The MRCM Maintenance Tool supports browsing, creation, testing, review and publication of MRCM rules used in the SNOMED CT Authoring Platform and included in SNOMED CT releases for conformance checking.
Key uses include:
Browsing the MRCM rules The current release MRCM rule set can be browsed by anyone with a SNOMED International Confluence account. This feature supports and enhances the SNOMED CT Editorial Guide via links to interactive navigation of published rules.
Maintain MRCM rules (Version 1.1.0+) The SNOMED International Content Team will use the tool to review, create, modify, inactivate and promote MRCM rule changes.
Version and Publish MRCM rules (version 1.1.0+) The SNOMED International Content Team will version and publish MRCM rules in files that conform to the MRCM reference set specifications.
How do I... ?
EITHER Press MRCM in the Authoring Platform header menu.
OR Enter the MRCM Maintenance Tool address directly in your web browser (for example from a bookmark).
The MRCM Maintenance Tool opens in a new tab/window (depending on your web browser options), containing:
Branding and identity header
Context and actions bar
Domain panel
Attribute Range panel
Copyright notice, help and contact us footer
The header contains site branding and an MRCM version selector to its left (the default selection is the current authoring cycle content, ie the MRCM content for the next SNOMED CT release). To its right is the the authenticated account name, which when pressed expands the header downwards to reveal a Logout link (pressing the account name toggles the link visibility). Follow that link to log out and exit the application (this returns you to the IMS screen).
Below the header, the context and actions bar runs across the three main content panels. Currently selected items appear to the left of this bar (initially empty when nothing is selected), and a RESET button is available to its right (this clears any selections and initialises the content panels).
The Domain panel shows a nested tree-view listing of SNOMED CT domains. Navigate the tree-view listing to browse the domains.
By default the Applicable Attributes panel shows all available attributes. When an applicable attribute is selected, the Attribute Range panel shows that attribute's range details.
The footer contains a copyright notice, help link (which opens the MRCM Maintenance Tool section of this use guide), and a contact us link (identical to that in the Authoring Platform footer).
The domain names are active - pressing one will change the context of the Applicable Attributes panel to those matching the domain, and also expand the Domain Details sub-panel at the base of the Domain panel.
The Domain Details sub-panel can be toggled closed/open when a domain name is selected.
When open, press on the right of the sub-panel title bar to close the Domain Details sub-panel.
When closed, press in the sub-panel title bar to open it.
The listed domains can be filtered by typing match text into the Filter Domains... text box above the list.
Clear the Filter Domains... box by deleting the text or pressing the X button at the right of the text box, to remove the filtering and re-show all domains.
Alternatively, press RESET to the right of the context and actions bar (upper right corner above the three main content panels). This clears all three content panels back to their initial view state.


Find the desired applicable attribute name in the Applicable Attributes panel listing.
Press the name to change the context of the Attribute Range panel to those matching the attribute, and also show the Attribute Details sub-panel at the base of the Applicable Attributes panel. The selected attribute name is highlighted.
The Attribute Details sub-panel shows values for:
Grouped
Attribute Cardinality
The Attribute Details sub-panel can be toggled closed/open when an attribute is selected.
When open, press on the right of the sub-panel title bar to close the Attribute Details sub-panel.
When closed, press in the sub-panel title bar to open it.
Find the desired domain name in the Domain panel of the MRCM Maintenance Tool.
Press the name to change the context of the Applicable Attributes panel to those matching the domain, and also expand the Domain Details sub-panel at the base of the Domain panel. The selected domain name is highlighted.
The Domain Details sub-panel contains:
Domain Constraint
Parent Domain (sub-domains only)
Proximal Primitive Constraint
Guide URL
Precoordination Domain Template
Postcoordination Domain Template
The Applicable Attributes list can be filtered by typing a text pattern into the Filter Attributes... box. As soon as text is entered, the attributes list will update to only show those matching the filter text.
If a sub-domain is selected, the Applicable Attributes results will show all those applicable to its parent domain, however only those applicable to the selected sub-domain will be active in the list.
Any attributes not applicable to the selected sub-domain will be inactive, and moving the cursor onto them will show a symbol, indicating they cannot be viewed for the selected sub-domain.
Attribute in Group Cardinality
Rule Strength
Content Type
The Attribute Range panel shows the following details for the selected attribute:
Range Constraint
Attribute Rule
Mandatory
Content Type
On selecting an applicable attribute, a search is performed to retrieve all concepts matching the range constraints. After a brief pause (search time depends on the complexity of the search and number of results obtained) the results are presented in a sub-panel at the base of the Attribute Range panel.



MAIN which selects the MRCM content defined on the International Authoring Platform for the current authoring cycle, and so which will be in the next SNOMED CT release (by its nature this content is subject to change). The other options are previous published versions of SNOMED CT, each of which shows the version of MRCM included on their release.












