S50.82 - Blister (nonthermal) of forearm S50.8 - Other superficial injuries of forearm S50.82 - Blister (nonthermal) of forearm S50.821 - Blister (nonthermal) of right forearm S50.822 - Blister (nonthermal) of left forearm S50.829 - Blister (nonthermal) of unspecified forearm