Diseases of the resp sys comp pregnancy, unsp trimester

This code identifies a pre-existing or new respiratory system disease that complicates a pregnancy, without specifying the trimester. It encompasses conditions such as asthma, bronchitis, or pneumonia that adversely affect the pregnant patient or the pregnancy outcome. The respiratory condition is considered a complicating factor, not merely co-occurring.

Use this code when a pregnant patient presents with a respiratory system disease that is documented as complicating the pregnancy, and the specific trimester is not recorded or is unknown. This applies to situations where the respiratory illness requires additional monitoring or management due to the pregnancy. Documentation should clearly link the respiratory condition to the pregnancy.

• Always sequence this code as a secondary diagnosis, following a code from category O99.5- (Diseases of the respiratory system complicating pregnancy, childbirth and the puerperium).
• Avoid using this code if the specific trimester is documented; instead, choose a more specific code from O99.511, O99.512, or O99.513.
• Ensure the medical record explicitly states the respiratory condition is "complicating" the pregnancy, rather than just being present during pregnancy.