Bedside commodes can be a covered item by your insurance. Medicare for instance stipulates commodes are covered if:
1. The patient is confined to a single room, or
2. The patient is confined to one level of the home environment and there is no toilet on that level, or
3. The patient is confined to the home and there are no toilet facilities in the home.
Essentially your doctor needs to document the patient is incapable of utilizing their regular toilet in order for the insurance to claim it is medically necessary. Proof comes from visit/chart/soap/progress notes from medical professionals assisting the patients care.
Please note: Diagnoses or statements written on a prescription are not accepted as proof of medical need. Letters are not accepted as proof of medical need. Only office/visit/chart/soap/progress notes are accepted as proof of medical need.