ICD-10-CM Code O99.3

Mental disorders and diseases of the nervous system complicating pregnancy, childbirth and the puerperium

Version 2020 Non-Billable Code

Not Valid for Submission

O99.3 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of mental disorders and diseases of the nervous system complicating pregnancy, childbirth and the puerperium. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:O99.3
Short Description:Mental disord and dis of the nervous sys compl preg/chldbrth
Long Description:Mental disorders and diseases of the nervous system complicating pregnancy, childbirth and the puerperium

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

  • O99.31 - Alcohol use complicating pregnancy, childbirth, and the puerperium
  • O99.310 - Alcohol use complicating pregnancy, unspecified trimester
  • O99.311 - Alcohol use complicating pregnancy, first trimester
  • O99.312 - Alcohol use complicating pregnancy, second trimester
  • O99.313 - Alcohol use complicating pregnancy, third trimester
  • O99.314 - Alcohol use complicating childbirth
  • O99.315 - Alcohol use complicating the puerperium
  • O99.32 - Drug use complicating pregnancy, childbirth, and the puerperium
  • O99.320 - Drug use complicating pregnancy, unspecified trimester
  • O99.321 - Drug use complicating pregnancy, first trimester
  • O99.322 - Drug use complicating pregnancy, second trimester
  • O99.323 - Drug use complicating pregnancy, third trimester
  • O99.324 - Drug use complicating childbirth
  • O99.325 - Drug use complicating the puerperium
  • O99.33 - Tobacco use disorder complicating pregnancy, childbirth, and the puerperium
  • O99.330 - Smoking (tobacco) complicating pregnancy, unspecified trimester
  • O99.331 - Smoking (tobacco) complicating pregnancy, first trimester
  • O99.332 - Smoking (tobacco) complicating pregnancy, second trimester
  • O99.333 - Smoking (tobacco) complicating pregnancy, third trimester
  • O99.334 - Smoking (tobacco) complicating childbirth
  • O99.335 - Smoking (tobacco) complicating the puerperium
  • O99.34 - Other mental disorders complicating pregnancy, childbirth, and the puerperium
  • O99.340 - Other mental disorders complicating pregnancy, unspecified trimester
  • O99.341 - Other mental disorders complicating pregnancy, first trimester
  • O99.342 - Other mental disorders complicating pregnancy, second trimester
  • O99.343 - Other mental disorders complicating pregnancy, third trimester
  • O99.344 - Other mental disorders complicating childbirth
  • O99.345 - Other mental disorders complicating the puerperium
  • O99.35 - Diseases of the nervous system complicating pregnancy, childbirth, and the puerperium
  • O99.350 - Diseases of the nervous system complicating pregnancy, unspecified trimester
  • O99.351 - Diseases of the nervous system complicating pregnancy, first trimester
  • O99.352 - Diseases of the nervous system complicating pregnancy, second trimester
  • O99.353 - Diseases of the nervous system complicating pregnancy, third trimester
  • O99.354 - Diseases of the nervous system complicating childbirth
  • O99.355 - Diseases of the nervous system complicating the puerperium

Code Classification

  • Pregnancy, childbirth and the puerperium (O00–O99)
    • Other obstetric conditions, not elsewhere classified (O94-O9A)
      • Oth maternal diseases classd elsw but compl preg/chldbrth (O99)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA 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
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


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.


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Mental Disorders

What are mental disorders?

Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may be occasional or long-lasting (chronic). They can affect your ability to relate to others and function each day.

What are some types of mental disorders?

There are many different types of mental disorders. Some common ones include

  • Anxiety disorders, including panic disorder, obsessive-compulsive disorder, post-traumatic stress disorder, and phobias
  • Depression, bipolar disorder, and other mood disorders
  • Eating disorders
  • Personality disorders
  • Psychotic disorders, including schizophrenia

What causes mental disorders?

There is no single cause for mental illness. A number of factors can contribute to risk for mental illness, such as

  • Your genes and family history
  • Your life experiences, such as stress or a history of abuse, especially if they happen in childhood
  • Biological factors such as chemical imbalances in the brain
  • A traumatic brain injury
  • A mother's exposure to viruses or toxic chemicals while pregnant
  • Use of alcohol or recreational drugs
  • Having a serious medical condition like cancer
  • Having few friends, and feeling lonely or isolated

Mental disorders are not caused by character flaws. They have nothing to do with being lazy or weak.

Who is at risk for mental disorders?

Mental disorders are common. More than half of all Americans will be diagnosed with a mental disorder at some time in their life.

How are mental disorders diagnosed?

The steps to getting a diagnosis include

  • A medical history
  • A physical exam and possibly lab tests, if your provider thinks that other medical conditions could be causing your symptoms
  • A psychological evaluation. You will answer questions about your thinking, feelings, and behaviors.

What are the treatments for mental disorders?

Treatment depends on which mental disorder you have and how serious it is. You and your provider will work on a treatment plan just for you. It usually involves some type of therapy. You may also take medicines. Some people also need social support and education on managing their condition.

In some cases, you may need more intensive treatment. You may need to go to a psychiatric hospital. This could be because your mental illness is severe. Or it could be because you are at risk of hurting yourself or someone else. In the hospital, you will get counseling, group discussions, and activities with mental health professionals and other patients.


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