1. ICD-10-CM Codes
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2. G00-G99 Diseases of the nervous system
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3. G10-G14 Systemic atrophies primarily affecting the central nervous system
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4. G12- Spinal muscular atrophy and related syndromes
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5. 2021 ICD-10-CM Diagnosis Code G12.0

2021 ICD-10-CM Diagnosis Code G12.0

Infantile spinal muscular atrophy, type I [Werdnig-Hoffman]

2016 2017 2018 2019 2020 2021 Billable/Specific Code

• G12.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2021 edition of ICD-10-CM G12.0 became effective on October 1, 2020.
• This is the American ICD-10-CM version of G12.0 - other international versions of ICD-10 G12.0 may differ.

• Werdnig hoffmann disease

• The most severe form of spinal muscular atrophy. It is manifested in the first year of life with muscle weakness, poor muscle tone, and lack of motor development. The motor neuron death affects the major organ systems, particularly the respiratory system. Most patients die before the age of two secondary to pneumonia.

• 056 Degenerative nervous system disorders with mcc
• 057 Degenerative nervous system disorders without mcc

Convert G12.0 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change

• Atrophy, atrophic (of)
  • muscle, muscular (diffuse) (general) (idiopathic) (primary) M62.50
    ICD-10-CM Diagnosis Code M62.50

    Muscle wasting and atrophy, not elsewhere classified, unspecified site

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • progressive (bulbar) G12.21
      ICD-10-CM Diagnosis Code G12.21

      Amyotrophic lateral sclerosis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Adult Dx (15-124 years)
      • spinal G12.25
        ICD-10-CM Diagnosis Code G12.25

        Progressive spinal muscle atrophy

        2018 - New Code 2019 2020 2021 Billable/Specific Code
        • infantile G12.0
      • infantile G12.0 (spinal)
    • spinal G12.9
      ICD-10-CM Diagnosis Code G12.9

      Spinal muscular atrophy, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • infantile, type I G12.0 (Werdnig-Hoffmann)
    • infantile spinal G12.0
  • Werdnig-Hoffmann G12.0
• Disease, diseased - see also Syndrome
  • Werdnig-Hoffmann G12.0
• Syndrome - see also Disease
  • Hoffmann-Werdnig G12.0
  • Werdnig-Hoffman G12.0
• Werdnig-Hoffmann syndrome G12.0 (muscular atrophy)

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.