O36.59 – Maternal care for other known or suspected poor fetal growth
ICD-10-CM 2027 diagnosis code · Maternal care related to the fetus and amniotic cavity and possible delivery problems
- Code
O36.59(claims format:O3659)- Description
- Maternal care for other known or suspected poor fetal growth
- 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
- Parent codes
- O36 › O36.5
Billable codes under O36.59
O36.59 is a header code and cannot be used on claims. Choose the most specific code:
- O36.591 – Maternal care for other known or suspected poor fetal growth, first trimesterHeader (more codes below)
- O36.592 – Maternal care for other known or suspected poor fetal growth, second trimesterHeader (more codes below)
- O36.593 – Maternal care for other known or suspected poor fetal growth, third trimesterHeader (more codes below)
- O36.599 – Maternal care for other known or suspected poor fetal growth, unspecified trimesterHeader (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 O36.59
- Maternal care for known or suspected light-for-dates NOS
- Maternal care for known or suspected small-for-dates NOS
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
O36 – Maternal care for other fetal problems
- the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy
- labor and delivery complicated by fetal stress (O77.-)
- 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.
Index terms for O36.59
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Restriction, growth, fetal
- Pregnancy, complicated by, fetal, poor growth
- Light-for-dates, affecting management of pregnancy
- Pregnancy, complicated by, fetal, growth retardation
- Pregnancy, complicated by, fetal, poor growth, light for dates
- Pregnancy, complicated by, fetal, poor growth, small for dates
- Pregnancy, complicated by, fetal, growth retardation, light for dates
- Pregnancy, complicated by, fetal, growth retardation, small for dates
Related codes in O36.5
Frequently asked questions
What is ICD-10 code O36.59?
O36.59 is the ICD-10-CM code for maternal care for other known or suspected poor fetal growth, in the block O30-O48 (Maternal care related to the fetus and amniotic cavity and possible delivery problems).
Is O36.59 a billable code?
No. O36.59 is a header code with more specific child codes; report one of the billable codes listed above.
What category does O36.59 belong to?
It belongs to category O36 – Maternal care for other fetal problems.
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.