EOD Primary Tumor
Notes
**Note 1:** **Benign/Borderline tumors**
* Benign (/0) or Borderline (/1) tumors **are always coded to 050** regardless of size, extension to adjacent sites, or multiple tumors.
**Note 2:** **Midline shift**
* A midline shift is not the same thing as crossing the midline (code 500).
* Documentation must state "crossing/crosses the midline"
**Note 3:** **Drop metastasis**
* Discontiguous spread, or "drop metastasis" are coded in EOD Mets.
| Code |
Description |
SS2018 T |
| 050 |
Benign or borderline brain
* Behavior is /0 or /1 |
B |
| 100 |
Confined to tissue or site of origin
Localized, NOS |
L |
| 500 |
Adjacent connective/soft tissue
Adjacent muscle
Bone (skull) (See code 700 for other bone involvement)
Brain for cranial nerve tumor(s) (See code 700 for sites other than cranial nerve tumors)
Major blood vessel(s)
Meningeal tumor infiltrates nerve
Nerve tumor infiltrates meninges (dura)
Sphenoid and frontal sinuses (skull) |
RE |
| 700 |
Bone other than skull (see code 500 for skull)
Brain except for cranial nerve tumor(s) (See code 500 for cranial nerve tumors)
Eye
Further contiguous extension |
D |
| 800 |
No evidence of primary tumor |
U |
| 999 |
Unknown; extension not stated
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)
(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
