O36
ICD-10Non-billable categoryMaternal care for other fetal problems
Official ICD-10-CM descriptor (FY2026)
Maternal care for other fetal problems
O36 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- 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. An Excludes1 code should never be reported at the same time as the code above it.
- encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
- placental transfusion syndromes (O43.0-)
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- labor and delivery complicated by fetal stress (O77.-)
7th character
- 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.
Permitted 7th characters
| 0 | not applicable or unspecified |
| 1 | fetus 1 |
| 2 | fetus 2 |
| 3 | fetus 3 |
| 4 | fetus 4 |
| 5 | fetus 5 |
| 9 | other fetus |
More specific codes under O36
- O36.0Maternal care for rhesus isoimmunizationcategory
- O36.1Maternal care for other isoimmunizationcategory
- O36.2Maternal care for hydrops fetaliscategory
- O36.4Maternal care for intrauterine deathcategory
- O36.5Maternal care for known or suspected poor fetal growthcategory
- O36.6Maternal care for excessive fetal growthcategory
- O36.7Maternal care for viable fetus in abdominal pregnancycategory
- O36.8Maternal care for other specified fetal problemscategory
- O36.9Maternal care for fetal problem, unspecifiedcategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.