Code information about lung metastases only (discontinuous or distant metastases to brain) identified at the time of diagnosis. Lung involvement may be single or multiple. Information about lung 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’s and non-Hodgkin’s Lymphoma.
Use code 9 when it cannot be determined from the medical record whether the patient specifically had lung metastases; for example, when there is documentation of carcinomatosis but lung is not specifically mentioned as a metastatic site
0 = None; no lung metastases 1 = Yes
8 = Not applicable
9 = Unknown whether lung is involved; Not documented in patient record
This is a new item in 2016, replacing the METS_AT_DX_LUNG item.