NAACCR Item #3850: HER2 IHC Summary

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
3850 1 NAACCR 2018 18

NAACCR XML: Tumor.her2IhcSummary

HER2 IHC Summary is the summary score for HER2 testing by IHC.
HER2 IHC Summary is a Registry Data Collection Variable in AJCC. It is a new data item for cases diagnosed 1/1/2018+.
0Negative (Score 0)
1Negative (Score 1+)
2Equivocal (Score 2+)
Stated as equivocal
3Positive (Score 3+)
Stated as positive
4Stated as negative, but score not stated
7Test ordered, results not in chart
8Not 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.)
9Not documented in medical record
Cannot be determined (indeterminate)
HER2 IHC Summary not assessed or unknown if assessed
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.