The RDS messages RXD segment carries the dispense data for a given issuance of medication: thus it may describe a single dose, an half-day dose, a daily dose, a refill of a prescription, etc. It does not contain the given instructions or scheduling information. When this "give" (i.e., administration) information needs to be transmitted from the pharmacy or treatment application to another application, it is done with the RGV message.
The RGV message uses the RXG segment to record drug or treatment administration instructions. It may carry information about a single scheduled administration on a drug or treatment, or it may carry information about multiple administrations. If the pharmacy or treatment application (or some other application) needs to create a nonambiguous MAR report where each administration is matched to a particular give date/time instruction, it may use the RGV message as described in the following way:
For each scheduled administration of the medication, the pharmacy/treatment issues either a single RGV message or a single RGV message with multiple RXG segments, one for each scheduled administration. The actual administrations (transmitted by one or more RAS messages) are matched against the scheduled ones by recording in each RXA segment the Give Sub-ID of the corresponding RXG segment. If more than one administration needs to be matched (as in the case of recording a change or rate of an IV solution) the administering application issues additional RXA segment(s) (corresponding to the same RXG segment). If no matching is needed, the Give Sub-ID of the RXA segments has the value zero (0).
The ORC must have the filler order number and the order control code RE. The RXE and associated RXCs may be present if the receiving application needs any of their data. The RXG carries the scheduled administration data for either a single "give instruction" (single dose) of medication or for multiple "give instructions." The RXG is not a complete record of an order. Use the RXO and RXE segments if a complete order is needed. It is a record from the pharmacy or treatment application to the Nursing application (or other) with drug/treatment administration instructions.
RGV Pharmacy/Treatment Give Chapter
MSH Message Header 2
[{NTE}] Notes and Comments (for Header) 2
[
PID Patient Identification 3
[{NTE}] Notes and Comments (for PID) 2
[{AL1}] Allergy 2
[PV1 Patient Visit 3
[PV2] Patient Visit Additional Information 3
]
{
ORC Common Order 4
[
RXO Pharmacy /Treatment Order 4
[
{NTE} Notes and Comments (for RXO) 2
{RXR} Pharmacy/Treatment Route 4
[
{RXC} Pharmacy/Treatment Component 4
[{NTE}] Notes and Comments (for RXC) 2
]
]
]
[
RXE Pharmacy/Treatment Encoded Order 4
{RXR} Pharmacy/Treatment Route 4
[{RXC}] Pharmacy/Treatment Component 4
]
{
RXG Pharmacy/Treatment Give 4
{RXR} Pharmacy/Treatment Route 4
[{RXC}] Pharmacy/Treatment Component 4
{
[OBX] Observation/Results 7
[{NTE}] Notes and Comments (for OBX) 2
}
}
}
(acknowledged by)
RRG Pharmacy/Treatment Give Acknowledgment Message Chapter
MSH Message Header 2
MSA Message Acknowledgment 2
[ERR] Error 2
[{NTE}] Notes and Comments (for Header) 2
[
[PID Patient Identification 3
[{NTE}]] Notes and Comments (for PID) 2
{
ORC Common Order 4
[
RXG Pharmacy/Treatment Give 4
{RXR} Pharmacy/Treatment Route 4
[{RXC}] Pharmacy/Treatment Component 4
]
}
]