D57.452

HCC Category Mapping

What This Code Means

A combination blood disorder with sickle-cell and thalassemia beta-plus causing splenic sequestration, where blood becomes trapped in the spleen leading to anemia and spleen enlargement.

Coding Tips

• •Document evidence of splenic sequestration such as splenomegaly, acute anemia, reticulocytosis, and hemoglobin drop
• •This is a medical emergency requiring possible transfusion; ensure acute presentation is clearly documented

Clinical Significance

Splenic sequestration in sickle-cell thalassemia beta plus is notable because beta-plus patients are more likely to retain splenic function into adulthood compared to Hemoglobin SS or beta-zero patients, maintaining the risk of this potentially fatal complication throughout life. The preserved spleen in beta-plus patients means splenic sequestration crises can occur at any age, unlike Hemoglobin SS where autosplenectomy typically occurs by age 5-8.

Documentation Requirements

• ✓Documentation must confirm sickle-cell thalassemia beta plus genotype and acute splenic sequestration with rapid splenic enlargement and hemoglobin decline.
• ✓Record splenic size, hemoglobin trend, reticulocyte count, platelet count, treatment, and hemodynamic status.
• ✓Document splenic function status and note the lifelong risk in this genotype.
• ✓Record whether splenectomy is recommended.

Commonly Confused Codes