Huntington's disease
Chapter 6:Diseases of the nervous system
ICD-10 G10 is a billable code used to indicate a diagnosis of huntington's disease.
Huntington's disease (HD) is a hereditary neurodegenerative disorder characterized by progressive motor dysfunction, cognitive decline, and psychiatric symptoms. It is caused by an expansion of CAG repeats in the HTT gene located on chromosome 4, leading to the production of a toxic protein that gradually damages neurons in specific brain regions, particularly the basal ganglia and cortex. Symptoms typically manifest in mid-adulthood, although juvenile forms exist. Patients may experience chorea, dystonia, rigidity, and bradykinesia, alongside cognitive impairments such as memory loss and difficulty with executive functions. Psychiatric manifestations can include depression, anxiety, and personality changes. Diagnosis is primarily clinical, supported by family history and genetic testing for the HTT gene mutation. Management focuses on symptomatic treatment, as there is currently no cure for the disease. Multidisciplinary care involving neurologists, psychiatrists, and genetic counselors is essential for optimal patient support.
Detailed neurological assessments, including motor function evaluations and cognitive testing results.
Patients presenting with chorea, cognitive decline, or family history of Huntington's disease.
Ensure documentation reflects the genetic basis of the disease and any referrals to genetic counseling.
Thorough psychiatric evaluations, including assessments of mood, behavior, and cognitive function.
Patients exhibiting depression, anxiety, or personality changes related to Huntington's disease.
Document the interplay between neurological symptoms and psychiatric manifestations for accurate coding.
Used to assess cognitive decline in patients with Huntington's disease.
Document the rationale for testing and results.
Neurologists should ensure comprehensive cognitive assessments are included.
Huntington's disease is primarily caused by a genetic mutation in the HTT gene, leading to the production of a toxic protein that damages neurons.
