T22.53 - Corrosion of first degree of upper arm T22.5 - Corrosion of first degree of shoulder and upper limb, except wrist and hand T22.53 - Corrosion of first degree of upper arm T22.531 - Corrosion of first degree of right upper arm T22.532 - Corrosion of first degree of left upper arm T22.539 - Corrosion of first degree of unspecified upper arm