ICD-10 Code O36.599

Maternal care for other known or suspected poor fetal growth, unspecified trimester

Version 2019 Non-Billable Code

Not Valid for Submission

O36.599 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of maternal care for other known or suspected poor fetal growth, unspecified trimester. The code is NOT valid for the year 2019 for the submission of HIPAA-covered transactions.

ICD-10: O36.599
Short Description:Matern care for oth known or susp poor fetal grth, unsp tri
Long Description:Maternal care for other known or suspected poor fetal growth, unspecified trimester

Consider the following ICD-10 codes with a higher level of specificity:

  • O36.5990 - Maternal care for other known or suspected poor fetal growth, unspecified trimester, not applicable or unspecified
  • O36.5991 - Maternal care for other known or suspected poor fetal growth, unspecified trimester, fetus 1
  • O36.5992 - Maternal care for other known or suspected poor fetal growth, unspecified trimester, fetus 2
  • O36.5993 - Maternal care for other known or suspected poor fetal growth, unspecified trimester, fetus 3
  • O36.5994 - Maternal care for other known or suspected poor fetal growth, unspecified trimester, fetus 4
  • O36.5995 - Maternal care for other known or suspected poor fetal growth, unspecified trimester, fetus 5
  • O36.5999 - Maternal care for other known or suspected poor fetal growth, unspecified trimester, other fetus

Code Classification

  • Pregnancy, childbirth and the puerperium (O00–O99)
    • Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
      • Maternal care for other fetal problems (O36)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (first year ICD-10-CM implemented into the HIPAA mandated code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019

Information for Medical Professionals

Diagnostic Related Groups

The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). The diagnosis code O36.599 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.

  • 817 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH MCC
  • 817 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH MCC
  • 817 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH MCC
  • 817 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH MCC
  • 817 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH MCC
  • 817 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH MCC
  • 817 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH MCC
  • 818 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH CC
  • 818 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH CC
  • 818 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH CC
  • 818 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH CC
  • 818 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH CC
  • 818 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH CC
  • 818 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITH CC
  • 819 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITHOUT CC/MCC
  • 819 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITHOUT CC/MCC
  • 819 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITHOUT CC/MCC
  • 819 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITHOUT CC/MCC
  • 819 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITHOUT CC/MCC
  • 819 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITHOUT CC/MCC
  • 819 - OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURE WITHOUT CC/MCC

Information for Patients


Fetal Health and Development

A normal pregnancy lasts nine months. Each three-month period of pregnancy is called a trimester. During each trimester, the fetus grows and develops. Regular medical checkups and prenatal tests are very important. They can

  • Help keep you and your baby healthy
  • Spot problems with your baby (if there are any). In some cases, health care professionals can treat the problem before your baby is born. But even when they cannot, it can still be helpful to know about the problem early on. That gives you time to learn about your baby's condition and prepare for any challenges you may face after the baby is born.
  • Prevent problems during delivery. For example, if your baby is breech (bottom first or feet first, instead of head first), you may need to have a Cesarean section to avoid complications.

Besides getting medical care, there are other things you can do to keep your baby as healthy as possible. It's important not to drink or smoke. Try to eat a healthy diet and make sure to take care of any health problems you have during pregnancy.

  • Fetal development (Medical Encyclopedia)
  • Intrauterine growth restriction (Medical Encyclopedia)

[Learn More]

Health Problems in Pregnancy

Every pregnancy has some risk of problems. You may have problems because of a health condition you had before you got pregnant. You could also develop a condition during pregnancy. Other causes of problems during pregnancy can include being pregnant with more than one baby, a health problem in a previous pregnancy, substance abuse during pregnancy, or being over age 35. Any of these can affect your health, the health of your baby, or both.

If you have a chronic condition, you should talk to your health care provider about how to minimize your risk before you get pregnant. Once you are pregnant, you may need a health care team to monitor your pregnancy. Some common conditions that can complicate a pregnancy include

  • High blood pressure
  • Polycystic ovary syndrome
  • Kidney problems
  • Autoimmune disorders
  • Obesity
  • HIV/AIDS
  • Cancer
  • Infections

Other conditions that can make pregnancy risky can happen while you are pregnant - for example, gestational diabetes and Rh incompatibility. Good prenatal care can help detect and treat them.

Some discomforts, like nausea, back pain, and fatigue, are common during pregnancy. Sometimes it is hard to know what is normal. Call your health care provider if something is bothering or worrying you.

  • Bed rest during pregnancy (Medical Encyclopedia)
  • Hydramnios (Medical Encyclopedia)
  • Hyperemesis gravidarum (Medical Encyclopedia)
  • Insufficient cervix (Medical Encyclopedia)
  • Placenta abruptio (Medical Encyclopedia)
  • Placenta abruptio (Medical Encyclopedia)
  • Placenta previa (Medical Encyclopedia)
  • Vaginal bleeding in early pregnancy (Medical Encyclopedia)
  • Vaginal bleeding in late pregnancy (Medical Encyclopedia)
  • Vaginal bleeding in pregnancy (Medical Encyclopedia)

[Learn More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.