ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.4 > T23.40 T23.40 Corrosion of unspecified degree of hand, unspecified site Non-Billable/Non-Specific Codes T23.401Corrosion of unspecified degree of right hand, unspecified siteT23.401A..., initial encounterT23.401D..., subsequent encounterT23.401S..., sequelaT23.402Corrosion of unspecified degree of left hand, unspecified siteT23.402A..., initial encounterT23.402D..., subsequent encounterT23.402S..., sequelaT23.409Corrosion of unspecified degree of unspecified hand, unspecified siteT23.409A..., initial encounterT23.409D..., subsequent encounterT23.409S..., sequela