Breast - Regional Nodes Positive

Note 1: Record this field even if there has been preoperative treatment.
Note 2: Lymph nodes with only isolated tumor cells (ITCs) are NOT counted as positive lymph nodes. Only lymph nodes with metastases greater than 0.2mm (micrometastases or larger) should be counted as positive. If the pathology report indicates that nodes are positive but size of the metastases is not stated, assume the metastases are > 0.2mm and code the lymph nodes as positive in this field.
Note 3: Record all positive regional lymph nodes in this field. Record the number of positive ipsilateral regional level I-II axillary nodes separately in the appropriate Site-Specific Factor field.

Code	Description
00	All nodes examined negative.
01-89	1 - 89 nodes positive (code exact number of nodes positive)
90	90 or more nodes positive
95	Positive aspiration or core biopsy of lymph node(s)
97	Positive nodes - number unspecified
98	No nodes examined
99	Unknown if nodes are positive; not applicable Not documented in patient record