2019 ICD-10-CM Diagnosis Code G90.9

Disorder of the autonomic nervous system, unspecified

    2016 2017 2018 2019 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 2019 edition of ICD-10-CM G90.9 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of G90.9 - other international versions of ICD-10 G90.9 may differ.
The following code(s) above G90.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G90.9:
  • G00-G99
    2019 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the nervous system
  • G90
    ICD-10-CM Diagnosis Code G90

    Disorders of autonomic nervous system

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • dysfunction of the autonomic nervous system due to alcohol (G31.2)
    Disorders of autonomic nervous system
Approximate Synonyms
  • Disorder of peripheral autonomic nervous system
  • Neuropathy (nerve damage), autonomic
  • Peripheral autonomic neuropathy
Clinical Information
  • 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.
ICD-10-CM G90.9 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 073 Cranial and peripheral nerve disorders with mcc
  • 074 Cranial and peripheral nerve disorders without mcc

Convert G90.9 to ICD-9-CM

Code History
  • 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

Diagnosis Index entries containing back-references to G90.9:
  • Degeneration, degenerative
    • nervous system G31.9
      ICD-10-CM Diagnosis Code G31.9

      Degenerative disease of nervous system, unspecified

        2016 2017 2018 2019 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 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 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 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 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 Billable/Specific Code
      Applicable To
      • Neuropathy NOS

ICD-10-CM Codes Adjacent To G90.9
G90.512 Complex regional pain syndrome I of left upper limb
G90.513 …… bilateral
G90.519 Complex regional pain syndrome I of unspecified upper limb
G90.52 Complex regional pain syndrome I of lower limb
G90.521 Complex regional pain syndrome I of right lower limb
G90.522 Complex regional pain syndrome I of left lower limb
G90.523 …… bilateral
G90.529 Complex regional pain syndrome I of unspecified lower limb
G90.59 Complex regional pain syndrome I of other specified site
G90.8 Other disorders of autonomic nervous system
G90.9 Disorder of the autonomic nervous system, unspecified
G91 Hydrocephalus
G91.0 Communicating hydrocephalus
G91.1 Obstructive hydrocephalus
G91.2 (Idiopathic) normal pressure hydrocephalus
G91.3 Post-traumatic hydrocephalus, unspecified
G91.4 Hydrocephalus in diseases classified elsewhere
G91.8 Other hydrocephalus
G91.9 Hydrocephalus, unspecified
G92 Toxic encephalopathy
G93 Other disorders of brain

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