Important Update: New Warning for RX6 Segment in HL7 Messaging

HL7 Messages are used to transmit vaccine information from immunization providers to MCIR.  Some of the vaccine details are expressed in a segment prefixed with RXA.  Included in that segment are the Dose Volume (a number) and Unit (cc or ml). Those values are contained in RXA-6 (volume), and RXA-7 (unit)

Starting July 31, 2024, MCIR will indicate a warning in the acknowledgment message returned when the RX6 segment is missing or incomplete. This initiative aligns with best practices for HL7 messaging to ensure the accuracy and completeness of patient information. The warning will display as:

“Warning: MCIR highly recommends providing a dose volume and a dose unit of cc or ml”

Example of a Complete RX6 Segment: RXA|0|1|20140221||115^Tdap^CVX^58160-0842-52^Boostrix (Tdap)^NDC|0.5|ml^milliliters^UCUM||00^Administered^NIP001||||||K7164HI||SKB^GlaxoSmithKline^MVX||||A

If you have any questions or need further assistance, please contact us at MDHHS-HL7@michigan.gov