Collaborative Stage

Note 1: Code the status of extranodal extension whether assessed clinically or pathologically of any involved regional lymph node(s) coded in the CS Lymph Nodes field. Do not code extranodal extension in any nodes coded in CS Mets at DX in this field.
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 assessment 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 exam/imaging report and/or no pathology report available).

Code	Description
000	No lymph nodes involved
010	No extranodal extension Nodes described as mobile
020	Extranodal extension Nodes described as fixed or matted
030	Nodes involved, unknown if extranodal extension
888	OBSOLETE DATA CONVERTED V0200 See code 988 Not applicable for this schema
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 if regional lymph node(s) involved, not stated Regional lymph node(s) cannot be assessed Not documented in patient record

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