This value set indicates the allowed vital sign result types. The vocabulary selected for this value set align with requirements in the Meaningful Use (MU) Stage 2. Note the concept Blood pressure systolic and diastolic (55284-4) is used to group the related observations Systolic blood pressure (8480-6) and Diastolic blood pressure (8462-4). It SHALL NOT be used alone, but both 8480-6 and 8462-2 SHALL also be valued.