ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.4 > T22.40 T22.40 Corrosion of unspecified degree of shoulder and upper limb, except wrist and hand, unspecified site Non-Billable/Non-Specific Codes T22.40XA..., initial encounterT22.40XD..., subsequent encounterT22.40XS..., sequela