2013 ICD-9-CM Diagnosis Code 335.20
Amyotrophic lateral sclerosis
- progressive degeneration of the neurons that give rise to the corticospinal tract and of the motor cells of the brain stem and spinal cord, resulting in a deficit of upper and lower motor neurons.
- ICD-9-CM 335.20 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Applies To
Convert 335.20 to ICD-10-CM 
ICD-9-CM Volume 2 Index entries containing back-references to 335.20:
lateral sclerosis (syndrome) 
sclerosis (lateral) 
