| Full description | Corrosion of third degree of unspecified thumb (nail), subsequent encounter |
| Billable | Yes |
| Chapter | Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88) |
| Section | Burns and corrosions of external body surface, specified by site (T20-T25) |
| Parent code | T23.719 — Corrosion of third degree of unspecified thumb (nail) |