Smoking (tobacco) complicating pregnancy, unsp trimester

This code signifies a pregnant patient who uses tobacco products, where the specific trimester of pregnancy is not documented. It indicates that tobacco use is considered a complicating factor in the current pregnancy, potentially impacting maternal or fetal health.

Apply this code when a pregnant patient's medical record clearly states current tobacco smoking but does not specify the trimester. Documentation such as "pregnant, smoker" or "tobacco use complicating pregnancy, trimester not specified" supports its use. This code is used when the provider identifies smoking as a relevant factor in the pregnancy management.

• Always sequence this code after the primary obstetric code (e.g., O09.- for supervision of normal pregnancy).
• Avoid using this code if the trimester is clearly documented; instead, use the trimester-specific O99.33- codes.
• Do not use this code for a history of tobacco use if the patient is no longer smoking during the current pregnancy.