Hi Team,

Consider statements below from ** CMS871v3.

One of the IPP criteria states:

Encounter with Elevated Glucose Greater Than or Equal to 200:

"Encounter with Hospitalization Period" Hospitalization

with ["Laboratory Test, Performed": "Glucose Lab Test Mass Per Volume"] GlucoseTest

such that Global."EarliestOf" ( GlucoseTest.relevantDatetime, GlucoseTest.relevantPeriod ) during Hospitalization.hospitalizationPeriod

and GlucoseTest.result >= 200 'mg/dL'

 return Hospitalization.encounter

Functions:
Global.EarliestOf(pointInTime DateTime, period Interval<DateTime>)
Earliest(NormalizeInterval(pointInTime, period))

Global.Earliest(period Interval<DateTime>)
if ( HasStart(period)) then start of period
else
end of period

Global.HasStart(period Interval<DateTime>)
not ( start of period is null
or start of period = minimum DateTime
)

Queries :

1. The functionality states Global. Earliestof ,Please help us understand how do we interpret it?

2. Global.HasStart(period Interval<DateTime>)
not ( start of period is null
or start of period = minimum DateTime)
Kindly provide more clarity on the above functionality. should the start of period be considered Not Null and what does start of period = minimum DateTime mean?