NAACCR Item #3850: HER2 IHC Summary

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Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired Column #
3850 1 NAACCR 2018 18 1757 - 1757

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+.
0 Negative (Score 0)
1 Negative (Score 1+)
2 Equivocal (Score 2+)
Stated as equivocal
3 Positive (Score 3+)
Stated as positive
4 Stated as negative, but score not stated
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 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.