HL7 Conformance Statement

Article sections

    ACN: EN00031Author: Shaikat Last Update: February 27, 2026

    Applies to:Checkmark IconV 2.11.0

    Introduction

    This document specifies the electronic data exchange for EnvisionNEXT products from Miracle Advance Technologies using the HL7 v2.3 standard.

    Important Note: Specifications declared in this document are subject to change without notice. For notifications, please contact us in advance for the latest updates.

    Terms, Descriptions, and Abbreviations

    The terms, descriptions, and abbreviations used in this document are given below with their formal names.

    • PACS: Picture Archiving and Communication System
    • HL7: Health Level Seven
    • TCP/IP: Transmission Control Protocol / Internet Protocol
    • MLLP: Minimal Lower Layer Protocol

    Supported Message List

    Message Definition Message Type Event Code Remark
    Acknowledgment message ACK –  
    Update patient information ADT A08  
    Merge patient information ADT A18  
    Order message ORM 001  
    Bi-directional ORM 001 Synapse Standard
    Unsolicited transmission of an observation message ORU R01  

    Transportation Profile

    MLLP

    As it is recommended in HL7 v.2.3, Minimal Lower Layer Protocol (MLLP) is supported for Envision.Net as a transportation protocol. MLLP is a protocol that is based on TCP/IP with OSI7 layering. Due to their recommendations to provide background among layers, HL7 messages.

    • Starts with 0x0B.
    • Ends with 0x1C and 0x0D.
    • Each segment ends with 0x0D

    HL7 Messages

    Introduction

    Up to HL7 v3.0, all previous versions were formed of segments. Each message has been described withmessage formulas while it has been formalized

    • The segments written without any prefix are mandatory
    • The segments stated in [ ] are optional
    • { } represents segment blocks

    HL7 Message Grammars

    The message grammars of the HL7 messages supported in Envision.Net PACS & RIS are below;

    ACK: Acknowledgment message

    Segment Description
    MSH Message Header
    MSA Message Acknowledgment

    ADT^A08 : Update patient information

    Segment Description
    MSH Message Header
    PID Patient Identification
    [PV1] Patient Visit

    ADT^A18: Merge patient information

    Segment Description
    MSH Message Header
    PID Patient Identification
    MRG Merge Information

    ORM^O01: Order message

    Segment Description
    MSH Message Header
    PID Patient Identification
    [PV1] Patient Visit
    ORC Common Order
    OBR Observation Request

    ORM^O01 : Bi-directional

    Segment Description
    MSH Message Header
    PID Patient Identification
    [PV1] Patient Visit
    ORC Common Order
    OBR Observation Request
    ZDS Additional Identification Information

    ORU^R01: Unsolicited transmission of an observation message

    Segment Description
    MSH Message Header
    PID Patient Identification
    [PV1] Patient Visit
    ORC Common Order
    OBR Observation Request
    OBX Observation/Results

    HL7 Message Segments

    Notes on table structure

    The segments used in Envision.Net PACS & RIS HL7 messaging are listed below in the form fora m of a table. If we describe the columns in order

    • SEQ: Sequence of field
    • NAME: Name of field
    • TYPE: Data type of HL7 standard
    • LEN: Maximum number of characters
    • REMARK: …

    USE:

    • O = Optional
    • R = Required
    • U = Unused

    Segments

    MSH|^~\&|||||||ORM^O01|20130101_1|P|2.3
    SEQ NAME TYPE LEN USE REMARK
    1 FIELD SEPARATOR ST 1 R Fix – |
    2 ENCODING CHARACTERS ST 4 R Fix – ^~&
    3 SENDING APPLICATION HD 180 U  
    4 SENDING FACILITY HD 180 U  
    5 RECEIVING APPLICATION HD 180 U  
    6 RECEIVING FACILITY HD 180 U  
    7 DATE/TIME OF MESSAGE TS 26 U  
    8 SECURITY ST 40 U  
    9 MESSAGE TYPE CM 7 R  
    10 MESSAGE CONTROL ID ST 20 O Unique ID that uniquely identifies the message
    11 PROCESSING ID PT 3 R Fix – P
    12 VERSION ID ID 8 R Fix – 2.3 
    PID|||1|PATIENT_ID_EXT|12345678^Patient^Name^^^Mrs.||19900101|F|Patient^Name^Local^^^Ms.||Country||||||||123456789
    SEQ NAME TYPE LEN USE REMARK
    1 SET ID – PATIENT ID SI 4 U  
    2 PATIENT ID (EXTERNAL ID) CK 16 U  
    3 PATIENT ID (INTERNAL ID) CK 20 R HN
    4 ALTERNATE PATIENT ID ST 12 O  
    5 PATIENT NAME PN 48 O  
    6 MOTHER’S MAIDEN NAME ST 30 U  
    7 DATE OF BIRTH TS 26 O Format: YYYYMMDD
    8 SEX IS 1 O F = Female, M = Male, O = Other, U = Unknown
    9 PATIENT ALIAS XPN 48 R  
    10 RACE IS 1 U  
    11 PATIENT ADDRESS XAD 106 O  
    12 COUNTY CODE IS 4 U  
    13 PHONE NUMBER – HOME XTN 40 O  
    14 PHONE NUMBER – BUSINESS XTN 40 O  
    15 LANGUAGE – PATIENT CE 25 U  
    16 MARITAL STATUS IS 1 O A = Separated, D = Divorced, M = Married, S = Single, W = Widowed
    17 RELIGION IS 3 U  
    18 PATIENT ACCOUNT NUMBER CX 20 U  
    19 SSN NUMBER – PATIENT ST 16 R Patient social security number 
    PV1|||||||||RAD001^Dr.^Attending Physician~RAD001^นพ.^แพทย์ผู้ทำการรักษา||OPD001^ห้องตรวจ 1||||||||12345 
    SEQ NAME TYPE LEN USE REMARK
    1 SET ID – PATIENT VISIT SI 4 U  
    2 PATIENT CLASS IS 1 O I=IPD, O=OPD, U=Unknown
    3 ASSIGNED PATIENT LOCATION PL 12 U  
    4 ADMISSION TYPE IS 2 U  
    5 PREADMIT NUMBER CX 20 O AN
    6 PRIOR PATIENT LOCATION PL 12 U  
    7 ATTENDING DOCTOR XCN 60 U  
    8 REFERRING DOCTOR XCN 60 U  
    9 CONSULTING DOCTOR XCN 60 O Assign Doctor. Example: RAD001^Dr.^Attending Physician~RAD001^นพ.^แพทย์ผู้ทำการรักษา
    10 HOSPITAL SERVICE IS 3 U  
    11 TEMPORARY LOCATION PL 12 O Reference Unit. Example: OPD001^ห้องตรวจ 1
    12 PREADMIT TEST INDICATOR IS 2 U  
    13 READMISSION INDICATOR IS 2 U  
    14 ADMIT SOURCE IS 3 U  
    15 AMBULATORY STATUS IS 2 U  
    16 VIP INDICATOR IS 2 U  
    17 ADMITTING DOCTOR XCN 60 U  
    18 PATIENT TYPE IS 2 U  
    19 VISIT NUMBER CX 15 O  

    ORC|NW|20130101CR

    SEQ NAME TYPE LEN USE REMARK
    1 ORDER CONTROL ID ID 2 R NW=New order, CA=Cancel order, XO=Change order, SC=Status changed
    2 PLACER ORDER NUMBER EI 75 R Request No.; Can use same accession number 
    OBR||20130101CR001||EXAM001^CHEST PA|||||||||Checkup<br>Yearly 2556|||DOC001^Dr.^Referring Doctor~DOC001^นพ.^แพทย์สง่ ตรวจ||||||||CR|||^^^^^R
    SEQ NAME TYPE LEN USE REMARK
    1 SET ID – OBSERVATION REQ SI 4 U  
    2 PLACER ORDER NUMBER EI 75 R Accession Number
    3 FILLER ORDER NUMBER EI 75 U  
    4 UNIVERSAL SERVICE ID CE 200 R Example: EXAM001^CHEST PA
    5 PRIORITY ID 2 U  
    6 REQUESTED DATE/TIME TS 26 U  
    7 OBSERVATION DATE/TIME TS 26 U  
    8 OBSERVATION END DATE/TIME TS 26 U  
    9 COLLECTION VOLUME CQ 20 U  
    10 COLLECTOR IDENTIFIER XCN 60 U  
    11 SPECIMEN ACTION CODE ID 1 U  
    12 DANGER CODE CE 60 U  
    13 RELEVANT CLINICAL INFO. ST 300 O Use for new line
    14 SPECIMEN RECEIVED DT/TM TS 26 U  
    15 SPECIMEN SOURCE CM 300 U  
    16 ORDERING PROVIDER XCN 80 O Referring Doctor; Example: DOC001^Dr.^Referring Doctor~DOC001^นพ.^แพทย์สง่ ตรวจ
    17 ORDER CALLBACK PH. NO. XTN 40 U  
    18 PLACER FIELD 1 ST 60 U  
    19 PLACER FIELD 2 ST 60 U  
    20 FILLER FIELD 1 ST 60 U  
    21 FILLER FIELD 2 ST 60 U  
    22 RESULT RPT/STATUS CHNG DT TS 26 U  
    23 CHARGE TO PRACTICE CM 40 U  
    24 DIAGNOSTIC SERV SECT ID ID 10 O  
    25 RESULT STATUS ID 1 O  
    26 PARENT RESULT CM 200 U  
    27 QUANTITY/TIMING TQ 200 O   
    OBX|1|TX|||Text Result<br>Attending Physician M.D.||||||F|||201302271336||RAD001^Dr.^Attending Physician
    SEQ NAME TYPE LEN USE REMARK
    1 SET ID – OBSERVATIONAL SIMPLE SI 10 O Fix – 1
    2 VALUE TYPE ID 2 O Fix – TX
    3 OBSERVATION IDENTIFIER CE 590 U  
    4 OBSERVATION SUB-ID ST 20 U  
    5 OBSERVATION VALUE * * R Result Text; Text/Rtf/Html supported
    6 UNITS CE 60 U  
    7 REFERENCE RANGE ST 10 U  
    8 ABNORMAL FLAGS ID 5 U  
    9 PROBABILITY NM 5 U  
    10 NATURE OF ABNORMAL TEST ID 2 U  
    11 OBSERV RESULT STATUS ID 1 R Fix – F
    12 DATE LAST OBS NORMAL VALUES TS 26 U  
    13 USER DEFINED ACCESS CHECKS ST 20 U  
    14 DATE/TIME OF THE OBSERVATION TS 26 R Format – YYYYMMDDHHMMSS
    15 PRODUCER’S ID CE 60 U  
    16 RESPONSIBLE OBSERVER XCN 80 R Radiologist; Example: RAD001^Dr.^Attending Physician

    Example

    ACK

    • If the message is processed successfully
    MSH|^~\&|||||||ACK|20130101_1|P|2.3
    MSA|AA|20130101_1|Message Accept
    • If it rejects the message for any reason
    MSH|^~\&|||||||ACK|20130101_1|P|2.3
    MSA|AR|20130101_1|Message Reject
    • If an error occurs during processing
    MSH|^~\&|||||||ACK|20130101_1|P|2.3
    MSA|AE|20130101_1|Message Error

    ADT^A08

    MSH|^~\&|||||||ADT^A08|20130101_1|P|2.3

    MSH|^~\&|||||||ADT^A08|20130101_1|P|2.3

    PID|||1|0000001|Patient^Name^^^Mrs.||19901231|F|อดทน^ชื่อ^^^นาง||ประเทศไทย||||||||1234567890123PV1|||||||||RAD001^Dr.^Attending Physician~RAD001^นพ.^แพทย์ตรวจ||OPD001^ห้องตรวจ 1||||||||12345

    ORM^O01

    MSH|^~\&|||||||ORM^O01|20130101_1|P|2.3
PID|||1|0000001|Patient^Name^^^Mrs.||19901231|F|อดทน^ชื่อ^^^นาง||ประเทศไทย||||||||1234567
890123
PV1|||||||||RAD001^Dr.^Attending Physician~RAD001^นพ.^แพทย์ตรวจ||OPD001^ห้องตรวจ 1||||||||12345
ORC|NW|20130101CR
OBR||20130101CR001||EXAM001^CHEST PA|||||||||Checkup<br>Yearly 2556|||DOC001^Dr.^Referring Doctor Name~DOC001^นพ.^แพทย์สง่ ตรวจ||||||||CR|||^^^^^R

    ORU^R01

    MSH|^~\&|||||||ORU^R01|20130101_1|P|2.3
PID|||1|0000001|Patient^Name^^^Mrs.||19901231|F|อดทน^ชื่อ^^^นาง||ประเทศไทย||||||||1234567
890123
PV1|||||||||RAD001^Dr.^Attending Physician~RAD001^นพ.^แพทย์ตรวจ||OPD001^ห้องตรวจ 1||||||||12345
ORC|NW|20130101CR
OBR||20130101CR001||EXAM001^CHEST PA|||||||||Checkup<br>Yearly 2556|||DOC001^Dr.^Referring Doctor Name~DOC001^นพ.^แพทย์สง่ ตรวจ||||||||CR|||^^^^^R
OBX|1|TX|||Text Result<br>Attending Physician M.D.||||||F|||201302271336||RAD001^Dr.^Attending Physician
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