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The document specifies HL7 acknowledgement and delimiter rules, describes background jobs and direct-connect and VistA references, and enumerates key trigger events with their associated message types. It also details the structure of HL7 message segments, including header, acknowledgement, patient identification and visit segments, query/response controls, and error handling, supporting consistent system interoperability across versions and revision history updates.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/master-patient-index-mpi-hl7-interface-specifications-version-10/171866/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/master-patient-index-mpi-hl7-interface-specifications-version-10/171866.png","ImageObject",442,249,{"name":88,"@type":89},"Mia  ","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/vnd.openxmlformats-officedocument.wordprocessingml.document","2026-10-21","2026-09-01",true,{"@type":98,"interactionType":99,"userInteractionCount":35},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"What are the HL7 acknowledgement and delimiter requirements for MPI interfaces?","Question",{"text":108,"@type":109},"The specifications describe HL7 commit acknowledgement and application-level acknowledgement requirements, and define how delimiters are included in field values for consistent message parsing.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"Which kinds of HL7 trigger events are covered in this MPI documentation?",{"text":113,"@type":109},"The document covers key ADT/ACK events (add, admit/visit, discharge/end visit, link/unlink, register, update, move, merge), as well as query-related events such as QBP/RSP, patient query, and VQQ query matching.",{"name":115,"@type":106,"acceptedAnswer":116},"What HL7 message segments does the specification define?",{"text":117,"@type":109},"It defines many standard and MPI-relevant HL7 segments, including batching header/trailer (BHS, BTS), error and event type (ERR, EVN), message header/acknowledgement (MSH, MSA), and patient/visit identification segments (PID, PD1, PV1, PV2).","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},171866,1791522063,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":35,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":141},687207024478,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","Master Patient Index (MPI)\nVersion 1.0\nHL7 Interface Specifications\nApril 1999\nRevised March 2019\nDepartment of Veterans Affairs\nOffice of Information and Technology (OIT)\nRevision History\nTable i. Documentation revision history\nPatch Revisions\n\u0013XE \"Revision History:Patches\"\u0015\u0013XE \"Patch Revisions\"\u0015\nFor a complete list of patches related to this software, please refer to the Patch Module on FORUM.\n\u000fContents\u0013XE \"Contents\"\u0015\u0013 TOC \\o \"1-2\" \\h \\z \\t \"Heading F/B,9\" \u0014\n\u0013 HYPERLINK \\l \"_Toc3900895\" \u00141.\tIntroduction\t\u0013 PAGEREF _Toc3900895 \\h \u00141-1\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900896\" \u00141.1.\tHL7 Commit Acknowledgement and Application Level Acknowledgements Requirements\t\u0013 PAGEREF _Toc3900896 \\h \u00141-2\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900897\" \u00141.2.\tHL7 Delimiter(s) Included Data in Field Value\t\u0013 PAGEREF _Toc3900897 \\h \u00141-2\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900898\" \u00141.3.\tBackground Jobs\t\u0013 PAGEREF _Toc3900898 \\h \u00141-3\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900899\" \u00141.4.\tDirect Connect\t\u0013 PAGEREF _Toc3900899 \\h \u00141-4\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900900\" \u00141.5.\tVistA References\t\u0013 PAGEREF _Toc3900900 \\h \u00141-4\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900901\" \u00142.\tTrigger Events & Message Definitions\t\u0013 PAGEREF _Toc3900901 \\h \u00142-1\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900902\" \u00142.1.\tADT/ACK: Add Person or Patient Information (Event A28)\t\u0013 PAGEREF _Toc3900902 \\h \u00142-3\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900903\" \u00142.2.\tADT/ACK: Admit/Visit Notification (Event A01)\t\u0013 PAGEREF _Toc3900903 \\h \u00142-6\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900904\" \u00142.3.\tADT/ACK: Discharge/End Visit (Event A03)\t\u0013 PAGEREF _Toc3900904 \\h \u00142-8\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900905\" \u00142.4.\tADT/ACK: Link Patient Information (Event A24)\t\u0013 PAGEREF _Toc3900905 \\h \u00142-10\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900906\" \u00142.5.\tQBP/RSP:  Find Candidates (QBP) and Response (RSP) (events Q22 and K22)\t\u0013 PAGEREF _Toc3900906 \\h \u00142-17\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900907\" \u00142.6.\tADT/ACK: Merge Patient Identifier List (Event A40)\t\u0013 PAGEREF _Toc3900907 \\h \u00142-23\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900908\" \u00142.7.\tADT/ACK: Move Patient Information Patient Identifier List (Event A43)\t\u0013 PAGEREF _Toc3900908 \\h \u00142-26\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900909\" \u00142.8.\tADT/ACK: Register a Patient (Event A04)\t\u0013 PAGEREF _Toc3900909 \\h \u00142-29\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900910\" \u00142.9.\tADT/ACK: Update Patient Information (Event A08)\t\u0013 PAGEREF _Toc3900910 \\h \u00142-32\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900911\" \u00142.10.\tADT/ACK: Update Person Information (Event A31)\t\u0013 PAGEREF _Toc3900911 \\h \u00142-35\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900912\" \u00142.11.\tADT/ACK: Update CMOR (Event A31)\t\u0013 PAGEREF _Toc3900912 \\h \u00142-40\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900913\" \u00142.12.\tADT/ACK: Enterprise Update Person Information (Event A31)\t\u0013 PAGEREF _Toc3900913 \\h \u00142-43\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900914\" \u00142.13.\tMFN: Update Treating Facility (Event M05)\t\u0013 PAGEREF _Toc3900914 \\h \u00142-47\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900915\" \u00142.14.\tQRY/ADR: Patient Query (Event A19)\t\u0013 PAGEREF _Toc3900915 \\h \u00142-52\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900916\" \u00142.15.\tVQQ: Query for Patient Matches (Event Q02)\t\u0013 PAGEREF _Toc3900916 \\h \u00142-56\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900917\" \u00142.16.\tVQQ-Q02: Batch Format (i.e., the Local/Missing ICN Resolution Job)\t\u0013 PAGEREF _Toc3900917 \\h \u00142-58\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900918\" \u00142.17.\tADT/ACK: Unlink Patient Information (Event A37)\t\u0013 PAGEREF _Toc3900918 \\h \u00142-60\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900919\" \u00143.\tMessage Segments\t\u0013 PAGEREF _Toc3900919 \\h \u00143-1\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900920\" \u00143.1.\tBHS: Batch Header Segment\t\u0013 PAGEREF _Toc3900920 \\h \u00143-2\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900921\" \u00143.2.\tBTS: Batch Trailer Segment\t\u0013 PAGEREF _Toc3900921 \\h \u00143-7\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900922\" \u00143.3.\tDSC: Continuation Pointer Segment\t\u0013 PAGEREF _Toc3900922 \\h \u00143-8\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900923\" \u00143.4.\tERR: Error Segment\t\u0013 PAGEREF _Toc3900923 \\h \u00143-9\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900924\" \u00143.5.\tEVN: Event Type Segment\t\u0013 PAGEREF _Toc3900924 \\h \u00143-10\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900925\" \u00143.6.\tMFA: Master File Acknowledgement Segment\t\u0013 PAGEREF _Toc3900925 \\h \u00143-14\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900926\" \u00143.7.\tMFE: Master File Entry Segment\t\u0013 PAGEREF _Toc3900926 \\h \u00143-17\u0015\u0015\n\u0013 HYPERLINK \\l \"_Toc3900927\" \u00143.8.\tMFI: Master File Identification Segment\t\u0013 PAGEREF _To","cbCaihjoKgjVcym9","https://ap.wps.com/l/cbCaihjoKgjVcym9","docx",688037,287,"English","# Introduction\n## HL7 Commit Acknowledgement and Application Level Acknowledgements Requirements\n## HL7 Delimiter(s) Included Data in Field Value\n## Background Jobs\n## Direct Connect\n## VistA References\n# Trigger Events & Message Definitions\n## ADT/ACK message events (A28, A01, A03, A24, A04, A08, A31)\n## QBP/RSP, QRY/ADR, VQQ query events\n## Merge/Move/Unlink patient identifier events\n# Message Segments\n## Batch Header and Trailer segments (BHS, BTS)\n## Error/Event/acknowledgement segments (ERR, EVN, MSA)\n## Patient and visit segments (PID, PD1, PV1, PV2)","[{\"question\":\"What are the HL7 acknowledgement and delimiter requirements for MPI interfaces?\",\"answer\":\"The specifications describe HL7 commit acknowledgement and application-level acknowledgement requirements, and define how delimiters are included in field values for consistent message parsing.\"},{\"question\":\"Which kinds of HL7 trigger events are covered in this MPI documentation?\",\"answer\":\"The document covers key ADT/ACK events (add, admit/visit, discharge/end visit, link/unlink, register, update, move, merge), as well as query-related events such as QBP/RSP, patient query, and VQQ query matching.\"},{\"question\":\"What HL7 message segments does the specification define?\",\"answer\":\"It defines many standard and MPI-relevant HL7 segments, including batching header/trailer (BHS, BTS), error and event type (ERR, EVN), message header/acknowledgement (MSH, MSA), and patient/visit identification segments (PID, PD1, PV1, PV2).\"}]","Master Patient Index (MPI) - HL7 Interface Specifications - Version 1.0 | DOCX",1788287424,100]