EOD Primary Tumor
This input is used for staging
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:** **Infratentorial and Supratentorial** * The tentorium cerebelli is an extension of the dura mater that separates the cerebellum from the inferior portion of the occipital lobes. * The location of the tumor above or below the tentorium can help in determining the type of tumor; also, most adult brain tumors are supratentorial, and most pediatric brain tumors are infratentorial. * In the following list, note that ICD-O-3 codes C71.0 and C71.9 include both supratentorial and infratentorial subsites. - The following subsites are **Infratentorial** * All subsites for codes C716-C717 * Hypothalamus (C710) * Pallium (C710) * Posterior cranial fossa (C719) * Thalamus (C710) - The following subsites are **Supratentorial** * All subsites for codes C711-C715 * Primary site C710 (excluding hypothalamus, pallium, thalamus) * Anterior cranial fossa (C719) * Corpus callosum (C718) * Middle cranial fossa (C719) * Tapetum (C718) * Suprasellar (C719) **Note 3:** **Midline shift** * A midline shift is not the same thing as crossing the midline (code 500). * Documentation must state "crossing/crosses the midline" **Note 4:** **Drop metastasis** * Discontiguous spread, or "drop metastasis" are coded in EOD mets.Default
999NAACCR Item
NAACCR #772| Code | Description | SS2018 T |
|---|---|---|
| 050 | Benign or borderline brain tumor * Behavior /0 or /1 | B |
| 100 | Infratentorial tumor confined to - Brain stem or meninges of brain stem (one side) + Medulla oblongata + Midbrain (mesencephalon) + Pons - Cerebellum or meninges of cerebellum (one side or midline) + Lateral lobes + Median lobe of cerebellum + Vermis - Hypothalamus - Pallium - Thalamus Infratentorial tumor - Both cerebellum and brain stem involved with tumor on one side Supratentorial tumor confined to - Cerebral hemisphere (cerebrum) or meninges of cerebral hemisphere (one side) + Frontal lobe + Occipital lobe + Parietal lobe + Temporal lobe Confined to ventricles Tumor invades or encroaches upon ventricular system Confined to brain, NOS Confined to meninges, NOS | L |
| 500 | Tumor crosses the midline All sites extension to/invasion of - Bone (skull) (See code 700 for other bone involvement) - Contralateral hemisphere - Corpus callosum (including splenium) - Major blood vessel(s) - Meninges (e.g., dura) - Nerves (cranial, NOS) - Spinal cord/canal Supratentorial tumor extends/invades infratentorially to involve - Brain stem - Cerebellum - Hypothalamus - Pallium - Posterior cranial fossa - Thalamus Infratentorial tumor extends/invades supratentorially to involve - Anterior cranial fossa - Cerebrum (cerebral hemisphere) (excluding hypothalamus, pallium, thalamus) - Middle cranial fossa - Suprasellar brain - Tapetum | RE |
| 700 | Circulating cells in cerebral spinal fluid (CSF) Bone other than skull (See code 500 for skull) Nasal cavity Nasopharynx Other direct extension outside CNS Posterior pharynx 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 |