Septic Shock Onset Time Criteria

The Reporting system uses the following criteria to define a time, referred to as Septic Shock Onset Time (also known as Time Zero), that denotes when a patient is suspected of having Septic Shock, to support Sepsis bundle compliance reporting.

Septic Shock Time Zero is identified as follows:

  • Septic Shock Diagnosed Condition onset date, if present.
  • If the Septic Shock Diagnosed Condition onset date is not present, the earliest of the following dates is used:
    • Septic Shock Diagnosed Condition first appearance using the system last modified date.
    • The latest date among the Septic Shock Criteria that identified the condition (only identified when the Lactate occurred, up to 6 hours before Severe Sepsis Time Zero, or anytime afterward in the active encounter).
      • Severe Sepsis Time Zero (refer to the previous section, Sepsis Onset Time Criteria.
      • Lactate greater than or equal to 4.0 mmol/L (observation effective date, or issued date if effective date is not present).
Note: A patient without a Septic Shock diagnosis could have a lactate level greater than or equal to 4 every 4 hours for a 12 hour period without having satisfied the Severe Sepsis criteria. This patient would not be considered to be in Septic Shock. If the patient satisfies the Severe Sepsis Criteria at hour 10, then the lactate reading at hour 8 (the second reading) should be used to determine Septic Shock Time Zero.