Excessive vomiting in pregnancy (O21)
The ICD-10 code section O21 covers excessive vomiting during pregnancy, capturing various severities and related complications. These codes are used for diagnosing and documenting conditions ranging from mild to severe vomiting that impacts pregnancy health.
This section includes O21.0, representing mild or moderate hyperemesis gravidarum, a condition also known simply as "hyperemesis" or "moderate hyperemesis gravidarum." More severe cases involving metabolic imbalances like dehydration or electrolyte disturbances are classified under O21.1, which specifies hyperemesis gravidarum with metabolic disturbance occurring before 22 weeks gestation. Vomiting that happens later in pregnancy, such as during the third trimester, falls under O21.2, commonly referred to as "late vomiting of pregnancy." The code O21.8 covers other vomiting causes related to organic diseases complicating pregnancy. Finally, O21.9 is used when vomiting of pregnancy is not further specified and includes related terms like nausea, morning sickness, or vomiting that complicates pregnancy and childbirth. These distinctions help healthcare providers accurately code and manage excessive vomiting in pregnancy depending on timing, severity, and underlying issues.
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Hyperemesis Gravidarum
Intractable VOMITING that develops in early PREGNANCY and persists. This can lead to DEHYDRATION and WEIGHT LOSS.
Morning Sickness
Symptoms of NAUSEA and VOMITING in PREGNANT PEOPLE that usually occur in the morning during the first 2 to 3 months of PREGNANCY. Severe persistent vomiting during pregnancy is called HYPEREMESIS GRAVIDARUM.
