ICD-10-CM > S00-T88 > T20-T25 > T22 > T22.5 > T22.54 T22.54 Corrosion of first degree of axilla Non-Billable/Non-Specific Codes T22.541Corrosion of first degree of right axillaT22.541A..., initial encounterT22.541D..., subsequent encounterT22.541S..., sequelaT22.542Corrosion of first degree of left axillaT22.542A..., initial encounterT22.542D..., subsequent encounterT22.542S..., sequelaT22.549Corrosion of first degree of unspecified axillaT22.549A..., initial encounterT22.549D..., subsequent encounterT22.549S..., sequela