ICD-10-CM > S00-T88 > T20-T25 > T21 > T21.6 T21.6 Corrosion of second degree of trunk Non-Billable/Non-Specific Code First (T51-T65) to identify chemical and intent Use Additional external cause code to identify place (Y92) Codes T21.60Corrosion of second degree of trunk, unspecified siteT21.60XA..., initial encounterT21.60XD..., subsequent encounterT21.60XS..., sequelaT21.61Corrosion of second degree of chest wallT21.61XA..., initial encounterT21.61XD..., subsequent encounterT21.61XS..., sequelaT21.62Corrosion of second degree of abdominal wallT21.62XA..., initial encounterT21.62XD..., subsequent encounterT21.62XS..., sequelaT21.63Corrosion of second degree of upper backT21.63XA..., initial encounterT21.63XD..., subsequent encounterT21.63XS..., sequelaT21.64Corrosion of second degree of lower backT21.64XA..., initial encounterT21.64XD..., subsequent encounterT21.64XS..., sequelaT21.65Corrosion of second degree of buttockT21.65XA..., initial encounterT21.65XD..., subsequent encounterT21.65XS..., sequelaT21.66Corrosion of second degree of male genital regionT21.66XA..., initial encounterT21.66XD..., subsequent encounterT21.66XS..., sequelaT21.67Corrosion of second degree of female genital regionT21.67XA..., initial encounterT21.67XD..., subsequent encounterT21.67XS..., sequelaT21.69Corrosion of second degree of other site of trunkT21.69XA..., initial encounterT21.69XD..., subsequent encounterT21.69XS..., sequela