O36.21 for Maternal care for hydrops fetalis, first trimester

  • O36.22 for Maternal care for hydrops fetalis, second trimester

  • O36.23 for Maternal care for hydrops fetalis, third trimester

  • O36.4 for Maternal care for intrauterine death

  • O36.5 for Maternal care for known or suspected poor fetal growth

  • O36.51 for Maternal care for known or suspected placental insufficiency

  • O36.59 for Maternal care for other known or suspected poor fetal growth

  • O36.6 for Maternal care for excessive fetal growth

  • O36.60 for Maternal care for excessive fetal growth, unspecified trimester

  • O36.61 for Maternal care for excessive fetal growth, first trimester

  • O36.62 for Maternal care for excessive fetal growth, second trimester

  • O36.63 for Maternal care for excessive fetal growth, third trimester

  • O36.7 for Maternal care for viable fetus in abdominal pregnancy

  • O36.70 for Maternal care for viable fetus in abdominal pregnancy, unspecified trimester

  • O36.71 for Maternal care for viable fetus in abdominal pregnancy, first trimester

  • O36.72 for Maternal care for viable fetus in abdominal pregnancy, second trimester

  • O36.73 for Maternal care for viable fetus in abdominal pregnancy, third trimester

  • O36.8 for Maternal care for other specified fetal problems

  • O36.80 for Pregnancy with inconclusive fetal viability

  • O36.81 for Decreased fetal movements

  • O36.82 for Fetal anemia and thrombocytopenia

  • O36.83 for Maternal care for abnormalities of the fetal heart rate or rhythm

  • O36.89 for Maternal care for other specified fetal problems

  • O36.9 for Maternal care for fetal problem, unspecified

  • O36.90 for Maternal care for fetal problem, unspecified, unspecified trimester

  • O36.91 for Maternal care for fetal problem, unspecified, first trimester

  • O36.92 for Maternal care for fetal problem, unspecified, second trimester

  • O36.93 for Maternal care for fetal problem, unspecified, third trimester

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to O36: its own notes plus those printed at Chapter 15. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

  • 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: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On O36 itself
  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
  • placental transfusion syndromes (O43.0-)
From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • supervision of normal pregnancy (Z34.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On O36 itself
  • labor and delivery complicated by fetal stress (O77.-)
From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Notes

General instructions on how these codes are used.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
  • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
  • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
  • 1st trimester- less than 14 weeks 0 days
  • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
  • 3rd trimester- 28 weeks 0 days until delivery

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • 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.
Values for category O36 Fetus Identification
  • 0not applicable or unspecified
  • 1fetus 1
  • 2fetus 2
  • 3fetus 3
  • 4fetus 4
  • 5fetus 5
  • 9other fetus

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name O36, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming O36: they are not reported together with it, unless the two conditions are unrelated.

  • Z03.7 Encounter for suspected maternal and fetal conditions ruled out
    known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)

Patient EducationClinical

Health Problems in Pregnancy

A health problem in pregnancy is any disease or condition that could affect your health or the health of your fetus. Some health problems may make it more likely that you will have a high-risk pregnancy. A high-risk pregnancy is one in which you, your fetus, or both are at higher risk for health problems than in a typical pregnancy.

The full article covers:

  • What are health problems in pregnancy?
  • What raises my risk for health problems during pregnancy?
  • Can chronic health conditions cause problems in pregnancy?
  • Can health problems in pregnancy be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About O36Overview

What is the ICD-10 code for maternal care for other fetal problems?

O36 is the ICD-10-CM category for maternal care for other fetal problems, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is O36 (Maternal care for other fetal problems) a billable code?

No. This is a category header that groups the codes for maternal care for other fetal problems, and headers cannot be submitted on claims. Claims for maternal care for other fetal problems need a more specific code from this category, such as O36.0110, O36.0111, and O36.0112.

Can O36 be reported with a code from Z03.7?

Not as a rule. The Excludes1 note on O36 lists "encounter for suspected maternal and fetal conditions ruled out (Z03.7-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).