Allow SNOMED mapping based on available CPT Crosswalk

When setting up radiology items, it would be helpful if the system presented SNOMED code options based on the CPT code entered in the item rather than having to guess at a code, not knowing if it is actually correct. The AMA SNOMED to CPT crosswalk exists for this purpose. Given current development of functionality using SNOMED codes in the software, it is imperative that the correct codes are mapped. It only makes sense that the software helps in this process.