Primary dystonia

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

Primary dystonias (primary torsion dystonias) are disorders where dystonia is the sole neurological manifestation. These disorders are slowly progressive and may be familial/genetic or sporadic in origin.

sections/codes in this section (8A02.0-8A02.0)

• Benign essential blepharospasm  (8A02.00)
• Other specified primary dystonia  (8A02.0Y)
• Primary dystonia, unspecified  (8A02.0Z)

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