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:** This schema has lymph node codes that are defined as **CLINICAL** assessment only or **PATHOLOGICAL** assessment only.
+ **CLINICAL** assessment only codes (100, 200, 300) are used when there is a clinical work up only and there is no surgical resection of the primary tumor or site. This includes FNA, core biopsy, sentinel node biopsy, or lymph node excision
- *Exception:* If patient has neoadjuvant therapy, and the clinical assessment is greater than the pathological assessment, then the clinical assessment code would take priority
+ **PATHOLOGICAL** assessment only codes (400, 500) are used when
- Primary tumor or site surgically resected with
- 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
+ Remaining codes (no designation of **CLINICAL** or **PATHOLOGICAL** only assessment) can be used based on clinical and/or pathological information
**Note 3:** Regional lymph nodes include
- Iliac, NOS
+ External
+ Internal (hypogastric, obturator)
- Inguinal, NOS
+ Node of Cloquet or Rosenmuller (highest deep inguinal)
+ Superficial [femoral]
- Pelvic, NOS
**Note 4:** Code 800 if regional lymph nodes are involved, but there is no indication which ones are involved.
(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
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