EOD Regional Nodes

Notes

**Note 1:** Code only regional nodes and nodes, NOS in this field. Distant nodes are coded in EOD Mets. **Note 2:** 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:** 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 300
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 All colon subsites (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
800 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
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