Human immunodef virus disease comp preg, second trimester

This code signifies a pregnant patient in her second trimester who has a confirmed diagnosis of human immunodeficiency virus (HIV) disease. It indicates that the HIV infection is considered a complication impacting the current pregnancy.

Apply this code when a pregnant patient with documented HIV disease is seen during the second trimester (weeks 14 through 27+6 days of gestation). Documentation must clearly state the patient's HIV status and the gestational age or trimester of pregnancy.

• Always sequence this code as a secondary diagnosis, following the primary obstetric code (e.g., O99.89 for other specified diseases and conditions complicating pregnancy).
• Do not use this code if the patient is HIV positive but asymptomatic and the HIV is not considered to be complicating the pregnancy; instead, use Z21.
• Ensure the medical record specifies "second trimester" or provides sufficient gestational age information to confirm the second trimester.