Description: Section 3.5.1 (Subset Operators and Specific Occurrences) of Clinical Quality eMeasure Logic and Implementation Guidance v1.3 states:

The following example shows a specific occurrence with a subset operator applied.

AND: FIRST: Occurrence A of X during "Measurement Period"

AND: Occurrence A of X starts after start of Encounter Performed Y

In this example, the defined order of operations restricts 'Occurrence A of X' to the first event X during the measurement period and that first event X must have an encounter of type Y that starts after the start of it.

The interpretation of the relationship between X and Y is incorrect, indicating that Y must start after X. The criterion states that X starts after Y so the statement should be:

In this example, the defined order of operations restricts 'Occurrence A of X' to the first event X during the measurement period and that first event X must start after the start of an encounter of type Y.