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Table 3 Severity rating based on the JCAHO Sentinel Event Policy for adverse events not related to the natural course of the patient's illness or underlying condition.

From: Towards standardized measurement of adverse events in spine surgery: conceptual model and pilot evaluation

Code

Description

0

No quality of care concerns evident.

1

Did not and unlikely to have had an adverse effect.

2

Did not but had the potential to have had an adverse effect.

3

Had an adverse effect but not life threatening.

4

Resulted in loss of major physical function or potentially life threatening.

5

Demonstrated a life threatening situation or resulted in death.