IG+Messaging+Structure+Variance+Analysis


 * Click here for the Position and Strategy for Message Structure on the LRI Strategy and Consensus Page **


 * Problem Statement :**

What are the differences in constraints between message structures for both HL7 implementation guides?

Review Summary:
 * Bob, Jonathan and Erik to start, SWG to continue:
 * Austin - HITSP - **additional criteria on message structure?**
 * Ken/Glen - ELINCS - **additional criteria on message structure?**

 Click on the link to the left to access the Messaging Structure spreadsheet for live editing.

media type="custom" key="9833023"

RE - Required, but can be empty O - Optional C - Conditional CE - Conditional, but can be empty X - Not in the profile || R - Required RE - Required, but can be empty O - Optional C - Conditional CE - Conditional, but can be empty X - Not in the profile
 * Additional summary data that was used to put together the messaging structure analysis is available in the table below. This relies on work performed by Walter Sujansky in looking at both HL7 Implementation Guides.**
 * **Messaging Comparison** || **Interoperable Laboratory Result Reporting To EHR (US Realm) R1** || **Ambulatory Care Lab Result (ELINCS) R1** ||
 * //**General Analysis**// ||  ||   ||
 * Usage || R - Required
 * - specific to message type ||
 * Cardinality || All levels of cardinality supported || All levels of cardinality supported ||
 * All Objects (required) || 2180 || 189 ||
 * All Objects (optional) || 1429 || 227 ||
 * Segments (required) || 13 || 9 ||
 * Segments (optional) || 7 || 0 ||
 * Components (required) || 997 || 90 ||
 * Components (optional) || 850 || 143 ||
 * Fields (required) || 95 || 48 ||
 * Fields (optional) || 243 || 25 ||
 * Subcomponents (required) || 1075 || 42 ||
 * Subcomponents (optional) || 329 || 59 ||
 * Data Element Differences ||  || In certain cases, the maximum element length in Ambulatory Care Lab Result segments is greater than indicated in the HL7 standard.Specifically, this is the case for the following elements:

MSH-10 50 ORC-4 50 OBR-2 50 OBR-3 50 MSA-2 50 || SFT PID PD1 NTE NK1 PV1 PV2 ORC OBR NTE TQ1 TQ2 CTD OBX NTE FTI CTI SPM OBX DSC || MSH PID ORC OBR NTE TQ1 SPM || PID ORC OBR NTE TQ1 OBX NTE SPM || SFT (O, 0..*) MSA (R, 1..1) ERR (C, 0..*) || MSH (R,1..1) SFT (X, 0..0) MSA (R, 1..1) ERR (RE, 0..1*) ||
 * //**Specific Profile Structure Analysis**// ||  ||   ||
 * Result Status Profile (ORU-1) || MSH
 * Result Available Profile (ORU-2) || n/a || MSH
 * Confirm Message Response Profile (ACK-1) || MSH (R,1..1)