T22.43 - Corrosion of unspecified degree of upper arm T22.4 - Corrosion of unspecified degree of shoulder and upper limb, except wrist and hand T22.43 - Corrosion of unspecified degree of upper arm T22.431 - Corrosion of unspecified degree of right upper arm T22.432 - Corrosion of unspecified degree of left upper arm T22.439 - Corrosion of unspecified degree of unspecified upper arm