2025 ICD-10-CM code O10.919
Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester.
Medical necessity for services related to pre-existing hypertension complicating pregnancy is established by the diagnosis of hypertension and the need for ongoing monitoring and management to ensure the health of both mother and fetus.The physician's documentation should support the need for interventions and treatments.
The physician is responsible for documenting the patient's pre-existing hypertension and monitoring blood pressure during pregnancy. Appropriate management and treatment should be provided to control blood pressure and minimize risks to both mother and fetus.
- Chapter 15: Pregnancy, childbirth and the puerperium
- O10-O16: Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperiumO10: Pre-existing hypertension complicating pregnancy, childbirth and the puerperiumO10.9: Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperiumO10.91: Unspecified pre-existing hypertension complicating pregnancyO10.919: Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester
In simple words: This code indicates that the patient had high blood pressure before getting pregnant, and it's still present during her pregnancy.It's not specified how far along in the pregnancy she is.
This code describes a condition where a patient has pre-existing hypertension (high blood pressure) before becoming pregnant, and this condition continues during pregnancy.The trimester of pregnancy is not specified.
Example 1: A 30-year-old woman with a history of hypertension becomes pregnant. Her blood pressure remains elevated during her pregnancy, without any other symptoms. The trimester is not specified in the documentation, so O10.919 is used., A pregnant woman in her second trimester presents for a routine check-up. Her medical history indicates pre-existing hypertension. While the trimester is known, the documentation specifically states "unspecified trimester" along with mentioning the diagnosis.Therefore, O10.919 is used, reflecting the provided documentation., A pregnant woman with pre-existing hypertension experiences worsening blood pressure during an unspecified trimester, requiring medication adjustments. Code O10.919 is used to represent the underlying pre-existing hypertension, and additional codes are used for any resulting complications or treatments.
Documentation should clearly state the patient's history of hypertension prior to pregnancy and confirm its presence during the pregnancy.While the trimester is unspecified for this code, it is best practice to document it whenever known. Additional documentation about the severity of the hypertension, medications, and associated symptoms/findings is essential for accurate coding and appropriate management.
** It's crucial to distinguish between pre-existing hypertension and gestational hypertension or pre-eclampsia. This distinction influences treatment decisions and coding accuracy.If the documentation refers to chronic hypertension, it supports the use of code O10.919. If the documentation provides conflicting information about the trimester (e.g., mentions both "second trimester" and "unspecified trimester"), query the provider for clarification.
- Payment Status: Active
- Specialties:Obstetrics and Gynecology, Maternal-Fetal Medicine
- Place of Service:Office, Inpatient Hospital, On Campus-Outpatient Hospital,Outreach Site/Street, Federally Qualified Health Center, Rural Health Clinic