Inj/poisn/oth conseq of external causes comp preg, third tri

This code signifies any injury, poisoning, or other adverse health consequence resulting from an external cause that occurs during the third trimester of a pregnancy. It indicates that the external factor is complicating the pregnancy, potentially impacting maternal or fetal well-being.

Apply this code when a pregnant patient in her third trimester presents with a condition directly attributable to an external cause, such as a fall, motor vehicle accident, adverse drug effect, or exposure to toxic substances. Documentation should clearly link the external event to the patient's current medical condition and confirm the third-trimester status.

• Always sequence this code as a secondary diagnosis, following the primary code for the specific injury, poisoning, or external cause.
• Ensure the medical record explicitly states the trimester of pregnancy to support the "third trimester" specificity.
• Do not use this code for conditions that are inherent complications of pregnancy itself, but rather for those caused by an external factor.