TISS76-2 hour rule

Special instruction regarding collection of TISS apply for two hours on either side of midnight.

1. If a patient is admitted to ICU at or after 2200, nursing activities for the time before midnight are included on the next day's TISS score.
2. If a patient passed away or is discharged from ICU at or before 0200 hours, nursing activities for the time after midnight are included on the previous day's TISS score.
3. If a patient's time of admission and discharge falls within the above 2 periods, i.e. LOS ≤ 4 hours, one TISS score must be done using the admit date.

Examples

• If a patient is admitted at 2200 hours on November 2.01 then the Day 1 TISS will start on November 3.01 and will be done done retrospectively by the night staff on November 3.01 looking back at the previous 26 hrs of care.

• If a patient is discharged at 0200 hours on December 10.01 then the last day TISS score will be on December 09.01 which will be 26 hours long to include these 2 hours.

• Also see:
  • TISS Collection Guide
  • ICU TISS form