Collaborative Stage Data Set - Revised 10/06/2010 FINAL
| Code | Description |
| 000 | No mass/tumor found |
| 001-988 | 001 - 988 millimeters (mm) (Exact size to nearest mm) |
| 989 | 989 mm or larger |
| 990 | Microscopic focus or foci only and no size of focus given |
| 991 | Described as "less than 1 centimeter (cm)" |
| 992 | Described as "less than 2 cm," or "greater than 1 cm," or "between 1 cm and 2 cm" |
| 993 | Described as "less than 3 cm," or "greater than 2 cm," or "between 2 cm and 3 cm" |
| 994 | Described as "less than 4 cm," or "greater than 3 cm," or "between 3 cm and 4 cm" |
| 995 | Described as "less than 5 cm," or "greater than 4 cm," or "between 4 cm and 5 cm" |
| 999 | Unknown; size not stated Size of tumor cannot be assessed Not documented in patient record |