Collaborative Stage

Note 1: Record the results of only the Chromogenic In Situ Hybridization (CISH) test for Human Epidermal growth factor Receptor 2 (HER2) in this field. The test determines whether there are additional copies of the HER2/neugene in the tumor cells. The results are reported as the mean number of copies of the HER2/neugene on either 30 or 60 tumor cells.
Note 2: Record the actual mean if given. Enter the stated mean to two decimal places. Use a trailing zero if needed. Example: a mean of 1.8 is entered as 180. A mean of 5.64 is entered as 564.
Note 3: If the test was done but the actual mean is not stated, code 998.

Code	Description
100-986	Mean of 1.00 to 9.86 (enter exact mean to two decimal places)
987	Mean of 9.87 or greater
988	Not applicable: Information not collected for this case
997	Test ordered, results not in chart
998	Test not done (test was not ordered and was not performed)
999	Unknown or no information Not documented in patient record

CS Site-Specific Factor 12
HER2: CISH Test Lab Value