If a patient is asymptomatic and pregnant, which two codes should be reported?

The scenario presented describes an asymptomatic pregnant patient who is undergoing assessment for a specific condition. In this context, the correct coding necessitates capturing two important aspects: the pregnancy and the patient's HIV status.

The code O98.7 refers to a maternal diagnosis that indicates a pregnant woman is known to have a viral infection, specifically HIV. This code is used when the woman is pregnant and has tested positive for an HIV infection, regardless of symptoms.

Z21, on the other hand, is used when a patient is known to be HIV positive but asymptomatic. This is the appropriate code for someone who is HIV-positive without any current symptoms or relevant manifestations of the disease.

By combining O98.7 with Z21, the coding reflects both the pregnancy and the asymptomatic HIV status of the patient accurately, which is essential for effective clinical documentation and care.

The other combinations offered do not appropriately represent both the pregnancy and the asymptomatic status in a clinically relevant manner. Therefore, the correct choice not only identifies the presence of HIV during pregnancy but also acknowledges the lack of symptoms, aligning with proper coding guidelines.