Acute posthemorrhagic anemia

This code signifies a sudden and severe decrease in red blood cell mass or hemoglobin concentration resulting from significant blood loss. It represents an acute anemic state directly attributable to hemorrhage, which can be internal or external. The body's compensatory mechanisms are overwhelmed by the rapid blood volume depletion.

Apply this code when documentation clearly indicates anemia developing acutely following a hemorrhagic event. This includes scenarios such as gastrointestinal bleeding, traumatic injury with significant blood loss, or postpartum hemorrhage. Supporting documentation should specify the acute nature of the anemia and its direct causal link to the hemorrhage.

• Ensure the documentation specifies "acute" anemia and a clear link to a recent hemorrhage.
• Do not use for chronic blood loss anemia; consider codes from the 280.0-280.9 series for those cases.
• Always code the underlying cause of the hemorrhage first, if known and applicable, followed by this code.