Collaborative Stage

Note 1: AJCC defines microscopic lymph node metastases or "micrometastases" as those which are clinically inapparent by palapation and/or imaging but are pathologically positive. Micrometastases are diagnosed after sentinel or other node biopsy or elective lymphadenectomy. "Macrometastases" are clinically detectable nodal metastases confirmed by therapeutic lymphadenectomy or when nodal metastasis exhibits gross extracapsular extension.
Note 2: Use code 005 if nodes are described as clinically negative and are also negative on pathologic examination, or no pathologic examination is performed. Use code 010 if nodes are described as clinically negative but are positive on pathologic examination.
Note 3: Use codes 043-050 if nodes are described as clinically positive.
Note 4: Use code 150 to code information about nodal involvement with in transit satellite metastases. In transit metastasis without nodal involvement is coded to 100.
Note 5: Use code 999 if no information is available about the clinical evaluation of lymph nodes.
Note 6: Codes 043-050 and 150 are appropriate for cases with neoadjuvant treatment, where nodes are described as clinically positive before treatment but are shown to be either negative or positive on pathologic examination after treatment.

Code	Description
000	OBSOLETE DATA RETAINED V0204 No lymph node metastasis
001	OBSOLETE DATA CONVERTED V0203 See code 010 Clinically occult (microscopic) lymph node metastases only
002	OBSOLETE DATA CONVERTED V0203 See code 020 Clinically apparent (macroscopic) lymph node metastases
005	Clinically negative lymph node metastasis AND No pathologic examination performed Or unknown if pathologic examination performed Or nodes negative on pathologic examination
010	Clinically occult (microscopic) lymph node metastasis only (Nodes negative on clinical examination, positive on pathologic examination)
020	OBSOLETE DATA RETAINED V0204 Clinically apparent (macroscopic) lymph node metastasis
043	Clinically apparent nodal metastasis in 1 regional node
045	Clinically apparent nodal metastasis in 2-3 regional nodes
048	Clinically apparent nodal metastasis in 4+ regional nodes
050	Clinically apparent nodal metastasis in regional node(s) but number not specified
100	Clinically apparent in transit metastasis only
150	Clinically apparent in transit metastasis and clinically apparent nodal metastasis (at least one node)
988	Not applicable: Information not collected for this case (If this item is required by your standard setter, use of code 988 will result in an edit error.)
999	Unknown clinically if nodes are involved Unknown or no information about clinical nodal involvement Clinical nodal involvement not documented in patient record

CS Site-Specific Factor 3
Clinical Status of Lymph Node Mets