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| Display String | AJCC6 Storage Code | Comments |
|---|---|---|
| NX | 99 | NX |
| N0 | 00 | N0 |
| N0(i-) | 01 | N0(i-) |
| N0(i+) | 02 | N0(i+) |
| N0(mol-) | 03 | N0(mol-) |
| N0(mol+) | 04 | N0(mol+) |
| N1 | 10 | N1 |
| N1NOS | 19 | N1 NOS |
| N1a | 11 | N1a |
| N1b | 12 | N1b |
| N1c | 13 | N1c |
| N1mi | 18 | N1mi |
| N2 | 20 | N2 |
| N2NOS | 29 | N2 NOS |
| N2a | 21 | N2a |
| N2b | 22 | N2b |
| N2c | 23 | N2c |
| N3 | 30 | N3 |
| N3NOS | 39 | N3 NOS |
| N3a | 31 | N3a |
| N3b | 32 | N3b |
| N3c | 33 | N3c |
| N4 | N4 | |
| NA | 88 | Not applicable |
| <Any value> | Error |
