As an attendant of the eCQM Expert to Expert Webinar, I have some follow up questions about the Hospital Harm - Severe Hyperglycemia [ecqi.healthit.gov].

• Is the inpatient hospitalization truncation to 10-days for the numerator only or for the denominator as well? Based on attachment 1, it seems like it's for the denominator as well, but the attachment 2 (slide from webinar - # 33) only mentions it for the numerator period which was also expressed during the webinar by the presenter. 

• My second question is about understanding the logic to calculate number of hypoglycemic 'days'. I am having trouble understanding the method to create 24-hour period that starts at the hour position and not the calendar day (attachment 3). How to capture these 24-hr periods if hyperglycemia occurs intermittently? For example, in attachment 4, the pt had >300 on the 7^th but did not have >300 again until the 9^th. Do I not count May 7th and also May 9^th as hyperglycemic days because they did not last for 24-hrs?  It will be easy to calculate the 24-hr periods if the dates are consecutive, but not sure how to accommodate the gaps. Did the pt in attachment 4 only have 1 full 24-hr period (i.e. 1 hyperglycemia day) from 12^th to 13^th May and would others days be excluded? It would be helpful to understand how many hyperglycemic days would this pt have as an example. Additionally, what date time point will you use if the pt had three hyper glycemic events on the same day like on May 13^th in attachment 4?