Based on (Jira #), we understand that for the Days in Period calculation, the final minute of a 24-hour period is excluded, resulting in a day being defined as 23 hours and 59 minutes. However, if the LAST day of a hospitalization reaches the 23 hours and 59 minute mark, would that still be considered a full “day”?

Please review the examples below and let us know whether we are calculating hyperglycemic days correctly.

Example #1:
Patient hospitalization is 1/1/2025 @ 11:11 am to 1/3/2025 @ 11:10
Glucose Test result of > 300 mg/dL is documented on 1/2/2025 @ 22:46
We currently calculate the days as:
Day 1 1/1/2025 11:11 - 1/2/2025 11:10 - excluded (first day)
Day 2 1/2/2025 11:11 - 1/3/2025 11:10 
Measure observation 2 is 0, correct?

We expect Day 1 to be excluded. Should Day 2 not be considered a hyperglycemic event because, although a “day” is defined as 23 hours and 59 minutes, the final/last day of the encounter does not represent a full 24-hour period and ends one minute short?

Example #2 
Patient hospitalization is 1/01/2025 @ 10:12 am to 1/06/2025 @ 20:00
Day 1 1/1/2025 10:12 - 1/2/2025 10:11 - Skipped
Day 2 1/2/2025 10:12 - 1/3/2025 10:11 - eligible
Day 3 1/3/2025 10:12 - 1/4/2025 10:11 - eligible
Glucose Test result 1. > 300 mg/dL is documented on 1/02/2025 @ 16:00
Glucose Test result 2. > 300 mg/dL is documented on 1/03/2025 @ 10:12 am
Measure Observation 2 equals 2

Example #3
Patient hospitalization is 1/01/2025 @ 10:12 am to 1/04/2025 @ 10:11 am
Day 1 1/1/2025 10:12 - 1/2/2025 10:11 - Skipped
Day 2 1/2/2025 10:12 - 1/3/2025 10:11 - eligible
Day 3 1/3/2025 10:12 - 1/4/2025 10:11 - eligible but excluded because it is NOT a full 24 hours
Glucose Test result 1. > 300 mg/dL is documented on 1/02/2025 @ 16:00
Glucose Test result 2. > 300 mg/dL is documented on 1/03/2025 @ 10:12 am
Glucose Test result 3. > 300 mg/dL is documented on 1/04/2025 @ 10:11 am
Day 1 
Measure Observation 2 equals 2 because glucose test result #3 was documented at 10:11 a.m. and does not represent a full 24-hour period. Therefore, result #3 is considered the second result for Day 3, and only one event is counted per day. Is this correct?