Benign hypertension or benign essential hypertension are historical terms that are considered misleading, as

hypertension Hypertension (HTN or HT), also known as high blood pressure (HBP), is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. High blood pressure usually does not cause symptoms. Long-term high bl ...

is never benign, and consequently they have fallen out of use (see history of hypertension). The terminology persisted in the

International Classification of Disease The International Classification of Diseases (ICD) is a globally used diagnostic tool for epidemiology, health management and clinical purposes. The ICD is maintained by the World Health Organization (WHO), which is the directing and coordinating ...

(ICD9), but is not included in the current ICD10.

References

Hypertension {{med-hist-stub