Oxygen Therapy is most of the time done at home. Patients with severe breathing problems and diminished lung function get equipped with oxygen bottles or generating equipment. The screen consists of two parts, the first part lists the conditions necessitating the oxygen therapy

Oxygen Condition Codes.

The information in this part of the oxygen screen goes into a CRC segment with the qualifier '11'

The second half of the screen is more specific to the home oxygen therapy and equipment

Home Oxygen Therapy Information.

Information from here comes from the CR5 segment.