Smoking (tobacco) complicating pregnancy, second trimester

This code indicates a pregnant patient in her second trimester who is actively smoking tobacco or has a history of tobacco use that is impacting the current pregnancy. It signifies that tobacco use is considered a complicating factor in the gestational period. This can encompass various adverse effects on both maternal and fetal health.

Apply this code when documentation explicitly states tobacco smoking as a complication during the second trimester of pregnancy. This includes current smokers or those whose recent smoking history is deemed clinically relevant to the pregnancy's progression. Supporting documentation should clearly link the smoking to a potential or actual complication.

• Always confirm the trimester of pregnancy documented before assigning this code.
• Do not use this code for passive smoke exposure; a separate code exists for that.
• Sequence this code as a secondary diagnosis following the primary obstetric code for the pregnancy.