EOD Regional Nodes

Notes

**Note 1:** All lymph nodes (regional and distant) involvement is coded in this field. **Note 2:** Regional lymph nodes include * Cervical * Parotid * Preauricular * Submandibular **Note 3:** 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	SINGLE lymph node region superior to the mediastinum	RN
400	MULTIPLE lymph node regions superior to the mediastinum	RN
500	Unknown number of lymph node region(s) OR regions draining the ocular adnexal structures and superior to the mediastinum	RN
600	Mediastinal	D
700	Diffuse OR disseminated involvement of peripheral and central lymph node regions	D
750	Distant lymph node(s), NOS	D
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) Heegaard, S., Finger, P.T., et al. **Ocular Adnexal Lymphoma**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017