Collaborative Stage Data Set - Revised 06/12/2013 FINAL

Breast

CS Site-Specific Factor 9
HER2: Immunohistochemistry (IHC) Test Interpretation

Note 1: Record the results of only the immunohistochemical (IHC) test for Human Epidermal Growth Factor Receptor 2 (HER2) in this field.
Note 2: The same laboratory test should be used to record information in CS Site-Specific Factors 8 and 9.
Note 3: If the test is not mentioned in the medical record, code to 999 unless there are circumstances under which the test isn't performed, for example no histologic specimen.

Code	Description
010	Positive/elevated
020	Negative/normal; within normal limits
030	Borderline; equivocal; indeterminate; undetermined whether positive or negative
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	Test ordered, results not in chart
998	Test not done (test not ordered and not performed)
999	Unknown or no information Not documented in patient record