Pre-exist hyp heart disease comp pregnancy, first trimester

This code signifies a pregnant patient in her first trimester who has a pre-existing diagnosis of hypertensive heart disease. This condition involves structural and functional changes to the heart (e.g., left ventricular hypertrophy, heart failure) caused by chronic hypertension, which is now complicating the current pregnancy.

Apply this code when documentation clearly indicates a pre-existing diagnosis of hypertensive heart disease in a pregnant patient during the first trimester. This includes scenarios where the heart disease is being managed or monitored due to its potential impact on the pregnancy. Supporting documentation would include a history of hypertension with cardiac involvement noted prior to or at the onset of pregnancy.

• Always confirm the specific trimester of pregnancy from the medical record.
• Distinguish pre-existing hypertensive heart disease from gestational hypertension or pre-eclampsia.
• Code any associated heart failure or other cardiac complications separately, if documented.