Carbohydrate Antigen 19-9 Pretreatment Lab Value
Description
Carbohydrate Antigen (CA) 19-9 Pretreatment Lab Value records the CA 19-9 value prior to treatment. CA 19-9 is a tumor marker that has prognostic significance for pancreatic cancer. CA 19-9 is a sialylated Lewis A blood group antigen that is commonly expressed and shed in pancreatic and hepatobiliary disease and in many malignancies, thus is not tumor specific. Preoperative CA 19-9 levels in pancreatic cancer patients correlate both with AJCC staging and resectability [NCCN Guidelines Version 3.2019 Pancreatic Adenocarcinoma].Notes
**Note 1:** **Effective years** * This SSDI is effective for diagnosis years 2021+ * For cases diagnosed 2018-2020, this SSDI must be blank **Note 2:** **Physician Statement** * Physician statement of CA 19-9 (Carbohydrate Antigen 19-9) Pretreatment Lab Value can be used to code this data item when no other information is available.| Code | Description |
|---|---|
| 0.0 | 0.0 Units/milliliter (U/ml) exactly |
| 0.1-9999.9 | 0.1-9999.9 U/ml (Exact value to nearest tenth in U/ml) |
| XXXX.1 | 10,000 U/ml or greater |
| XXXX.2 | Lab value not available, physician states CA 19-9 is negative/normal |
| XXXX.3 | Lab value not available, physician states CA 19-9 is positive/elevated/high |
| XXXX.7 | Test ordered, results not in chart |
| XXXX.8 | Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code XXXX.8 may result in an edit error.) |
| XXXX.9 | Not documented in medical record CA (Carbohydrate Antigen) 19-9 Pretreatment Lab Value not assessed or unknown if assessed |
| <BLANK> | Must be blank if diagnosis year is before 2021 |