O36 – Maternal care for other fetal problems

ICD-10-CM 2027 diagnosis code · Maternal care related to the fetus and amniotic cavity and possible delivery problems

Non-billable header

ICD-10-CM code O36

Code: O36 (claims format: O36)
Description: Maternal care for other fetal problems
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems

Billable codes under O36

O36 is a header code and cannot be used on claims. Choose the most specific code:

O36.0 – Maternal care for rhesus isoimmunizationHeader (more codes below)
O36.1 – Maternal care for other isoimmunizationHeader (more codes below)
O36.2 – Maternal care for hydrops fetalisHeader (more codes below)
O36.4 – Maternal care for intrauterine deathHeader (more codes below)
O36.5 – Maternal care for known or suspected poor fetal growthHeader (more codes below)
O36.6 – Maternal care for excessive fetal growthHeader (more codes below)
O36.7 – Maternal care for viable fetus in abdominal pregnancyHeader (more codes below)
O36.8 – Maternal care for other specified fetal problemsHeader (more codes below)
O36.9 – Maternal care for fetal problem, unspecifiedHeader (more codes below)

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).

Character	Meaning
`0`	not applicable or unspecified
`1`	fetus 1
`2`	fetus 2
`3`	fetus 3
`4`	fetus 4
`5`	fetus 5
`9`	other fetus

Notes for O36

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):

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

Excludes2 (not included here):

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

7th character note:

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.

Frequently asked questions

What is ICD-10 code O36?

O36 is the ICD-10-CM code for maternal care for other fetal problems, in the block O30-O48 (Maternal care related to the fetus and amniotic cavity and possible delivery problems).

Is O36 a billable code?

No. O36 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.