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| ss77 | stor_ss77 | Comments |
|---|---|---|
| NONE | (internal use only, no storage code needed) | |
| IS | 0 | In situ |
| L | 1 | Localized |
| RE | 2 | Regional, direct extension |
| RN | 3 | Regional, lymph nodes only |
| RE+RN | 4 | Regional, extension and nodes |
| RNOS | 5 | Regional, NOS |
| D | 7 | Distant |
| NA | 8 | Not applicable |
| U | 9 | Unknown/Unstaged |
| <Any value> | Error |
