Thromboembolism in pregnancy, unspecified trimester

This code signifies the occurrence of a blood clot (thromboembolism) during a pregnancy, where the specific trimester of the pregnancy is not documented. It encompasses conditions such as deep vein thrombosis (DVT) or pulmonary embolism (PE) that develop while the patient is pregnant.

Use this code when a pregnant patient is diagnosed with a thromboembolic event, and the medical record does not specify which trimester the event occurred in. Documentation should clearly state the presence of a thromboembolism and the patient's pregnant status, but lack detail regarding the trimester.

• Always attempt to clarify the trimester from the provider if possible, as more specific codes exist (O88.211, O88.212, O88.213).
• This code is for the maternal condition; a separate code for the specific type of thromboembolism (e.g., I82.401 for acute DVT) should also be reported.
• Do not use this code if the thromboembolism occurred postpartum; refer to codes in the O88.22- series for postpartum thromboembolism.