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You're looking at domain 'healthcareonlinetools.com' on the commercial generic top-level domain (.com) without a subdomain. The second-level label 'healthcareonlinetools' is 21 characters long with 9 vowels and twelve consonants. It segments into three words: healthcare, online, tools. The median word length lands at 6 characters. No strong language cues emerged from the frequency lists.

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HL7 Segment Browser - Healthcare Online Tools

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Browse all common HL7 v2.x segments with field definitions and message type schemas. Free reference for healthcare integration analysts.

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hl7 segment browser, hl7 segment definitions, hl7 v2 segments, hl7 field reference, hl7 message types, hl7 integration reference, hl7 schema browser

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https://healthcareonlinetools.com/en/hl7-tools/hl7-segment-browser/

HL7 Segment Browser — HL7 v2.x Field Reference

Browse HL7 v2.x segments, fields, data types, and message schemas. Free reference tool for healthcare integration analysts.

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Healthcare Online Tools - Free medical data utilities

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HL7 Segment Browser — Free v2.x Reference

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Explore HL7 v2.x segment definitions, field details, and message type schemas. No upload required.

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HEALTHCAREONLINETOOLS.COM

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HL7 Segment Browser

Dr. Marta Ruiz-Castellano, MD MSc

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HL7 Tools

How to Use HL7 Segment Browser

On the Segments tab, browse all available HL7 v2.x segment definitions sorted alphabetically.

Click the expand button on any segment row to reveal its full field list — position, name, data type, max length, required, and repeating flags.

Use the search box to filter segments by code or description, or use the Data Type filter to show only segments containing a specific HL7 data type.

On the Message Types tab, browse the 10 most common HL7 v2.x message structures and click any message type to see its required and optional segments in sequence.

Click any segment code in the Message Types tab to jump directly to that segment's full field definition in the Segments tab, with automatic highlighting.

The segment definitions are based on HL7 v2.5 and v2.7, which cover the vast majority of production HL7 interfaces in use today. Minor version differences may have slightly different field lists or cardinality rules, but the core segment structure is consistent across HL7 v2.3 through v2.8.

Does this tool support all HL7 v2.x versions?

No. This browser is a pure reference tool containing only public HL7 standard segment definitions. No HL7 message files are uploaded, no patient data is processed, and no PHI is involved. To parse actual HL7 messages, use the HL7 Viewer tool.

Does this tool parse or process actual HL7 messages?

The browser includes 21 common HL7 v2.x segments covering all segments used in the 10 message type schemas: MSH, PID, PV1, OBX, OBR, NK1, EVN, ORC, NTE, MSA, AL1, DG1, IN1, GT1, PV2, SCH, TXA, FT1, AIG, AIL, and AIP.

How many segments does this browser cover?

ADT^A01 (Admit), ADT^A04 (Register Outpatient), ADT^A08 (Update Patient), ADT^A31 (Update Person), ORM^O01 (Order), ORU^R01 (Observation Result), SIU^S12 (New Appointment), MDM^T02 (Document Status Change), BAR^P01 (Add Patient Account), and DFT^P03 (Post Financial Transaction).

What are the 10 message types included?

At the segment level, Required means the segment must appear in messages of that type — its absence makes the message non-conformant. At the field level, Required means the field value must be populated when the segment is sent. Fields marked Repeating can appear multiple times within a single segment, separated by the tilde (~) delimiter.

What does 'Required' mean for a field vs. a segment?

The most common data types are CX (Extended Composite ID) for identifiers like MRNs, XPN (Extended Person Name) for patient and provider names, TS (Timestamp) for dates and times, CE/CWE (Coded Element) for clinical codes like ICD and LOINC, and ST (String) for free-text content.

What HL7 data types appear most often?

You can use it as a reference to manually check field mappings and segment composition. For automated validation against schemas, use the HL7 Viewer which includes segment parsing and required-field checking against actual message content.

Can I use this to validate my HL7 interface?

A segment is a named group of related data elements (e.g., PID for patient demographics). A field is an individual data item within that segment, identified by its position number — for example, PID.5 is the Patient Name field within the Patient Identification segment.

What is the difference between a segment and a field in HL7?

No. This browser contains only standard HL7 segment definitions. Z-segments are custom extensions defined by individual healthcare organizations or vendors and are not part of the public standard. Check your specific vendor's documentation for local Z-segment definitions.

Are Z-segments (custom segments) included?

Yes. Use the Export CSV button on the Segments tab to download the currently visible segment list with descriptions and field counts. You can filter first by data type or search query to export only the segments relevant to your project.

Can I export the segment definitions?

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✅ Low Risk - https://healthcareonlinetools.com/en/hl7-tools/hl7-segment-browser/

Requests	IP Address	Location	AS Autonomous System
3	142.251.127.97	United States	AS15169Google LLC
3	188.114.97.3	United States	AS13335Cloudflare, Inc.
6	2	-	-

Security Scan Report: healthcareonlinetools.com

Summary

AI Security Verdict

Low Risk

Risk Factors

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Details

Screenshot

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Language Analysis

Primary Language

Detection Details

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Primary Category

All Detected Categories

Detected Features

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Detected Technologies8

Content Similarity HashesFor malware variant detection

TLSH (Trend Micro Locality Sensitive Hash)

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