Collaborative Stage for TNM 7 - Revised 11/15/2009 [ Schema ]
| Code | Description |
| 000 | No mass/tumor found |
| 001-979 | Exact thickness in tenths of millimeters Examples: 001 0.1 millimeter 010 1 millimeter 042 4.2 millimeters 100 10 millimeters, 1 centimeter 103 10.3 millimeters |
| 980 | 98.0 millimeters or larger |
| 987 | Not applicable, in situ carcinoma |
| 988 | Not applicable: Information not collected for this case |
| 990 | Microinvasion Microscopic focus or foci only; no depth given |
| 998 | No surgical specimen |
| 999 | Not documented in patient record Unknown, thickness not stated |