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 |