ICD-9-CM 333.2 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 333.2 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
A sudden, brief, strong contraction of a muscle or group of muscles that cannot be controlled
A sudden, involuntary contraction of a muscle or group of muscles; these movements may develop as a symptom of a number of neurological diseases including epilepsy, parkinson's disease, alzheimer's disease, or creutzfeldt-jacob disease
Involuntary shock-like contractions, irregular in rhythm and amplitude, followed by relaxation, of a muscle or a group of muscles. This condition may be a feature of some central nervous system diseases; (e.g., epilepsy, myoclonic). Nocturnal myoclonus is the principal feature of the nocturnal myoclonus syndrome. (from Adams et al., Principles of Neurology, 6th ed, pp102-3)
Shock-like contraction of a portion of a muscle, an entire muscle, or a group of muscles; may be part of a disease process or a normal physiological response