4.4 QUANTITY/TIMING (TQ) DEFINITION
Components: <quantity (CQ)> ^ <interval (CM)> ^ <duration (ST)> ^ <start date/time (TS)> ^ <end date/time (TS)> ^ <priority (ST)> ^ <condition (ST)> ^ <text (TX)> ^ <conjunction (ST)> ^ <order sequencing (CM)>
Definition: Quantity/timing (ORC-7, OBR-27) provides a means of specifying when the service described by the order segment is to be performed and how frequently. It is a complex multicomponent field that can have repeats; i.e., more than one quantity/timing specification, separated by repeat delimiters, may appear. It is a distinct data type (see Section 2.8.41, "TQ - timing quantity"). The components of a single quantity/timing specification are described in the Sections: 4.4.1, "OVERVIEW," through 4.4.10, "Order sequencing component (CM)."