Tuberculosis complicating pregnancy, third trimester

This code signifies the presence of active tuberculosis (TB) in a pregnant patient during her third trimester. It indicates that the TB infection is a complicating factor in the current pregnancy, potentially impacting both maternal and fetal health.

Apply this code when documentation confirms a diagnosis of tuberculosis in a pregnant patient who is currently in her third trimester. Supporting documentation should include a confirmed TB diagnosis (e.g., positive culture, imaging, clinical signs) and clear indication of the gestational stage.

• Always sequence this code as a secondary diagnosis following the appropriate code for the obstetric encounter (e.g., Z3A.xx for weeks of gestation).
• Ensure the medical record specifies "third trimester" to accurately assign this code; otherwise, a different trimester-specific code would be appropriate.
• Do not use this code for latent TB infection; only active tuberculosis complicating pregnancy should be reported here.