ICD-9-CM 334.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 334.9 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 heterogenous group of degenerative syndromes marked by progressive cerebellar dysfunction either in isolation or combined with other neurologic manifestations. Sporadic and inherited subtypes occur. Inheritance patterns include autosomal dominant, autosomal recessive, and x-linked
2015 ICD-9-CM Diagnosis Code 334.9 
cerebellar NEC 
locomotor system 
