EOD Mets
Notes
**Note 1:** **Benign/borderline tumors**
* Code 00 for benign (behavior /0) and borderline (behavior /1) tumors.
**Note 2:** **Leptomeningeal metastases**
* Leptomeningeal metastases, also known as carcinomatous meningitis and meningeal carcinomatosis, refers to the spread of malignant cells through the CSF space.
* These cells can originate from primary CNS tumors (e.g., in the form of drop metastases), as well as from distant tumors that have metastasized via hematogenous spread (code 70).
| Code |
Description |
SS2018 M |
| 00 |
No distant metastasis
Unknown if distant metastasis |
NONE |
| 10 |
Distant lymph node(s) |
D |
| 70 |
Metastasis within CNS and CSF pathways
* Carcinomatous meningitis
* Drop metastasis
* Leptomeningeal metastases
* Meningeal carcinomatosis
Metastasis outside the CNS
* Extra-neural metastasis
Carcinomatosis
Distant metastasis WITH or WITHOUT distant lymph node(s)
Distant metastasis, NOS |
D |
| 99 |
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) Laws, E.R., Curran, W.J., et al. **Brain and Spinal Cord**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
