It's really difficult to answer this because workflows and EHRs vary by health system. You may have to do your own analysis--are they coding E&Ms, infusions, consultations? Each of those requires a review of different clinical criteria. Are they expected to abstract all diagnosis codes documented in the encounter (including chronic conditions?). Is all of the chart information in one place, or do your coders have to look in more than one application? Are they using an encoder, or books? Are the coders also going to be expected to meet a certain accuracy percentage? If so, then productivity might need to be less. How long, on average is it taking now? Remember to factor in breaks, meals, meetings and other non-productive time like emails. In a hospital I worked at recently, the coders were expected to code 6-8 accounts per hour, but they had to go into a different and clunky application, abstract all diags, and validate orders for infusions.