EOD Primary Tumor


**Note:** Connective tissues large enough to be given a specific name are adjacent structures. For example, prevertebral fascia and jugular vein have names. Continuous tumor growth from one organ into an adjacent named structure is coded to regional.
Code Description SS2018 T
000 In situ, intraepithelial, noninvasive IS
100 Confined to tissue or organ of origin Localized, NOS L
200 More than one region of pharynx involved - Hypopharynx - Nasopharynx - Oropharynx Pharynx and oral cavity involved Extension to adjacent structure(s) Fixation RE
700 Further contiguous extension: D
999 Unknown; extension cannot be assessed Primary tumor 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)