335.21 PROG MUSCULAR ATROPHY

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Code Information

Diagnosis Code: 335.21

Short Description: Prog muscular atrophy

Long Description: Progressive muscular atrophy

Code Classification:

Diseases of the nervous system (320–359)
- Hereditary and degenerative diseases of the central nervous system (330-337)
  - 335 Anterior horn cell disease
    - 335.21 Prog muscular atrophy

Code Version: 2015 ICD-9-CM

References to Index of Diseases and Injuries

The code 335.21 has the following ICD-9-CM references to the Index of Diseases and Injuries

Amyotrophia, amyotrophy, amyotrophic 728.2
- spinal progressive 335.21

Atrophy, atrophic
- Aran-Duchenne muscular 335.21
- Cruveilhier's 335.21
- Duchenne-Aran 335.21
- muscle, muscular 728.2
  - Duchenne-Aran 335.21
  - progressive (familial) (hereditary) (pure) 335.21
    - adult (spinal) 335.19
    - infantile (spinal) 335.0
    - juvenile (spinal) 335.11
    - spinal 335.10
      - adult 335.19
      - hereditary or familial 335.11
      - infantile 335.0
  - spinal (progressive) 335.10
    - Aran-Duchenne 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
  - 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
  - progressive 335.21
- creeping 335.21
- muscular (atrophic) 359.9
  - progressive 335.21
- progressive 335.21
  - atrophic 335.21
  - bulbar 335.22
  - general 094.1
  - hemifacial 349.89
  - infantile, acute (see also Poliomyelitis) 045.9
  - multiple 335.20
- wasting 335.21

Poliomyelitis (acute) (anterior) (epidemic) 045.9
- chronic 335.21

Wasting
- palsy, paralysis 335.21

Crosswalk Information

The code 335.21 converts into the following ICD-10 code(s):

ICD-9 Code		ICD-10 Code	ICD-10 Description
335.21		G12.21	Amyotrophic lateral sclerosis

This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code	ICD-9 Description
335.0	Werdnig-Hoffmann disease
335.10	Spinal muscular atrophy, unspecified
335.11	Kugelberg-Welander disease
335.19	Other spinal muscular atrophy
335.20	Amyotrophic lateral sclerosis
335.22	Progressive bulbar palsy
335.23	Pseudobulbar palsy
335.24	Primary lateral sclerosis
335.29	Other motor neuron disease
335.8	Other anterior horn cell diseases
335.9	Anterior horn cell disease, unspecified

This page was last updated on: 10/1/2014

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