[{"data":1,"prerenderedAt":194},["ShallowReactive",2],{"content-query-SXTpTGJbI4":3},{"_path":4,"_dir":5,"_draft":6,"_partial":6,"_locale":7,"title":8,"description":7,"body":9,"_type":188,"_id":189,"_source":190,"_file":191,"_stem":192,"_extension":193},"\u002Fblogs\u002Ffhir-vs-hl7","blogs",false,"","Fhir Vs Hl7",{"type":10,"children":11,"toc":179},"root",[12],{"type":13,"tag":14,"props":15,"children":16},"element","case-study-section",{},[17,25,31,36,43,48,53,59,64,69,75,80,85,90,96,142,148,153,158,163,169,174],{"type":13,"tag":18,"props":19,"children":21},"h1",{"id":20},"fhir-vs-hl7-whats-the-difference",[22],{"type":23,"value":24},"text","FHIR vs HL7: What's the Difference?",{"type":13,"tag":26,"props":27,"children":28},"p",{},[29],{"type":23,"value":30},"Anyone working in healthcare software eventually hits an alphabet soup of standards, and two of the most common are HL7 and FHIR.",{"type":13,"tag":26,"props":32,"children":33},{},[34],{"type":23,"value":35},"People often use them as if they are competing options, but that framing is misleading. The relationship is more like family than rivalry. Understanding it will save you a lot of confusion when you are scoping an integration.",{"type":13,"tag":37,"props":38,"children":40},"h2",{"id":39},"hl7-is-the-organization-and-an-older-standard",[41],{"type":23,"value":42},"HL7 is the organization (and an older standard)",{"type":13,"tag":26,"props":44,"children":45},{},[46],{"type":23,"value":47},"HL7, or Health Level Seven International, is the standards body that develops healthcare interoperability standards. So in one sense, FHIR is an HL7 standard, because HL7 the organization created it.",{"type":13,"tag":26,"props":49,"children":50},{},[51],{"type":23,"value":52},"But when people say \"HL7\" in a technical conversation, they usually mean HL7 Version 2 (HL7 v2), the messaging standard that has quietly run hospital data exchange for decades.",{"type":13,"tag":37,"props":54,"children":56},{"id":55},"the-format-behind-hl7",[57],{"type":23,"value":58},"The format behind HL7",{"type":13,"tag":26,"props":60,"children":61},{},[62],{"type":23,"value":63},"HL7 v2 uses pipe-and-hat delimited messages, where segments are separated by pipes and other special characters. The format looks cryptic to modern eyes, but it works, and it is everywhere. If a lab result moves between systems in an American hospital today, there is a very good chance it is riding on HL7 v2.",{"type":13,"tag":26,"props":65,"children":66},{},[67],{"type":23,"value":68},"There is also HL7 Version 3, whose document standard CDA (Clinical Document Architecture) uses XML and aims for more rigor but has seen far less adoption than v2.",{"type":13,"tag":37,"props":70,"children":72},{"id":71},"fhir-is-the-modern-standard",[73],{"type":23,"value":74},"FHIR is the modern standard",{"type":13,"tag":26,"props":76,"children":77},{},[78],{"type":23,"value":79},"FHIR (Fast Healthcare Interoperability Resources) is HL7's modern answer to the limitations of the older standards.",{"type":13,"tag":26,"props":81,"children":82},{},[83],{"type":23,"value":84},"Instead of cryptic delimited messages, FHIR models healthcare data as discrete \"resources\" with a consistent structure, exchanged over standard RESTful web APIs using JSON or XML.",{"type":13,"tag":26,"props":86,"children":87},{},[88],{"type":23,"value":89},"If you have built anything with a modern web API, FHIR will feel immediately familiar in a way HL7 v2 never will.",{"type":13,"tag":37,"props":91,"children":93},{"id":92},"the-practical-differences",[94],{"type":23,"value":95},"The practical differences",{"type":13,"tag":97,"props":98,"children":99},"ul",{},[100,112,122,132],{"type":13,"tag":101,"props":102,"children":103},"li",{},[104,110],{"type":13,"tag":105,"props":106,"children":107},"strong",{},[108],{"type":23,"value":109},"Format.",{"type":23,"value":111}," HL7 v2 uses delimited text messages. FHIR uses modern web data formats (JSON or XML) over REST APIs.",{"type":13,"tag":101,"props":113,"children":114},{},[115,120],{"type":13,"tag":105,"props":116,"children":117},{},[118],{"type":23,"value":119},"Developer experience.",{"type":23,"value":121}," HL7 v2 has a steep, idiosyncratic learning curve. FHIR is approachable for any developer comfortable with web APIs.",{"type":13,"tag":101,"props":123,"children":124},{},[125,130],{"type":13,"tag":105,"props":126,"children":127},{},[128],{"type":23,"value":129},"Use case.",{"type":23,"value":131}," HL7 v2 excels at the high-volume, event-driven message passing that keeps hospital systems in sync (admissions, lab orders, results). FHIR excels at granular, on-demand data access, which is exactly what apps and modern integrations need.",{"type":13,"tag":101,"props":133,"children":134},{},[135,140],{"type":13,"tag":105,"props":136,"children":137},{},[138],{"type":23,"value":139},"Maturity vs momentum.",{"type":23,"value":141}," HL7 v2 has decades of entrenched, battle-tested deployment. FHIR has the momentum, regulatory backing, and developer mindshare.",{"type":13,"tag":37,"props":143,"children":145},{"id":144},"so-which-one-do-you-use",[146],{"type":23,"value":147},"So which one do you use?",{"type":13,"tag":26,"props":149,"children":150},{},[151],{"type":23,"value":152},"For most new application development, FHIR is the answer, and increasingly it is also the answer regulators expect. But here is the part nobody tells you: you do not always get to choose.",{"type":13,"tag":26,"props":154,"children":155},{},[156],{"type":23,"value":157},"The systems you are integrating with were often built on HL7 v2, and they are not going anywhere soon. In practice, many real-world healthcare integrations involve both, sometimes with an integration engine translating between the two.",{"type":13,"tag":26,"props":159,"children":160},{},[161],{"type":23,"value":162},"A team that understands both standards, rather than treating one as obsolete, is the team that ships working integrations.",{"type":13,"tag":37,"props":164,"children":166},{"id":165},"the-bottom-line",[167],{"type":23,"value":168},"The bottom line",{"type":13,"tag":26,"props":170,"children":171},{},[172],{"type":23,"value":173},"HL7 v2 is the workhorse standard that already runs much of healthcare data exchange. FHIR is the modern, web-friendly standard that is rapidly becoming the default for new development and is backed by regulation.",{"type":13,"tag":26,"props":175,"children":176},{},[177],{"type":23,"value":178},"They are not really competitors. They are different tools, often used together, and the most useful thing you can do is understand where each one fits.",{"title":7,"searchDepth":180,"depth":180,"links":181},2,[182,183,184,185,186,187],{"id":39,"depth":180,"text":42},{"id":55,"depth":180,"text":58},{"id":71,"depth":180,"text":74},{"id":92,"depth":180,"text":95},{"id":144,"depth":180,"text":147},{"id":165,"depth":180,"text":168},"markdown","content:blogs:fhir-vs-hl7.md","content","blogs\u002Ffhir-vs-hl7.md","blogs\u002Ffhir-vs-hl7","md",1784215266063]