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:** Bilateral or contralateral nodes are classified as regional nodes for truncal tumors (C445) with bidirectional drainage to primary nodal basins, as shown on lymphoscintigraphy. Truncal tumors may also drain to both cephalad and caudal primary nodal basins as shown on lymphoscintigraphy.
* Clinical assessment of bilateral/contralateral or cephalad/caudal regional nodal involvement is required for tumors where lymphoscintigraphy is not performed
**Note 3:** Contiguous or secondary nodal basins are the next nodal drainage basins beyond the primary nodal basins and are coded as regional nodes.
| Code |
Description |
SS2018 N |
| 000 |
No regional lymph node involvement |
NONE |
| 300 |
Skin of trunk (C445) (includes contralateral and bilateral)
- Upper trunk
+ Axillary
+ Cervical
+ Internal mammary
+ Supraclavicular
- Lower trunk
+ Superficial inguinal (femoral) (lower trunk only)
(C446-C449: Single, Ipsilateral, Multiple. See EOD Mets
for contralateral or bilateral nodes)
Skin of upper limb and shoulder (C446)
- Axillary
- Cervical
- Epitrochlear for hand/forearm
- Internal mammary (parasternal)
- Spinal accessory for shoulder
- Supraclavicular (transverse cervical)
Skin of lower limb and hip (C447)
- Femoral (superficial inguinal)
- Inguinal
- Popliteal for heel and calf |
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 patient 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)
