In simple words: This code indicates that the amount of HIV virus in the blood is so low that it can't be measured by standard tests. This is a good sign and usually means the treatment is working well.

This code signifies that a patient's HIV RNA viral load is below the detectable limit of the quantification assay used. This generally indicates effective suppression of viral replication, often due to antiretroviral therapy.

Example 1: A patient with HIV who has been on antiretroviral therapy for several months gets routine bloodwork done. The lab results show their HIV RNA viral load is undetectable, so code 3502F is used., A patient newly diagnosed with HIV begins treatment. After several weeks, their viral load drops below detectable levels. The physician uses 3502F to track the treatment's success., A pregnant woman with HIV has regular viral load testing. During her third trimester, her viral load becomes undetectable, and the code 3502F is used as part of her prenatal care record.

Documentation should include the specific test used to determine the HIV RNA viral load, the result indicating a level below the limit of quantification, and the date of the test. Any relevant clinical findings or treatment decisions related to the viral load result should also be documented.