Coding a medical billing claim for oxygen administration can be a tricky beast because there is not a specific oxygen administration code assigned. Normally the administration of oxygen is bundled into an emergency visit. 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 on a patient and decides to administer oxygen to a known patient who is in the …