Collaborative Stage Data Set - Revised 05/26/2013 FINAL
| Code | Description |
| 000 | All regional lymph nodes negative |
| 010 | Unilateral - all positive regional nodes with same laterality OR only one regional node positive |
| 020 | Bilateral - positive bilateral regional lymph nodes |
| 030 | Laterality unknown - positive regional lymph nodes with unknown laterality |
| 988 | Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code 988 may result in an edit error.) |
| 998 | Lymph nodes not assessed |
| 999 | Unknown or no information Not documented in patient record |