EOD Regional Nodes
This input is used for staging
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:** **Unnamed nodes** * **For Colon and Rectum ONLY**, any unnamed nodes that are removed with a colon or rectal resection are presumed to be regional pericolic or perirectal lymph nodes and are included in the EOD Regional Nodes code 300 (pericolic for sites C180 - C189, C199 and perirectal for sites C199 or C209). * This site-specific instruction applies only to colon and rectum tumors and was verified with subject matter experts. **Note 3:** **CLINICAL AND PATHOLOGICAL codes** * This schema has lymph node codes that are defined as **CLINICAL** assessment only or **PATHOLOGICAL** assessment only. * **PATHOLOGICAL** assessment only code (300) is used when * Any microscopic examination of regional lymph nodes, includes * FNA, core biopsy, sentinel node biopsy or lymph node excision done during the clinical work up **AND/OR** * Lymph node dissection performed * Pathological code 300 takes priority over codes 350-600, 800 * **CLINICAL** assessment only codes (350-600) are used when the **only** information on nodal involvement is based on **physical exam or imaging** * These codes are specifically for when there is no **microscopic confirmation** of regional lymph nodes (*Regional Nodes Positive = 98, 99*) * **Note:** Use code 300 if *Regional Nodes Positive is 01-90, 95* * Remaining codes (no designation of **CLINICAL** or **PATHOLOGICAL** only assessment) can be used based on clinical and/or pathological information * **Code 000** is used when there is no evidence of regional lymph nodes clinically **OR** lymph nodes are negative pathologically (*Regional Nodes Positive = 00, 98*) * **Code 800** is used when there are positive nodes (clinical or pathological), but the specific lymph nodes or number of positive nodes is unknown (*Regional Nodes Positive = 97*) * **Code 999** is used when the lymph node status is unknown and *Regional Nodes Positive = 99* **Note 4:** **Tumor Deposits** * Code 200 is defined as **PATHOLOGICAL** assessment only. This is used when * Primary tumor or site surgically resected with * Any positive microscopic examination of tumor deposits WITHOUT positive lymph nodes * If there are also positive lymph nodes, code 300Default
999NAACCR Item
NAACCR #774| Code | Description | SS2018 N |
|---|---|---|
| 000 | No regional lymph node involvement and no tumor deposits (TD) | NONE |
| 200 | **PATHOLOGICAL ASSESSMENT ONLY** Tumor deposits (TD) in the subserosa, mesentery, mesorectal or nonperitonealized pericolic or perirectal tissues **WITHOUT** regional nodal metastasis | RN |
| 300 | **PATHOLOGICAL ASSESSMENT ONLY** All sites (C180, C182-C189) - Colic, NOS - Epicolic (adjacent to bowel wall) - Mesenteric, NOS - Mesocolic, NOS - Paracolic - Pericolic Cecum (C180) - Cecal, NOS + Anterior cecal (prececal) + Posterior cecal (retrocecal) - Colic (right) - Ileocolic - Periappendiceal Ascending colon (C182) - Colic (middle-right branch, right) - Ileocolic Hepatic flexure (C183) - Colic (middle, right) - Ileocolic Transverse colon (C184) - Colic (middle) Splenic flexure (C185) - Colic (left, middle) - Mesenteric (inferior) Descending colon (C186) - Colic (left) - Mesenteric (inferior) - Sigmoid Sigmoid colon (C187) - Colic (left) - Mesenteric (inferior) - Rectal (superior) (hemorrhoidal) - Rectosigmoid - Sigmoid (sigmoidal) (sigmoid mesenteric) - Superior rectal (hemorrhoidal) Rectosigmoid (C199) - Hemorrhoidal (middle, superior) - Mesenteric (inferior) - Mesorectal - Pericolic - Perirectal - Rectal (middle, superior) - Sigmoid (mesenteric) Rectum (C209) - Hemorrhoidal (middle, superior) - Iliac (hypogastric, internal, obturator) (see EOD Mets for common, external, NOS) - Mesenteric (inferior) - Mesorectal - Perirectal - Rectal (inferior) - Sacral, NOS + Lateral sacral (laterosacral) + Middle sacral (promontorial) (Gerota's node) + Presacral - Sigmoidal (sigmoid mesenteric) | RN |
| 350 | **CLINICAL ASSESSMENT ONLY** One positive node clinically OR Stated as Clinical N1a | RN |
| 400 | **CLINICAL ASSESSMENT ONLY** Two-three positive nodes clinically OR Stated as Clinical N1b | RN |
| 450 | **CLINICAL ASSESSMENT ONLY** Stated as Clinical N1, number of positive nodes clinically unknown | RN |
| 500 | **CLINICAL ASSESSMENT ONLY** Four-six positive nodes clinically OR Stated as Clinical N2a | RN |
| 550 | **CLINICAL ASSESSMENT ONLY** Seven or more positive nodes clinically OR Stated as Clinical N2b | RN |
| 600 | **CLINICAL ASSESSMENT ONLY** Stated as Clinical N2, number of positive nodes clinically unknown | 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 node(s) not stated Regional lymph node(s) cannot be assessed Not documented in medical record Death Certificate Only | U |