Collaborative Stage for TNM 7 - Revised 10/22/2009 [ Schema ]
| Code | Description |
| 001-024 | 1 - 24 cores examined (code the exact number of cores examined) |
| 025 | 25 or more cores examined |
| 988 | Not applicable: Information not collected for this case |
| 991 | Biopsy cores examined, number unknown |
| 998 | No needle core biopsy performed |
| 999 | Unknown or no information Not documented in patient record |