Hb-SS disease with cerebral vascular involvement

This code identifies a specific and severe form of sickle cell disease (Hb-SS, homozygous sickle cell anemia) complicated by cerebrovascular involvement. This means the patient has experienced or is experiencing neurological issues directly related to the sickle cell disease affecting the blood vessels in the brain, such as stroke or transient ischemic attack.

Apply this code when documentation clearly indicates a diagnosis of homozygous sickle cell disease (Hb-SS) and a co-occurring cerebrovascular event or condition directly attributable to the sickle cell pathology. This includes ischemic stroke, hemorrhagic stroke, or other cerebral vascular disorders in patients with confirmed Hb-SS. Documentation should specify both the sickle cell type and the neurological sequelae.

• Ensure the documentation explicitly states "Hb-SS disease" or "homozygous sickle cell anemia" and not another sickle cell variant.
• Confirm that the cerebrovascular involvement is a direct complication of the sickle cell disease, not an unrelated condition.
• Sequence this code as the primary diagnosis when the cerebrovascular involvement is the reason for the encounter, or as a secondary diagnosis when managing the overall sickle cell disease with this complication.