The Phase Gate Review methodology improves project effectiveness by reviewing all stages of the project from the initial selection process through the entire process of development to the final stages of closure.
Systemic hypertension, or high blood pressure, is associated with hypertensive vascular disease and is a problem that is widespread. The term systemic distinguishes the condition from a local high blood pressure as in pulmonary (lung) or portal hypertension (hepatic portal system).
Print Email. Learn all about ICD 9 Hypertension Essential (401) codes for hypertension 401.0, 401.1, 401.9 for malignant, benign and unspecified essential hypertension. Essential hypertension means that the cause of high blood pressure is not known. Essential hypertension is the term used to describe high blood pressure.