AJCC Chapter Calculation
| Histology | AJCC ID | Description |
|---|---|---|
| 8000, 8010, 8013, 8020, 8035, 8041, 8070, 8140, 8144, 8160, 8163, 8244, 8246, 8255, 8260, 8310, 8480, 8490, 8560, 8576 | 27 | Ampulla of Vater |
| 8001-8005, 8011-8012, 8014-8015, 8021-8034, 8040, 8042-8060, 8071-8131, 8141-8143, 8145-8149, 8154, 8157, 8161-8162, 8170-8231, 8243, 8245, 8247-8248, 8250-8254, 8256-8257, 8261-8300, 8311-8474, 8481-8482, 8500-8552, 8561-8575, 8580-8682, 8690-8700, 8720-8790, 9700-9701 | XX | Other Ampulla of Vater |
| Histology | AJCC ID | Description |
|---|---|---|
| 8000, 8010, 8013, 8020, 8035, 8041, 8070 | 27 | Ampulla of Vater |
| 8140, 8144, 8160, 8163 | 27 | Ampulla of Vater |
| 8244, 8246, 8255, 8260 | 27 | Ampulla of Vater |
| 8310 | 27 | Ampulla of Vater |
| 8480, 8490 | 27 | Ampulla of Vater |
| 8560, 8576 | 27 | Ampulla of Vater |
| 8001-8005, 8011-8012, 8014-8015, 8021-8034, 8040, 8042-8060, 8071-8131 | XX | Other Ampulla of Vater |
| 8141-8143, 8145-8149, 8154, 8157, 8161-8162, 8170-8231 | XX | Other Ampulla of Vater |
| 8243, 8245, 8247-8248, 8250-8254, 8256-8257, 8261-8300 | XX | Other Ampulla of Vater |
| 8311-8474, 8481-8482, 8500-8552, 8561-8575, 8580-8682 | XX | Other Ampulla of Vater |
| 8690-8700, 8720-8790, 9700-9701 | XX | Other Ampulla of Vater |