Diagnosing Oral Lichen Planus (OLP)

I have not yet been officially diagnosed with OLP, but the Oral Surgeon I went to wants to do a tongue and cheek biopsy, based on the white "plaque" on the tongue and cheeks, and now burning of my tongue most of the time. I am wondering if others have been diagnosed without a biopsy. I am questioning the need for this procedure. Thanks for any responses.