Unsp maternal infec/parastc disease comp preg, first tri

This code signifies a maternal infectious or parasitic disease that is complicating a pregnancy during the first trimester, where the specific type of infection is not documented or is unknown. It indicates a systemic infection or parasitic infestation affecting the mother that has implications for the pregnancy.

Utilize this code when a pregnant patient in her first trimester presents with an infectious or parasitic condition, and the medical record does not specify the exact nature of the infection. Documentation should clearly state "unspecified infection complicating pregnancy, first trimester" or similar language indicating an infectious process without further detail.

• Always strive for a more specific infection code (e.g., O98.0-O98.8) if the documentation allows.
• Ensure the documentation explicitly states "first trimester" to support this code.
• Sequence this code as a secondary diagnosis when the primary reason for the encounter is related to the management of the pregnancy or the infection.