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Note 1: Extracapsular extension is assessed on histopathologic examination of surgically resected involved regional nodes.
Note 2: Code the status of extracapsular extension assessed on histopathologic examination of any involved regional lymph node(s) coded in CS Lymph Nodes. Do not code extracapsular extension for any nodes coded in CS Mets at DX.
Note 3: If nodes are involved pathologically but there is no statement of extranodal extension in the pathology report, use code 010.
Note 4: Code microscopic or macroscropic extranodal extension as stated in the final diagnosis of the pathology report. If not stated in the final diagnosis, code microscopic if extranodal extension is described only in the microscopic section of the pathology report and macroscopic if extranodal extension is described in the gross section of the pathology report. Macroscopic extension takes priority over microscopic extension.
Note 5: Use code 040 if pathologic extracapsular extension is described with no further information and the pathology report is not available for review.

Code	Description
000	No regional lymph nodes involved pathologically
010	Regional lymph node(s) involved pathologically, no extracapsular extension pathologically
020	Regional lymph node(s) involved pathologically MICROSCOPIC extracapsular extension pathologically
030	Regional lymph node(s) involved pathologically MACROSCOPIC extracapsular extension pathologically
040	Regional lymph node(s) involved pathologically, extracapsular extension pathologically, unknown if microscopic or macroscopic
050	Regional lymph node(s) involved pathologically, unknown if extracapsular extension
988	Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code 988 may result in an edit error.)
997	Histopathologic examination of regional lymph nodes performed, results not available
998	No histopathologic examination of regional lymph nodes OR Fine needle aspiration or needle biopsy only of regional nodes
999	Unknown if regional lymph nodes involved pathologically, not stated Regional lymph nodes cannot be assessed Not documented in patient record

CS Site-Specific Factor 9Extracapsular Extension Pathologically, Lymph Nodes for Head and Neck