Unsp maternal infec/parastc disease comp preg, second tri

This code signifies a maternal infection or parasitic infestation of an unspecified nature that is adversely affecting a pregnancy during the second trimester. It indicates that while an infectious process is present and complicating the pregnancy, the specific pathogen or type of infection has not been definitively identified or documented.

Use this code when the medical record clearly states a maternal infectious or parasitic disease is complicating a second-trimester pregnancy, but the specific diagnosis of the infection is not documented. This applies when the physician notes "maternal infection complicating pregnancy, second trimester" without further specificity.

• Only use this code when the specific type of infection is truly unknown or undocumented.
• Always strive for a more specific infection code (e.g., O98.0-O98.8) if the documentation allows.
• Ensure the trimester (second) is explicitly stated or clearly inferable from the encounter date relative to the estimated due date.