EOD Regional Nodes
This input is used in derivation
Notes
**Note 1:** **Regional nodes and nodes, NOS** * Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in EOD Mets. **Note 2:** **Pericholedochal nodes** * Pericholedochal nodes are coded in EOD Mets for jejunum and ileum primaries. **Note 3:** **CLINICAL AND PATHOLOGICAL codes** * This schema has lymph node codes that are defined as **CLINICAL** assessment only or **PATHOLOGICAL** assessment only. **No surgical resection** * Use **CLINICAL** assessment only codes (600, 700) when there is a clinical work up only and there is **NO surgical resection of the primary tumor or site** WITH * Any microscopic examination of regional lymph nodes, which includes FNA, core biopsy, sentinel node biopsy, lymph node excision, or lymph node dissection done during the clinical work up. **Surgical resection without neoadjuvant therapy** * Use **PATHOLOGICAL** assessment only codes (300) when there is a **surgical resection of the primary tumor or site** WITH * Any microscopic examination of regional lymph nodes, which includes FNA, core biopsy, sentinel node biopsy, lymph node excision done or lymph node dissection performed. **Surgical resection after neoadjuvant therapy** * If patient has neoadjuvant therapy, and the clinical assessment is equal to or greater than the pathological assessment, then the clinical assessment codes take priority. Otherwise, code the pathologic assessment. * See ***EOD 2018 General Instructions*** for further instructions on coding cases with neoadjuvant therapy, https://seer.cancer.gov/tools/staging/eod/.Default
999NAACCR Item
NAACCR #774| Code | Description | SS2018 N |
|---|---|---|
| 000 | No regional lymph node involvement | NONE |
| 300 | **PATHOLOGICAL ASSESSMENT ONLY** Duodenum (C170) - Duodenal - Gastroduodenal - Hepatic - Pancreaticoduodenal (inferior) - Pericholodochal (common bile duct) - Pyloric (infrapyloric, subpyloric, NOS) - Retropancreatic - Superior mesenteric Jejunum and ileum (C171, C172) - Cecal (anterior, posterior, retrocecal) (terminal ileum only) - Ileocecal (ileocolic) (terminal ileum only) - Mesenteric, NOS - Superior mesenteric | RN |
| 600 | **CLINICAL ASSESSMENT ONLY** One-two positive nodes clinically OR stated as Clinical N1 | RN |
| 700 | **CLINICAL ASSESSMENT ONLY** Three or more positive nodes clinically OR stated as Clinical N2 | RN |
| 800 | Positive nodes, number unknown Unknown if clinical or pathological assessment 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 medical record Death Certificate Only | U |