Code information about brain metastases only (discontinuous or distant metastases to brain) identified at the time of diagnosis. This field should not be coded for involvement of spinal cord or other parts of the central nervous system. Brain involvement may be single or multiple. Information about brain involvement may be clinical or pathologic.
Code this field whether or not the patient had any preoperative systemic therapy.
This field should be coded for all solid tumors, Kaposi sarcoma, Unknown Primary Site, and Other and Ill-Defined Sites.
Use code 8 for Hematopoietic, reticuloendothelial, Immunoproliferative and Myeloproliferative Neoplasms, and Hodgkin and non-Hodgkin’s Lymphoma.
Use code 9 when it cannot be determined from the medical record whether the patient specifically had brain metastases; for example, when there is documentation of carcinomatosis but brain is not specifically mentioned as a metastatic site.
0 = None; no brain metastases 1 = Yes
8 = Not applicable
9 = Unknown whether brain is involved; Not documented in patient record
This is a new item in 2016, replacing the CS_METS_AT_DX_BRAIN item.