NAACCR Item #3827: Estrogen Receptor Summary

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
3,827 1 NAACCR 2018 18

NAACCR XML: Tumor.estrogenReceptorSummary


ER (Estrogen Receptor) Summary is a summary of results of the estrogen receptor (ER) assay.


This data item is required for prognostic stage grouping in AJCC 8th edition, Chapter 48, Breast. It was previously collected as Breast CS SSF # 1.


0ER negative (0.0% or less than 1%)
1ER positive
7Test ordered, results not in chart
9Not documented in medical record Cannot be determined (indeterminate) ER (Estrogen Receptor) Summary status 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.