What Should Be In a Letter of Medical Necessity?

A skillfully drafted letter of medical necessity is an essential part of a request for funding for assistive technology. A letter of medical necessity, whether being submitted to the Department of Human Services, a private insurance company or other funding source, should contain the information needed to convince the reader that the requested assistive technology is necessary to meet the medical needs of the person for whom the assistive technology is being requested. This fact sheet is intended as a guide to preparing such a letter of medical necessity.

The letter of medical necessity should be written by a medical professional familiar with the requesting party’s medical condition. The professional should briefly describe their credentials and relationship to the requesting party. This professional may be a physician, a nurse, a physical therapist, an occupational therapist or other medical professional. However, note that most funding sources require a physician’s prescription as part of the funding request. Therefore, letters of medical necessity not written by a physician should be endorsed by a physician or accompanied by a physician’s prescription.