ICD-10-CM > S00-T88 > T20-T25 > T21 > T21.5 > T21.56 > T21.56XA T21.56XA Corrosion of first degree of male genital region, initial encounter Billable/Specific Copy Code Copy Description Applicable To Corrosion of first degree of penisCorrosion of first degree of scrotumCorrosion of first degree of testis