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**
* 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
* **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 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:** **Lymph nodes, NOS**
* Code 800 if regional lymph nodes are involved, but there is no indication which ones are involved.
| Code |
Description |
SS2018 N |
| 000 |
No regional lymph node involvement |
NONE |
| 100 |
**CLINICAL assessment only**
Palpable mobile unilateral inguinal lymph node |
RN |
| 200 |
**CLINICAL assessment only**
Palpable mobile greater than or equal to 2 unilateral inguinal nodes
Bilateral inguinal lymph nodes |
RN |
| 300 |
**CLINICAL assessment only**
Palpable fixed inguinal nodal mass
Pelvic lymphadenopathy (unilateral or bilateral) |
RN |
| 400 |
**PATHOLOGICAL assessment only**
Positive inguinal lymph nodes WITHOUT extranodal extension |
RN |
| 500 |
**PATHOLOGICAL assessment only**
Extranodal extension of any lymph nodes
OR pelvic lymph node metastases |
RN |
| 800 |
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) Pettaway, C.A., Srigley, J.R., Amin, M.B., et al. **Penis**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
