In a prior version of this Context Group, Cranio-Caudal Exaggerated Laterally was assigned the code Y-X1770, and Cranio-Caudal Exaggerated Medially was assigned the code Y-X1771. Those codes are deprecated, as they are not valid SNOMED codes. Although there is minimal possibility of misinterpretation with SOP Instances that may include the deprecated codes, receiving applications should be aware of this change; see Annex J.

While SRT is the preferred Coding Scheme Designator for SNOMED, regulatory approval of mammography systems makes changes to such systems problematic. Implementers should be aware that many systems will continue to use the deprecated designator SNM3 for certain terms in this context group. It is recommended that implementations receiving Mammography Image or CAD SOP Instances support both SNM3 and SRT as equivalent Coding Scheme Designators for Attributes or Content Items that use this Context Group.

In a prior version of this Context Group, (R-102CF, SRT, "cranio-caudal exaggerated") was included. This is not a clinically applied view. Use of this term is deprecated, but receiving applications should be aware of its prior existence.