1. ICD-10-CM Codes
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2. G00-G99 Diseases of the nervous system
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3. G89-G99 Other disorders of the nervous system
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4. G90- Disorders of autonomic nervous system
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2020 ICD-10-CM Diagnosis Code G90.9

Disorder of the autonomic nervous system, unspecified

2016 2017 2018 2019 2020 Billable/Specific Code

• G90.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2020 edition of ICD-10-CM G90.9 became effective on October 1, 2019.
• This is the American ICD-10-CM version of G90.9 - other international versions of ICD-10 G90.9 may differ.

• Disorder of peripheral autonomic nervous system
• Neuropathy (nerve damage), autonomic
• Peripheral autonomic neuropathy

• Condition in which there is a deviation from or interruption of the normal structure or function of the parasympathetic or sympathetic divisions of the autonomic nervous system; autonomic dysfunction may be associated with hypothalamic diseases, brain stem disorders, spinal cord diseases, and peripheral nervous system diseases; manifestations include impairments of vegetative functions including the maintenance of blood pressure, heart rate, pupil function, sweating, reproductive and urinary physiology, and digestion.
• Diseases of the parasympathetic or sympathetic divisions of the autonomic nervous system; which has components located in the central nervous system and peripheral nervous system. Autonomic dysfunction may be associated with hypothalamic diseases; brain stem disorders; spinal cord diseases; and peripheral nervous system diseases. Manifestations include impairments of vegetative functions including the maintenance of blood pressure; heart rate; pupil function; sweating; reproductive and urinary physiology; and digestion.
• Your autonomic nervous system is the part of your nervous system that controls involuntary actions, such as the beating of your heart and the widening or narrowing of your blood vessels. When something goes wrong in this system, it can cause serious problems, including
  • blood pressure problems
  • heart problems
  • trouble with breathing and swallowing
  • erectile dysfunction in men
  autonomic nervous system disorders can occur alone or as the result of another disease, such as parkinson's disease, alcoholism and diabetes. Problems can affect either part of the system, as in complex regional pain syndromes, or all of the system. Some types are temporary, but many worsen over time. When they affect your breathing or heart function, these disorders can be life-threatening.some autonomic nervous system disorders get better when an underlying disease is treated. Often, however, there is no cure. In that case, the goal of treatment is to improve symptoms.

• 073 Cranial and peripheral nerve disorders with mcc
• 074 Cranial and peripheral nerve disorders without mcc

Convert G90.9 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

• Degeneration, degenerative
  • nervous system G31.9
    ICD-10-CM Diagnosis Code G31.9

    Degenerative disease of nervous system, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
    • autonomic G90.9
• Disease, diseased - see also Syndrome
  • nervous system G98.8
    ICD-10-CM Diagnosis Code G98.8

    Other disorders of nervous system

    2016 2017 2018 2019 2020 Billable/Specific Code

    Applicable To

    • Nervous system disorder NOS
    • autonomic G90.9
    • parasympathetic G90.9
    • sympathetic G90.9
    • vegetative G90.9
  • peripheral
    • autonomic nervous system G90.9
  • sympathetic nervous system G90.9
• Disorder (of) - see also Disease
  • autonomic nervous system G90.9
  • nerve G58.9
    ICD-10-CM Diagnosis Code G58.9

    Mononeuropathy, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
    • sympathetic G90.9
  • nervous system G98.8
    ICD-10-CM Diagnosis Code G98.8

    Other disorders of nervous system

    2016 2017 2018 2019 2020 Billable/Specific Code

    Applicable To

    • Nervous system disorder NOS
    • autonomic (peripheral) G90.9
    • parasympathetic G90.9
    • sympathetic G90.9
    • vegetative G90.9
• Disturbance(s) - see also Disease
  • sympathetic G90.9 (nerve)
• Neuropathy, neuropathic G62.9
  ICD-10-CM Diagnosis Code G62.9

  Polyneuropathy, unspecified

  2016 2017 2018 2019 2020 Billable/Specific Code

  Applicable To

  • Neuropathy NOS
  • peripheral (nerve) G62.9
    - see also Polyneuropathy
    ICD-10-CM Diagnosis Code G62.9

    Polyneuropathy, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code

    Applicable To

    • Neuropathy NOS
    • autonomic G90.9

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