ER (Estrogen Receptor) Percent Positive or Range


**Note 1:** Physician statement of ER (Estrogen Receptor) Percent Positive or Range can be used to code this data item. **Note 2:** Code this data item using the same report used to record ER Summary. **Note 3:** If ER is negative, or percentage is less than 1%, code 000. **Note 4:** The actual ER (1-100%) percent takes priority over the range codes. **Note 5:** If ER is positive but percentage is unknown, code XX9.




NAACCR #3826


Code Description
000 ER negative, or stated as less than 1%
001-100 1-100 percent
R10 Stated as 1-10%
R20 Stated as 11-20%
R30 Stated as 21-30%
R40 Stated as 31-40%
R50 Stated as 41-50%
R60 Stated as 51-60%
R70 Stated as 61-70%
R80 Stated as 71-80%
R90 Stated as 81-90%
R99 Stated as 91-100%
XX7 Test done, results not in chart
XX8 Not applicable: Information not collected for this case (If this item is required by your standard setter, use of code XX8 will result in an edit error.)
XX9 Not documented in medical record ER (Estrogen Receptor) Percent Positive or Range not assessed or unknown if assessed