Anemia complicating pregnancy, second trimester

This code identifies the presence of anemia in a pregnant patient during her second trimester. Anemia, characterized by a reduced number of red blood cells or hemoglobin, is considered a complication of the pregnancy in this context.

Assign this code when documentation specifies anemia occurring in a pregnant patient between the 14th and 27th week of gestation. This code requires a definitive diagnosis of anemia and a clear indication that it is complicating the current pregnancy.

• Always sequence this code as a secondary diagnosis, following the code for the obstetric condition (e..g., O09.- for supervision of high-risk pregnancy).
• Do not use this code for anemia that is unrelated to the pregnancy; instead, code the specific type of anemia (e.g., D50.9 for iron deficiency anemia) without an O-code.
• Ensure the medical record explicitly states the trimester of pregnancy to support the "second trimester" specificity.