| Full description | Acute appendicitis with generalized peritonitis, with abscess, unspecified as to perforation |
| Billable | Yes |
| Chapter | Chapter 11: Diseases of the digestive system (K00-K95) |
| Section | Diseases of appendix (K35-K38) |
| Parent code | K35.21 — Acute appendicitis with gen peritonitis, with abscess |