ICD-10-CM > S00-T88 > T20-T25 > T21 > T21.7 > T21.72 T21.72 Corrosion of third degree of abdominal wall Non-Billable/Non-Specific Applicable To Corrosion of third degree of flankCorrosion of third degree of groin Codes T21.72XA..., initial encounterT21.72XD..., subsequent encounterT21.72XS..., sequela