Unlisted procedure 31299 - Our patient had a large nasal mass which extended to the back wall of her throat. comparable code 31225 was suggested. I disagree as this is for 'jaw bone'. I chose 42808 and would like any feed back regarding this code selection. 31255 code was chose because her CT scanning showed attachment to the medial wall of the maxilla. Mass was from the nasopharynx down into the posterior pharynx.