Collaborative Stage

Collaborative Stage for TNM 7 - Revised 12/31/2009 [ Schema ]

CS Site-Specific Factor 1
Clinical Assessment of Regional Lymph Nodes

Note: In the rare instance that the number of clinically positive nodes is stated but a clinical N category is not stated, code 1-2 nodes as 100 (N1), 3-6 nodes as 200 (N2), 7-15 nodes as 310 (N3a), and 16 or more nodes as 320 (N3b). If the number is only described as "more than 7 nodes", code as 300 (N3, NOS).

Code	Description
000	Nodes not clinically evident
100	Clinically N1, NOS
200	Clinically N2, NOS
300	Clinically N3, NOS
310	Clinically N3a
320	Clinically N3b
400	Clinically positive regional nodes, NOS
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 if nodes are clinically evident