Hb-SS disease with acute chest syndrome

This code signifies a severe complication of sickle cell anemia (Hb-SS disease) characterized by a new pulmonary infiltrate on chest X-ray, accompanied by symptoms such as fever, cough, tachypnea, or chest pain. Acute chest syndrome is a leading cause of morbidity and mortality in individuals with sickle cell disease, often triggered by infection, fat embolism, or infarction.

Apply this code when a patient with confirmed homozygous sickle cell disease (Hb-SS) presents with clinical and radiological evidence of acute chest syndrome. Documentation should clearly state the diagnosis of Hb-SS disease and explicitly mention the presence of acute chest syndrome, including its characteristic symptoms and findings.

• Always sequence this code as the primary diagnosis when acute chest syndrome is the reason for the encounter.
• Ensure documentation specifies "Hb-SS disease" and not other forms of sickle cell disease, as this code is specific to the homozygous variant.
• Code any underlying infections or other contributing factors to the acute chest syndrome as secondary diagnoses.