This comment deserves serious consideration because of the source (Lloyd McKenzie). Lloyd's proposal is to use the BodyStructure resource instead of bodySite when a single code doesn't adequately describe a body location. The Condition resource provides body location code only. BodyStructure provides body location code, locationQualifier, morphology, description, and image. The mCODE body location provides: body location code, laterality, orientation, and relation to landmark. The relation to landmark includes landmark type, landmark location, distance from landmark to body location, and direction from landmark to body location. The use of landmarks is typical in determining the location of a tumor, for example, a breast tumor at 3 o'clock radially and 4 cm from the nipple of the right breast. Using BodyStructure "off the rack" would not be sufficient because it does not include relation to landmark. That extension would have to be added to BodyStructure. It is simpler and more direct to add the necessary extensions to bodySite instead of requiring a separate resource with yet another profile. Proposed resolution: Not persuasive.