Message type

Unsolicited initial individual product experience report

Reports an initial individual product experience (adverse event) to a safety monitoring system. The PES segment identifies the sender and PEO segments carry the product experience observations.

42segments

17required

7groups

v2.9HL7 version

# Zato
from zato.hl7v2 import HL7Message

# An incoming message ..
raw = 'MSH|^~\&|SENDER|FAC|RCV|DEST|20260701||' \
      'PEX^P07^PEX_P07|MSG001|P|2.9\r' \
      'PID|1||MRN-10045||SMITH^JOHN||19850315|M\r' \
      'PV1|1|I|MED^201^A'

# .. parsed into a Python object ..
msg = HL7Message.parse(raw)

# .. whose fields we can now access.
name = msg.pid.patient_name
dob = msg.pid.date_time_of_birth
patient_class = msg.pv1.patient_class
location = msg.pv1.assigned_patient_location

Python examples

Build and parse PEX^P07 messages in Python

How to construct, send, receive, and extract fields from real-world PEX^P07 messages.

Parse an incoming PEX^P07 message

Demonstrates receiving and extracting key fields from a unsolicited initial individual product experience report transaction

# Zato
from zato.hl7v2 import HL7Message

# An incoming message ..
raw = 'MSH|^~\&|SENDER|FAC|RCV|DEST|20260701||' \
      'PEX^P07^PEX_P07|MSG001|P|2.9\r' \
      'PID|1||MRN-10045||SMITH^JOHN||19850315|M\r' \
      'PV1|1|I|MED^201^A'

# .. parsed into a Python object ..
msg = HL7Message.parse(raw)

# .. whose fields we can now access.
name = msg.pid.patient_name
dob = msg.pid.date_time_of_birth
patient_class = msg.pv1.patient_class
location = msg.pv1.assigned_patient_location

Tutorials

Learn by building

Step-by-step guides for working with HL7 v2 in Zato.

MLLP

Receive and parse HL7 v2 messages

Set up an MLLP channel, parse incoming messages, and respond with acknowledgments.

Start tutorial Build

Build and send HL7 v2 messages

Construct HL7 v2 messages from scratch using typed segment classes and send them over MLLP.

Start tutorial

FAQ

Frequently asked questions

Use the HL7v2 message parser to extract the typed structure. The parsed message gives you direct access to every segment and field by name.

from zato.hl7v2 import HL7Message

raw = 'MSH|^~\&|SENDER|FACILITY|RECEIVER|DEST|20260401120000||PEX^P07^PEX_P07|MSG00001|P|2.9\rEVN|P07|20260401120000\rPID|1||MRN-10045||JOHNSON^SARAH^M||19880612|F|||100 Oak Lane^^Portland^OR^97201\rPD1|||Family Health Clinic^^12345\rPRT|1||AT^Attending||1234^CHEN^DAVID^L^^^MD'
msg = HL7Message.parse(raw)

name = msg.pid.patient_name
dob = msg.pid.date_time_of_birth

Beyond the mandatory MSH header, the required segments are: EVN, PID, PV1, PES, PEO, PCR, RXE, TQ1. Optional segments provide additional detail when available.

Zato connects to any system that speaks HL7v2 over MLLP or FHIR over REST. This includes Epic, Cerner, Meditech, Allscripts, and other EHR platforms.

Yes, Zato has built-in MLLP support for sending and receiving HL7v2 messages. MLLP channels handle the framing protocol automatically.

Zato supports HL7 v2.9, which is backward compatible with earlier versions including v2.3, v2.5, and v2.7. Standard segments and datatypes are available as typed Python classes.

Yes. Zato handles both HL7v2 and FHIR natively, so you can parse v2 messages and build FHIR resources with IG-specific extensions in the same service. Typed Python classes are available for both protocols, including extensions from US Core, UK Core, Da Vinci, and other Implementation Guides.

Reference

PEX^P07 segment composition

Segments that make up the PEX^P07 message, in order. Groups are shown with their child segments.

#	Segment	Usage	Repeats	Description	Group
1	`MSH`	Required	No	Message header	-
2	`ARV`	Optional	Yes	Access restriction	-
3	`SFT`	Optional	Yes	Software segment	-
4	`UAC`	Optional	No	User authentication credential	-
5	`EVN`	Required	No	Event type	-
6	`PID`	Required	No	Patient identification	-
7	`PD1`	Optional	No	Patient additional demographic	-
8	`PRT`	Optional	Yes	Participation information	-
9	`ARV`	Optional	Yes	Access restriction	-
10	`NTE`	Optional	Yes	Notes and comments	-
11	`PV1`	Required	No	Patient visit	VISIT
12	`PV2`	Optional	No	Patient visit - additional info	VISIT
13	`PRT`	Optional	Yes	Participation information	VISIT
14	`PES`	Required	No	Product experience sender	EXPERIENCE
15	`PEO`	Required	No	Product experience observation	EXPERIENCE
16	`PCR`	Required	No	Possible causal relationship	PEX_CAUSE
17	`RXE`	Required	No	Pharmacy / treatment encoded order	PEX_CAUSE
18	`PRT`	Optional	Yes	Participation information	PEX_CAUSE
19	`TQ1`	Required	No	Timing / quantity	TIMING_QTY
20	`TQ2`	Optional	Yes	Timing / quantity relationship	TIMING_QTY
21	`RXR`	Optional	Yes	Pharmacy / treatment route	PEX_CAUSE
22	`RXA`	Required	No	Pharmacy / treatment administration	PEX_CAUSE
23	`RXR`	Optional	No	Pharmacy / treatment route	PEX_CAUSE
24	`PRT`	Optional	Yes	Participation information	PEX_CAUSE
25	`PRB`	Optional	Yes	Problem detail	PEX_CAUSE
26	`OBX`	Required	No	Observation result	PEX_CAUSE
27	`PRT`	Optional	Yes	Participation information	PEX_CAUSE
28	`NTE`	Optional	Yes	Notes and comments	PEX_CAUSE
29	`NK1`	Required	No	Next of kin / associated parties	PEX_CAUSE
30	`RXE`	Required	No	Pharmacy / treatment encoded order	ASSOCIATED_RX_ORDER
31	`PRT`	Optional	Yes	Participation information	ASSOCIATED_RX_ORDER
32	`TQ1`	Required	No	Timing / quantity	ASSOCIATED_RX_ORDER
33	`TQ2`	Optional	Yes	Timing / quantity relationship	ASSOCIATED_RX_ORDER
34	`RXR`	Optional	Yes	Pharmacy / treatment route	ASSOCIATED_RX_ORDER
35	`RXA`	Required	No	Pharmacy / treatment administration	ASSOCIATED_RX_ADMIN
36	`RXR`	Optional	No	Pharmacy / treatment route	ASSOCIATED_RX_ADMIN
37	`PRT`	Optional	Yes	Participation information	ASSOCIATED_RX_ADMIN
38	`PRB`	Optional	Yes	Problem detail	PEX_CAUSE
39	`OBX`	Required	No	Observation result	ASSOCIATED_OBSERVATION
40	`PRT`	Optional	Yes	Participation information	ASSOCIATED_OBSERVATION
41	`CSR`	Required	No	Clinical study registration	PEX_CAUSE
42	`CSP`	Optional	Yes	Clinical study phase	PEX_CAUSE

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