ICD-10-CM > G00-G99 > G20-G26 > G25 > G25.8 G25.8 Other specified extrapyramidal and movement disorders Non-Billable/Non-Specific Codes G25.81Restless legs syndromeG25.82Stiff-man syndromeG25.83Benign shuddering attacksG25.89Other specified extrapyramidal and movement disorders