Masks

**Definition:** Devices that cover the nose and mouth to maintain aseptic conditions often for the prevention of the spread of infections (e.g. COVID19) or to administer inhaled anesthetics or other gases.

**Tree numbers:** - E07.325.877.500 - E07.700.500 - E07.700.560.782 - E07.858.594.750 - J01.637.708.560.782