If your insurance company does cover the cost of wig, you may need your doctor to write a letter or prescription that includes information as to why you need the wig, noting that it is not for cosmetic purposes, but for your emotional well-being.
Request that your doctor prescribe a "hair prosthesis or cranial hair prosthesis," not just a "wig." Insurance companies are particular about wording, and most will not cover a "wig" but will cover a "hair prosthesis," even though they are the same thing.
If Your Insurance Company Won't Cover the Cost of a WigIf you insurance company won't cover the cost, talk to your doctor. Many cancer centers are familiar with local organizations that provide recycled wigs, or free and reduced-cost wigs.
The American Cancer Society may be able to help. Contact your local chapter and they may be able to provide assistance.