99140 is the only qualifying-circumstances modifier that adds _____ additional units to the anesthesia CPT code to which it is appended:

Question

Quizplus · Accepted Answer

The 99140 modifier is used to indicate that an anesthesia service involved unusually difficult circumstances that required additional effort beyond the usual service. It adds 2 additional units to the anesthesia CPT code to which it is appended.

99140 Is the Only Qualifying-Circumstances Modifier That Adds _____ Additional