EOD Regional Nodes
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:** **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 725, 775, 800
* **CLINICAL** assessment only codes (725, 775) 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*
| Code |
Description |
SS2018 N |
| 000 |
No regional lymph node involvement |
NONE |
| 300 |
**PATHOLOGICAL ASSESSMENT ONLY**
Celiac artery
Cystic duct (Calot's node)
Hepatic artery
Node of foramen of Winslow (omental) (epiploic)
Pancreaticoduodenal
Pericholedochal (common bile duct)
Periduodenal
Peripancreatic (near head of pancreas only)
Porta hepatis (portal) (periportal) (hilar) (in hilus of liver)
Portal vein
Portacaval
Retroperitoneal, NOS
Superior mesenteric |
RN |
| 725 |
**CLINICAL ASSESSMENT ONLY**
One-three positive nodes clinically OR stated as Clinical N1 |
RN |
| 775 |
**CLINICAL ASSESSMENT ONLY**
Four 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 |
(1) Fritz AG, Ries LAG (eds). **SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998)**, National Cancer Institute, NIH Pub. No. 98-2313, Bethesda, MD, 1998
(2) Young JL Jr, Roffers SD, Ries LAG, Fritz AG, Hurlbut AA (eds.). **SEER Summary Staging Manual-2000: Codes and Coding Instructions**, National Cancer Institute, NIH Pub. No. 01-4969, Bethesda, MD, 2001.
(3) Collaborative Stage Work Group of the American Joint Committee on Cancer. **Collaborative Stage Data Collection System User Documentation and Coding Instructions, version 02.05**. American Joint Committee on Cancer (Chicago, IL)
(4) Gress, D.M., Edge, S.B., Gershenwald, J.E., et al. **Principles of Cancer Staging**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
(5) Zhu, A.X., Pawlik, T.M., Vauthey, J.N., et al. **Gallbladder**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
