bony prominence

A pt came in for bilateral bumps on her arm. The dr states bony prominence, bilateral, congenital in her chart and on the superbill it states bone growth forearm. The MA said that it was calcification. Any help would be appreciated. Thank You I have looked at 756.4 and 733.9 but I am so new to this, I dont know if these are right, and if they are wrong I dont know where to go from here. Thanks for your help