ICD-10-CM — Chapter 6

Diseases of the nervous system - Use for Pain (chronic, neoplasm related or postoperative), inflammatory diseases, cerebral palsy, and other disorders or diseases of the nervous system.

Tabular List

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Diseases of the nervous system

- Use for Pain (chronic, neoplasm related or postoperative), inflammatory diseases, cerebral palsy, and other disorders or diseases of the nervous system.

Excludes2

  • 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)
Expand All Chapter #6 contains the following ICD-10-CM sections:
  • G00 Bacterial meningitis, not elsewhere classified

  • G01 Meningitis in bacterial diseases classified elsewhere

  • G02 Meningitis in other infectious and parasitic diseases classified elsewhere

  • G03 Meningitis due to other and unspecified causes

  • G04 Encephalitis, myelitis and encephalomyelitis

  • G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

  • G06 Intracranial and intraspinal abscess and granuloma

  • G07 Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere

  • G08 Intracranial and intraspinal phlebitis and thrombophlebitis

    Inclusion term(s):

    • Septic embolism of intracranial or intraspinal venous sinuses and veins
    • Septic endophlebitis of intracranial or intraspinal venous sinuses and veins
    • Septic phlebitis of intracranial or intraspinal venous sinuses and veins
    • Septic thrombophlebitis of intracranial or intraspinal venous sinuses and veins
    • Septic thrombosis of intracranial or intraspinal venous sinuses and veins
  • G09 Sequelae of inflammatory diseases of central nervous system

    Note: Category G09 is to be used to indicate conditions whose primary classification is to G00-G08 as the cause of sequelae, themselves classifiable elsewhere. The 'sequelae' include conditions specified as residuals.

  • G10 Huntington's disease

    Inclusion term(s):

    • Huntington's chorea
    • Huntington's dementia
  • G11 Hereditary ataxia

  • G12 Spinal muscular atrophy and related syndromes

  • G13 Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere

  • G14 Postpolio syndrome

  • G20 Parkinson's disease

    Inclusion term(s):

    • Hemiparkinsonism
    • Idiopathic Parkinsonism or Parkinson's disease
    • Paralysis agitans
    • Parkinsonism or Parkinson's disease NOS
    • Primary Parkinsonism or Parkinson's disease
  • G21 Secondary parkinsonism

  • G23 Other degenerative diseases of basal ganglia

  • G24 Dystonia

  • G25 Other extrapyramidal and movement disorders

  • G26 Extrapyramidal and movement disorders in diseases classified elsewhere

  • G30 Alzheimer's disease

  • G31 Other degenerative diseases of nervous system, not elsewhere classified

  • G32 Other degenerative disorders of nervous system in diseases classified elsewhere

  • G35 Multiple sclerosis

    Inclusion term(s):

    • Disseminated multiple sclerosis
    • Generalized multiple sclerosis
    • Multiple sclerosis NOS
    • Multiple sclerosis of brain stem
    • Multiple sclerosis of cord
  • G36 Other acute disseminated demyelination

  • G37 Other demyelinating diseases of central nervous system

  • G40 Epilepsy and recurrent seizures

    Note: the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled

  • G43 Migraine

    Note: the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled

  • G44 Other headache syndromes

  • G45 Transient cerebral ischemic attacks and related syndromes

  • G46 Vascular syndromes of brain in cerebrovascular diseases

  • G47 Sleep disorders

Excludes1

  • current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
  • neuralgia NOS (M79.2)
  • neuritis NOS (M79.2)
  • peripheral neuritis in pregnancy (O26.82-)
  • radiculitis NOS (M54.1-)
  • G50 Disorders of trigeminal nerve

  • G51 Facial nerve disorders

  • G52 Disorders of other cranial nerves

  • G53 Cranial nerve disorders in diseases classified elsewhere

  • G54 Nerve root and plexus disorders

  • G55 Nerve root and plexus compressions in diseases classified elsewhere

  • G56 Mononeuropathies of upper limb

  • G57 Mononeuropathies of lower limb

  • G58 Other mononeuropathies

  • G59 Mononeuropathy in diseases classified elsewhere

Excludes1

  • G60 Hereditary and idiopathic neuropathy

  • G61 Inflammatory polyneuropathy

  • G62 Other and unspecified polyneuropathies

  • G63 Polyneuropathy in diseases classified elsewhere

  • G64 Other disorders of peripheral nervous system

    Inclusion term(s):

    • Disorder of peripheral nervous system NOS
  • G65 Sequelae of inflammatory and toxic polyneuropathies

  • G70 Myasthenia gravis and other myoneural disorders

  • G71 Primary disorders of muscles

  • G72 Other and unspecified myopathies

  • G73 Disorders of myoneural junction and muscle in diseases classified elsewhere

  • G80 Cerebral palsy

  • G81 Hemiplegia and hemiparesis

    Note: This category is to be used only when hemiplegia (complete)(incomplete) is reported without further specification, or is stated to be old or longstanding but of unspecified cause. The category is also for use in multiple coding to identify these types of hemiplegia resulting from any cause.

  • G82 Paraplegia (paraparesis) and quadriplegia (quadriparesis)

    Note: This category is to be used only when the listed conditions are reported without further specification, or are stated to be old or longstanding but of unspecified cause. The category is also for use in multiple coding to identify these conditions resulting from any cause

  • G83 Other paralytic syndromes

    Note: This category is to be used only when the listed conditions are reported without further specification, or are stated to be old or longstanding but of unspecified cause. The category is also for use in multiple coding to identify these conditions resulting from any cause.

  • G89 Pain, not elsewhere classified

  • G90 Disorders of autonomic nervous system

  • G91 Hydrocephalus

  • G92 Toxic encephalopathy

    Inclusion term(s):

    • Toxic encephalitis
    • Toxic metabolic encephalopathy
  • G93 Other disorders of brain

  • G94 Other disorders of brain in diseases classified elsewhere

  • G95 Other and unspecified diseases of spinal cord

  • G96 Other disorders of central nervous system

  • G97 Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified

  • G98 Other disorders of nervous system not elsewhere classified

  • G99 Other disorders of nervous system in diseases classified elsewhere