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  6. 2026 ICD-10-CM Code O46

2026 ICD-10-CM Diagnosis Code O46

Antepartum hemorrhage, not elsewhere classified

ICD-10-CM Code:
O46
ICD-10 Code for:
Antepartum hemorrhage, not elsewhere classified
Is Billable?
Not Valid for Submission
Code Navigator:

O46 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of antepartum hemorrhage, not elsewhere classified. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Antepartum hemorrhage, not elsewhere classified

Non-specific codes like O46 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for antepartum hemorrhage, not elsewhere classified:

  • O46.0 for Antepartum hemorrhage with coagulation defect - NON-BILLABLE CODE

  • O46.00 for Antepartum hemorrhage with coagulation defect, unspecified - NON-BILLABLE CODE

  • O46.01 for Antepartum hemorrhage with afibrinogenemia - NON-BILLABLE CODE

  • O46.02 for Antepartum hemorrhage with disseminated intravascular coagulation - NON-BILLABLE CODE

  • O46.09 for Antepartum hemorrhage with other coagulation defect - NON-BILLABLE CODE

  • O46.8 for Other antepartum hemorrhage - NON-BILLABLE CODE

  • O46.8X for Other antepartum hemorrhage - NON-BILLABLE CODE

  • O46.9 for Antepartum hemorrhage, unspecified - NON-BILLABLE CODE

  • Use O46.90 for Antepartum hemorrhage, unspecified, unspecified trimester - BILLABLE CODE

  • Use O46.91 for Antepartum hemorrhage, unspecified, first trimester - BILLABLE CODE

  • Use O46.92 for Antepartum hemorrhage, unspecified, second trimester - BILLABLE CODE

  • Use O46.93 for Antepartum hemorrhage, unspecified, third trimester - BILLABLE CODE

Code Classification

  • Pregnancy, childbirth and the puerperium
    O00-O9A
    • Maternal care related to the fetus and amniotic cavity and possible delivery problems
      O30-O48
      • Antepartum hemorrhage, not elsewhere classified
        O46

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • hemorrhage in early pregnancy O20
  • intrapartum hemorrhage NEC O67
  • placenta previa O44
  • premature separation of placenta abruptio placentae O45

Patient Education


Health Problems in Pregnancy

What are 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.

But just because you have health problems, it doesn't mean that you, or your fetus, will have a problem during the pregnancy. Taking care of yourself and getting early and regular prenatal care from a health care provider may help you reduce pregnancy risks from health problems.

What raises my risk for health problems during pregnancy?

Every pregnancy has some risk of problems, but your lifestyle, as well as factors like certain conditions and health issues, can raise that risk, such as:

  • A health condition you had before you got pregnant
  • A health condition you develop during pregnancy
  • A pregnancy with more than one baby
  • A health problem that happened during a previous pregnancy and could happen again
  • Substance use during pregnancy
  • Being over age 35

Any of these can affect your health, the health of your fetus, or both.

Can chronic health conditions cause problems in pregnancy?

Every pregnancy is different. If you have specific risks in one pregnancy, it doesn't mean that you will have them in another. But, if you have a chronic condition, you should talk to your 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 (PCOS)
  • Kidney problems
  • Autoimmune disorders
  • Thyroid disease
  • Obesity
  • HIV
  • Cancer
  • Infections

Other conditions that may make pregnancy risky can develop during pregnancy - for example, gestational diabetes and Rh incompatibility.

Can health problems in pregnancy be prevented?

You may be able to lower your risk of certain health problems by making healthy lifestyle changes before you get pregnant. These can include reaching a healthy weight, not smoking, and managing any health conditions.

However, health problems during pregnancy are not always preventable. Some chronic conditions can be treated and controlled, while others aren't treatable and carry a higher risk than usual, even if the health problem is well-managed.

Share your symptoms with your provider for early detection and treatment of health problems. Sometimes, it's hard to know what's normal. Some symptoms, like nausea, back pain, and fatigue, are common during pregnancy, while other symptoms, like vaginal bleeding or a severe or long-lasting headache, can be signs of a problem. Call your provider to let them know if something is bothering or worrying you.


[Learn More in MedlinePlus]

Vaginal Bleeding

Menstruation, or period, is a woman's monthly bleeding. Abnormal vaginal bleeding is different from normal menstrual periods. It could be bleeding that is between periods, is very heavy, or lasts much longer than usual. It also includes bleeding that happens before puberty or after menopause. Causes can include:

  • Uterine fibroids or polyps
  • Hormone problems
  • Hormone pills, such as birth control pills and hormone replacement therapy (menopausal hormone therapy)
  • Cancer of the cervix, ovaries, uterus or vagina
  • Thyroid problems

Bleeding during pregnancy can have several different causes. It is not always serious, but to be safe you should contact your health care provider right away.

Pelvic exams, blood tests, imaging tests, and other procedures can help your health care provider diagnose the problem. Treatment depends on the cause. Treatments may include medicines, hormones, and surgery.


[Learn More in MedlinePlus]

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
  • FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.