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333.2 MYOCLONUS


Code Information

Diagnosis Code: 333.2

Short Description: Myoclonus

Long Description: Myoclonus

Code Classification:

  • Diseases of the nervous system (320–359)
    • Hereditary and degenerative diseases of the central nervous system (330-337)
      • 333 Other extrapyramidal disease and abnormal movement disorders
        • 333.2 Myoclonus

Code Version: 2015 ICD-9-CM


References to Index of Diseases and Injuries

The code 333.2 has the following ICD-9-CM references to the Index of Diseases and Injuries
  • Convulsions (idiopathic) 780.39
    • myoclonic 333.2
  • Disease, diseased - see also Syndrome
    • Friedreich's
      • myoclonia 333.2
    • Lafora's 333.2
  • Friedreich's
    • disease 333.2
      • combined systemic 334.0
    • myoclonia 333.2
  • Jerks, myoclonic 333.2
  • Lafora's disease 333.2
  • Myoclonia (essential) 333.2
    • epileptica 345.1
    • Friedrich's 333.2
    • massive 333.2
  • Myoclonic
    • jerks 333.2
  • Myoclonus (familial essential) (multifocal) (simplex) 333.2
    • with epilepsy and with ragged red fibers� (MERRF syndrome) 277.87
    • facial 351.8
    • massive (infantile) 333.2
    • palatal 333.2
    • pharyngeal 333.2
  • Paramyoclonus multiplex 333.2

Crosswalk Information

The code 333.2 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
333.2 Right Arrow G25.3 Myoclonus
This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code ICD-9 Description
333.0 Other degenerative diseases of the basal ganglia
333.1 Essential and other specified forms of tremor
333.3 Tics of organic origin
333.4 Huntington's chorea
333.5 Other choreas
333.6 Genetic torsion dystonia
333.71 Athetoid cerebral palsy
333.72 Acute dystonia due to drugs
333.79 Other acquired torsion dystonia
333.81 Blepharospasm
333.82 Orofacial dyskinesia
333.83 Spasmodic torticollis
333.84 Organic writers' cramp
333.85 Subacute dyskinesia due to drugs
333.89 Other fragments of torsion dystonia
333.90 Unspecified extrapyramidal disease and abnormal movement disorder
333.91 Stiff-man syndrome
333.92 Neuroleptic malignant syndrome
333.93 Benign shuddering attacks
333.94 Restless legs syndrome (RLS)
333.99 Other extrapyramidal diseases and abnormal movement disorders

This page was last updated on: 10/1/2014

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