Malignant neoplasm complicating pregnancy, second trimester

This code signifies the presence of a malignant neoplasm (cancer) in a pregnant patient during her second trimester. It indicates that the malignancy is actively complicating the pregnancy, requiring careful management of both conditions.

Apply this code when a pregnant patient, specifically between 14 weeks 0 days and 27 weeks 6 days gestation, has a confirmed diagnosis of cancer that is impacting the pregnancy's course or management. Documentation should clearly state the presence of the malignancy and the gestational age.

• Always sequence the code for the specific type of malignant neoplasm as a secondary diagnosis.
• Do not use this code if the malignancy is in remission or has been successfully treated prior to pregnancy and is not currently active.
• Confirm the trimester based on the documented gestational age; miscoding trimesters is a common error.