Severe pre-eclampsia, second trimester

This code signifies a severe form of pre-eclampsia, a serious pregnancy complication characterized by high blood pressure and signs of organ damage, specifically when diagnosed during the second trimester of gestation. It indicates the presence of severe features such as severe hypertension, proteinuria, or other organ dysfunction (e.g., renal insufficiency, liver involvement, neurological symptoms, thrombocytopenia).

Use this code when documentation clearly states a diagnosis of "severe pre-eclampsia" and specifies that the onset or diagnosis occurred during the second trimester (weeks 14 through 27+6 days of gestation). Supporting documentation should detail the specific severe features present, such as blood pressure readings (e.g., systolic $\ge$160 mmHg or diastolic $\ge$110 mmHg), laboratory findings (e.g., elevated liver enzymes, low platelet count, creatinine $\ge$1.1 mg/dL), or clinical symptoms.

• Always verify the trimester of diagnosis; pre-eclampsia can also occur in the first or third trimester, or postpartum.
• Ensure the documentation explicitly states "severe" pre-eclampsia and lists the specific severe features to justify this level of specificity.
• Do not confuse with gestational hypertension or pre-eclampsia without severe features; these conditions have different code assignments.