T22.51 - Corrosion of first degree of forearm T22.5 - Corrosion of first degree of shoulder and upper limb, except wrist and hand T22.51 - Corrosion of first degree of forearm T22.511 - Corrosion of first degree of right forearm T22.512 - Corrosion of first degree of left forearm T22.519 - Corrosion of first degree of unspecified forearm