Unspecified maternal hypertension, first trimester

This code signifies a diagnosis of high blood pressure in a pregnant patient during her first trimester, where the specific type of hypertension (e.g., pre-existing, gestational, pre-eclampsia) has not yet been determined or documented. It indicates an elevated blood pressure reading requiring further evaluation.

Use this code when a pregnant patient in her first trimester presents with documented hypertension, but the provider's notes do not specify the etiology or classification of the hypertension. It is appropriate for initial encounters where hypertension is identified but not fully characterized.

• Avoid using this code if the type of hypertension is clearly documented (e.g., pre-existing essential hypertension, gestational hypertension).
• Always seek clarification from the provider if the documentation is ambiguous regarding the type of hypertension.
• This code should be followed by a more specific hypertension code once the diagnosis is confirmed in subsequent encounters.