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:** **Bilateral or Contralateral nodes**
* 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:** **Nodal basins**
* Contiguous or secondary nodal basins are the next nodal drainage basins beyond the primary nodal basins and are coded as regional nodes.
**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 |
| 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 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)
