Anemia complicating pregnancy, unspecified trimester

This code signifies the presence of anemia in a pregnant patient, where the anemia is considered a complication of the pregnancy itself. It indicates a general diagnosis of anemia without specifying the type or cause, and the trimester of pregnancy is not documented.

Apply this code when a pregnant patient is diagnosed with anemia, and the provider explicitly links the anemia to the pregnancy. This code is appropriate when the medical record does not specify the trimester of pregnancy or the specific type of anemia (e.g., iron deficiency anemia). Documentation should clearly state "anemia complicating pregnancy" or similar.

• Always sequence this code as a secondary diagnosis following the appropriate code for the obstetric condition (e.g., Z3A.xx for weeks of gestation).
• Avoid using this code if a more specific type of anemia (e.g., O99.02 for iron deficiency anemia complicating pregnancy) is documented.
• Query the provider for the specific type of anemia and the trimester if not documented, to allow for more precise coding.