Home > 2013 ICD-9-CM Diagnosis Codes > Diseases Of The Nervous System And Sense Organs 320-389 > Hereditary And Degenerative Diseases Of The Central Nervous System 330-337 > Anterior horn cell disease 335-
Specific code 2013 ICD-9-CM Diagnosis Code 335.21
Progressive muscular atrophy
  • Short description: Prog muscular atrophy.
  • ICD-9-CM 335.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 335.21 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).
  • You are viewing the 2013 version of ICD-9-CM 335.21.
  • More recent version(s) of ICD-9-CM 335.21: 2014 2015.
Convert to ICD-10-CM: 335.21 converts approximately to:
  • 2015/16 ICD-10-CM G12.21 Amyotrophic lateral sclerosis
Applies To
  • Duchenne-Aran muscular atrophy
  • Progressive muscular atrophy (pure)
ICD-9-CM Volume 2 Index entries containing back-references to 335.21:
  • Amyotrophia, amyotrophy, amyotrophic 728.2
    • spinal progressive 335.21
  • Atrophy, atrophic
    • Aran-Duchenne muscular 335.21
    • Cruveilhier's 335.21
    • Duchenne-Aran 335.21
  • Creeping
    • palsy 335.21
    • paralysis 335.21
  • Cruveilhier's disease 335.21
  • Disease, diseased - see also Syndrome
    • Cruveilhier's 335.21
    • wasting NEC 799.4
      • due to malnutrition 261
      • paralysis 335.21
  • Duchenne-Aran myelopathic, muscular atrophy (nonprogressive) (progressive) 335.21
  • Palsy (see also Paralysis) 344.9
    • creeping 335.21
    • wasting 335.21
  • Paralysis, paralytic (complete) (incomplete) 344.9
    • atrophic 356.9
      • infantile, acute (see also Poliomyelitis, with paralysis) 045.1
      • muscle NEC 355.9
      • progressive 335.21
      • spinal (acute) (see also Poliomyelitis, with paralysis) 045.1
    • creeping 335.21
    • muscular (atrophic) 359.9
      • progressive 335.21
    • wasting 335.21
  • Poliomyelitis (acute) (anterior) (epidemic) 045.9
    • chronic 335.21
  • Wasting
    • palsy, paralysis 335.21
 335.20 ICD9Data.com 335.22 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 335.21 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2013 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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