Existing Wording
~ Laboratory data and other Diagnostic Measures
~ Measurements emitted by Devices such as vital signs monitor or a glucose measurement device

Proposed Wording
~ Laboratory data
~ EKG data
~ Imaging data
~ Pulse Oximetry data
~ Measurements emitted by Devices a glucose monitor

Comments
Significant area where guidance is needed but lacking. The list of examples conspicuously does not mention observations/results from imaging procedures. The Observations template in other HL7 standards (e.g., CCDA) is used for imaging results. The entire page is silent about imaging results/observations, although when it lists "Laboratory data and other Diagnostic Measures" it leaves wide open to interpretation what "other" might mean (imaging, EKG, etc.). The proposed wording has more explicit and meaningful examples for the "other diagnostic measures" and also modifies the next bullet to avoid mentioning vital signs again (since they were in the first bullet).(From looking further into examples for Diagnostic Report in 4.21.7, I see that Imaging results are indeed represented as Observations, thus I strongly recommend mentioning imaging explicitly as an example in 4.20.1)

Grahame's Comments
well, ok, if it's a big deal. But need to make sure that it's clear that imaging reports are not observations