EOD Regional Nodes

Notes

**Note 1:** Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in the field EOD Mets. **Note 2:** Inguinal lymph nodes are no longer coded as regional lymph nodes. See EOD Mets. **Note 3:** Isolated tumor cells (ITCs) are defined as single tumor cells or small clusters not greater than 0.2 mm, usually detected by immunohistochemical (IHC) or molecular methods. ITCs do not usually show evidence of malignant activity (e.g., proliferation or stromal reaction). Lymph nodes with ITCs only are not counted as positive nodes. * For positive ITCs with NO regional lymph node involvement, code 050 **Note 4:** Regional lymph nodes include (bilateral and contralateral) - Aortic, NOS + Lateral (lumbar) + Para-aortic + Periaortic - Iliac, NOS + Common + External + Internal (hypogastric, obturator, NOS) - Intra-abdominal - Lateral sacral (laterosacral) - Pelvic, NOS - Retroperitoneal, NOS
Code Description SS2018 N
000 No regional lymph node involvement NONE
050 Isolated tumors cells no greater than 0.2 mm NONE
300 Lymph node metastasis less than or equal to 10 mm FIGO Stage IIIA1i RN
400 Lymph node metastasis greater than 10 mm FIGO Stage IIIA1ii RN
500 Lymph node metastasis, size unknown FIGO Stage IIIAI RN
800 Regional lymph node(s), NOS Lymph node(s), NOS RN
999 Unknown; regional lymph node(s) not stated Regional lymph node(s) cannot be assessed Not documented in patient record Death Certificate Only U
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