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Table 1 Counts of dyskinesia according to ICD-9 classification

From: Tardive and spontaneous dyskinesia incidence in the general population

ICD-9 codes Description No. % No.a %a
  Tardive dyskinesia – drug related …     
333.81   Blepharospasm 11 32.4 8 32.0
333.82/333.85   Orofacial or subacute dyskinesia 11 32.4 8 32.0
333.83   Spasmodic torticollis 10 29.4 7 28.0
333.89   Other 2 5.8 2 8.0
   34   25  
  Spontaneous dyskinesia – non-drug related …     
333.81   Blepharospasm 105 45.8 67 45.6
333.82   Orofacial or subacute dyskinesia 34 14.8 26 17.7
333.83   Spasmodic torticollis 77 33.6 48 32.6
333.84   Organic writers’ cramp 3 1.3 2 1.4
333.89   Other 10 4.4 4 2.7
   229   147  
  1. Source: Deseret Mutual Benefit Administrators, 2001–2010.
  2. aTwo or more diagnoses within a 12 month time period.