Sample HL7 ADT A04 Message

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A “register patient” message (A04 event) signals that the patient has arrived or checked in as an outpatient, recurring outpatient, or emergency room patient. 

Note: Users may be able to configure their system to process, or not process (ignore), some (or all) outpatient and emergency room registrations; in either case an “application accept” acknowledgement will be returned to the sender.

This message uses the same segments as the “admit patient” (A01) message.

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Below is an example HL7 message. The demographics are fictitious and no real patient data has been included.

MSH|^~\&|ADT1|MCM|LABADT|MCM|198808181126|SECURITY|ADT^A04|MSG00001|P|2.4

EVN|A01-|198808181123
PID|||PATID1234^5^M11||JONES^WILLIAM^A^III||19610615|M-||2106-3|1200 N ELM STREET^^GREENSBORO^NC^27401-1020|GL|(919)379-1212|(919)271-3434~(919)277-3114||S||PATID12345001^2^M10|123456789|9-87654^NC
NK1|1|JONES^BARBARA^K|SPO|||||20011105
NK1|1|JONES^MICHAEL^A|FTH
PV1|1|I|2000^2012^01||||004777^LEBAUER^SIDNEY^J.|||SUR||-||1|A0-
AL1|1||^PENICILLIN||PRODUCES HIVES~RASH
AL1|2||^CAT DANDER
DG1|001|I9|1550|MAL NEO LIVER, PRIMARY|19880501103005|F||
PR1|2234|M11|111^CODE151|COMMON PROCEDURES|198809081123
ROL|45^RECORDER^ROLE MASTER LIST|AD|CP|KATE^SMITH^ELLEN|199505011201
GT1|1122|1519|BILL^GATES^A
IN1|001|A357|1234|BCMD|||||132987
IN2|ID1551001|SSN12345678
ROL|45^RECORDER^ROLE MASTER LIST|AD|CP|KATE^ELLEN|199505011201

Other examples of ADT messages are:

• ADT-A01 – patient admit
• ADT-A02 – patient transfer
• ADT-A03 – patient discharge
• ADT-A04 – patient registration
• ADT-A05 – patient pre-admission
• ADT-A08 – patient information update
• ADT-A11 – cancel patient admit
• ADT-A12 – cancel patient transfer
• ADT-A13 – cancel patient discharge

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