| Full description | Corrosion of unspecified degree of lip(s), 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 | T20.42 — Corrosion of unspecified degree of lip(s) |