Collaborative Stage

Note 1: Code the status of extranodal extension whether assessed clinically or pathologically of any involved regional lymph node(s) coded in CS Lymph Nodes . Do not code extranodal extension for any nodes coded in CS Mets at DX.
Note 2: A statement of the presence or absence of extranodal extension in a pathology report takes priority over clinical assessment.
Note 3: If nodes are involved but the clinical documentation and/or pathologic documentation does not indicate extranodal extension, assign code 010 (no extranodal extension documented on the available reports).
Note 4: If the only documentation is a reference to clinically or pathologically involved nodes with no reference to extranodal extension, assign code 030 (no physical examination/imaging report and/or no pathology report available).

Code	Description
000	No regional lymph nodes involved
010	Extranodal extension not present Regional nodes described as mobile
020	Extranodal extension present Regional nodes described as fixed or matted
030	Regional nodes involved, unknown if extranodal extension
888	OBSOLETE DATA CONVERTED V0200 See code 988 Not applicable for this site
988	Not applicable: Information not collected for this case (May include cases converted from code 888 used in CSv1 for "Not applicable" or when the item was not collected. If this item is required to derive T, N, M, or any stage, use of code 988 may result in an error.)
999	Unknown; regional lymph nodes not stated Regional lymph nodes cannot be assessed Not documented in patient record

CS Site-Specific Factor 3
Extranodal Extension of Regional Lymph Nodes