ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.7 > T23.76 T23.76 Corrosion of third degree of back of hand Non-Billable/Non-Specific Codes T23.761Corrosion of third degree of back of right handT23.761A..., initial encounterT23.761D..., subsequent encounterT23.761S..., sequelaT23.762Corrosion of third degree of back of left handT23.762A..., initial encounterT23.762D..., subsequent encounterT23.762S..., sequelaT23.769Corrosion of third degree back of unspecified handT23.769A..., initial encounterT23.769D..., subsequent encounterT23.769S..., sequela