2025 ICD-10-CM code O10.911
Unspecified pre-existing hypertension complicating pregnancy, first trimester.
The medical necessity for this code stems from the potential risks associated with pre-existing hypertension during pregnancy, both for the mother and the fetus. Careful monitoring and management of hypertension in pregnancy are crucial for preventing serious complications like pre-eclampsia, placental abruption, and fetal growth restriction.
Diagnosis and management of the hypertensive disorder during pregnancy falls under the purview of obstetricians, maternal-fetal medicine specialists, or other healthcare providers specializing in high-risk pregnancies.They are responsible for monitoring blood pressure, assessing for signs of pre-eclampsia or other complications, ordering necessary lab tests, prescribing antihypertensive medications if necessary, and providing counseling regarding lifestyle modifications and potential risks.
- Chapter 15: Pregnancy, childbirth and the puerperium
- O10-O16: Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
In simple words: A pregnant woman has high blood pressure that was present before she became pregnant, during the first three months of pregnancy.
This code describes a condition where a pregnant woman has pre-existing hypertension (high blood pressure) that is not further specified, during the first trimester of her pregnancy.The first trimester is defined as being from the first day of the last menstrual period up to 14 weeks 0 days.
Example 1: A 32-year-old woman in her 10th week of pregnancy (first trimester) presents for a routine prenatal check-up. She has a history of chronic hypertension diagnosed several years before this pregnancy. Her blood pressure is currently well controlled with medication.She has no signs or symptoms of pre-eclampsia. O10.911 is the appropriate code., A 28-year-old pregnant woman at 12 weeks gestation is seen for her first prenatal appointment.She reports that she was prescribed medication for high blood pressure before getting pregnant. She is currently asymptomatic, but her blood pressure is elevated at today's visit.O10.911 would be used to code her pre-existing hypertension in the first trimester., A woman with a known history of hypertension is seen at 8 weeks gestation. She experiences dizziness. Her blood pressure is measured as 150/95 mmHg.Blood tests and urine analysis are ordered to rule out other complications like pre-eclampsia or gestational hypertension.Given the patient's history and current blood pressure readings, O10.911 is applied.
Documentation should clearly indicate the patient's history of hypertension prior to the pregnancy and blood pressure readings during the current pregnancy. The trimester of the pregnancy must be documented,along with any associated symptoms, medications used to control blood pressure, and other relevant clinical findings.
** This code describes a condition affecting the mother and should never be used on the newborn's record.
- Specialties:Obstetrics, Maternal-Fetal Medicine, Family Medicine
- Place of Service:Office, Inpatient Hospital, Outpatient Hospital