Unsp pre-existing htn comp pregnancy, unsp trimester

This code signifies a pregnant patient with a pre-existing diagnosis of hypertension that is not further specified as essential, secondary, or gestational, and the specific trimester of pregnancy is not documented. It indicates that the hypertension was present before conception or diagnosed before 20 weeks of gestation.

Use this code when the medical record clearly states pre-existing hypertension in a pregnant patient, but lacks specificity regarding the type of hypertension or the trimester. This code is appropriate when the provider has not documented whether the hypertension is essential, secondary, or gestational, and the trimester is also not specified.

• Avoid using this code if more specific documentation regarding the type of hypertension (e.g., essential, secondary) or the trimester is available.
• Always sequence this code as a primary diagnosis when the hypertension is the primary reason for the encounter.
• Review the entire medical record for any clues regarding the type of hypertension or trimester before defaulting to this unspecified code.