This study will evaluate long-term safety and tolerability of valbenazine in participants with chorea associated with Huntington Disease (HD) who participated in Study NBI-98854-HD3006 (NCT04400331) in Canada.

Key Inclusion Criteria:

• Participated in Study NBI-98854-HD3006 and completing dosing through the Week 156 visit; or were actively participating, receiving study treatment, and completed an early termination visit Study NBI-98854-HD3006 at the time of the study closure at sites in Canada.
• Participants of childbearing potential must agree to use contraception consistently while participating in the study until 30 days after last dose of the study treatment.

Key Exclusion Criteria:

• Have difficulty swallowing
• Are currently pregnant or breastfeeding
• Have a medically significant abnormality, physical examination finding, clinically significant laboratory abnormality