Site-Specific Factor 4
CD4 Cell Count
Notes
**Note 1:** The CD4 cell count is used to monitor how well the immune system is working in a patient who is Human Immunodeficiency Virus (HIV) positive. A blood test measures the number of CD4 T-cells in each microliter (ul) of blood. The measurement may also be in CD4 cells per cubic millimeter of blood. One microliter (ul) is equivalent to 1 cubic millimeter of fluid. A low CD4 count (less than 200) indicates a weakened immune system. For Kaposi Sarcoma patients, a CD4 count lower than 200 is a poor risk factor. **Note 2:** Record the CD4 count at the time of the Kaposi Sarcoma diagnosis as documented in the patient record. If the CD4+ count is 980 or greater use code 980. If the test is done but the actual value is not available or not stated, use code 997. **Note 3:** If the patient is HIV negative, use code 987. **Note 4:** Record the actual value of the CD4 count as documented in the patient record. If the actual CD4+ count is 980 or greater, use code 980.Default
988NAACCR Item
NAACCR #2910| Code | Description |
|---|---|
| 001-979 | CD4 count 001-979/cubic millimeter or microliter (ul) of blood (Exact count of CD4 cells) |
| 980 | CD4 count 980 or greater/cubic millimeter or microliter (ul) of blood |
| 987 | Not applicable: Patient is HIV negative |
| 988 | Not applicable: Information not collected for this case |
| 990 | CD4 count less than 200, NOS CD4 count stated to be low CD4 count stated to be poor risk |
| 991 | CD4 count greater than or equal to 200, NOS CD4 count stated to be normal CD4 count stated to good risk |
| 997 | Test ordered, results not in chart |
| 998 | Test not done (test not ordered and not performed) |
| 999 | Unknown or no information Not documented in patient record |