CA-125 (Carbohydrate Antigen 125) Pretreatment Interpretation


**Note 1:** Physician statement of CA-125 pretreatment interpretation can be used to code this data item when no other information is available. **Note 2:** Carbohydrate Antigen 125 (CA-125), also known as cancer antigen 125, mucin 16, or MUC16, is a protein which in humans is encoded by the MUC16 gene. CA-125 is a tumor marker or biomarker that may be elevated in the blood of some patients with ovarian cancer. **Note 3:** Record only the blood or serum CA-125 interpretation for this data item. Do not record CA-125 test results based on fluid from the chest or abdominal cavity. **Note 4:** Record the CA-125 status prior to treatment. **Note 5:** Normal values may vary with patient age and from lab to lab. The typical human reference ranges are 0 to less than or equal 35 units per milliliter (U/mL). This is equivalent to kU/L. **Note 6:** Code 9 if there is no statement that the CA-125 is positive/elevated, negative/normal, and the lab value with its normal range (from which you can determine interpretation) is not documented.




NAACCR #3818


Code Description
0 Negative/normal; within normal limits
1 Positive/elevated
2 Stated as borderline; undetermined whether positive or negative
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 CA-125 not assessed or unknown if assessed