HER2 Overall Summary


**Note 1:** This SSDI is effective for diagnosis years 2021+ * For cases diagnosed 2018-2020, leave this SSDI blank **Note 2:** Physician statement of HER2 Overall Summary can be used to code this data item when no other information is available. **Note 3:** HER2 may be recorded for all histologies; however, it is primarily performed for adenocarcinomas. If information is not available, code 9. **Note 4:** The result of the HER2 test performed on the primary tissue is to be recorded in this data item. * Use the highest (positive versus negative) when there are multiple results **Note 5:** If neoadjuvant therapy is given, record the assay from tumor specimens prior to neoadjuvant therapy. * If neoadjuvant therapy is given and there are no HER2 results from pre-treatment specimens, report the findings from post-treatment specimens




NAACCR #3855


SSDI 2021–
Code Description
0 HER2 negative; equivocal
1 HER2 positive
7 Test ordered, results not in chart
8 Not applicable: Information not collected for this case (If this item is required by your standard setter, use of code 8 will result in an edit error.)
9 Not documented in medical record Cannot be determined (indeterminate) HER2 Overall Summary status not assessed or unknown if assessed
<BLANK> N/A - Diagnosis year is prior to 2021