| Code | Description |
| A04.7 | Enterocolitis due to Clostridium difficile |
| K52.21 | Food protein-induced enterocolitis syndrome |
| K55.30 | Necrotizing enterocolitis, unspecified |
| K55.31 | Stage 1 necrotizing enterocolitis |
| K55.32 | Stage 2 necrotizing enterocolitis |
| K55.33 | Stage 3 necrotizing enterocolitis |
| P77.1 | Stage 1 necrotizing enterocolitis in newborn |
| P77.2 | Stage 2 necrotizing enterocolitis in newborn |
| P77.3 | Stage 3 necrotizing enterocolitis in newborn |
| P77.9 | Necrotizing enterocolitis in newborn, unspecified |