If you’re having trouble finding an oxygen administration coding in the CPT, the reason is that there is no specific oxygen administration codings for your medical billing. When a patient requires oxygen, the use of the oxygen is bundled into the day’s EM services. When a doctor prescribes the oxygen, you should use the appropriate office visit code that describes the procedure and services performed by the physicians that necessitates the need for oxygen. Full documentation of the medical billing claim will insure that your bundled oxygen administrations codings get full reimbursement. For example, if you have a physician who performs a detailed examination and incurs moderate complexity decision making …