Field in a Complex and Extended Map from SNOMED CT Reference Sets that identifies the SNOMED CT concept in the metadata hierarchy which represents the MapCategory for the associated map member.

Note: The categories vary for different target code systems, each set of categories is represented by a subtype of 609331003 | Map category value| . For example in the case of ICD-10 the individual category values are subtypes of:

447634004 | ICD-10 Map category value| .