Use of a Modifier Reduces Inconsistency in the American Society of Anesthesiologists Physical Status Classification in Parturients

In Brief In this study, we sought to determine whether there is a significant discrepancy among a group of practitioners when rating pregnant patients using the ASA Physical Status Classification and whether this discrepancy could be resolved with the addition of a modifier for pregnancy. Our results indicate that significant discrepancy occurs and that it is reduced with the use of the modifier, especially when referring to the healthy parturient. IMPLICATIONS: The current ASA Physical Status Classification does not consistently address the physiological changes of pregnancy. The use of a modifier, G (for gravid), reduces inconsistency in assigning the ASA Physical Status Classification.