Chapter 6: Diseases of the nervous system
Code range G00-G99 - 68 categories
| Category | Description | Billable codes |
|---|---|---|
G00 | Bacterial meningitis, not elsewhere classified | 6 |
G01 | Meningitis in bacterial diseases classified elsewhere | 1 |
G02 | Meningitis in other infectious and parasitic diseases classified elsewhere | 1 |
G03 | Meningitis due to other and unspecified causes | 5 |
G04 | Encephalitis, myelitis and encephalomyelitis | 14 |
G05 | Encphlts, myelitis & encephalomyelitis in dis classd elswhr | 2 |
G06 | Intracranial and intraspinal abscess and granuloma | 3 |
G07 | Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere | 1 |
G08 | Intracranial and intraspinal phlebitis and thrombophlebitis | 1 |
G09 | Sequelae of inflammatory diseases of central nervous system | 1 |
G10 | Huntington's disease | 1 |
G11 | Hereditary ataxia | 11 |
G12 | Spinal muscular atrophy and related syndromes | 11 |
G13 | Systemic atrophies aff cnsl in diseases classd elswhr | 4 |
G14 | Postpolio syndrome | 1 |
G20 | Parkinson's disease | 5 |
G21 | Secondary parkinsonism | 8 |
G23 | Other degenerative diseases of basal ganglia | 6 |
G24 | Dystonia | 10 |
G25 | Other extrapyramidal and movement disorders | 16 |
G26 | Extrapyramidal and movement disorders in diseases classified elsewhere | 1 |
G30 | Alzheimer's disease | 4 |
G31 | Oth degenerative diseases of nervous system, NEC | 14 |
G32 | Oth degeneratv disord of nervous sys in dis classd elswhr | 3 |
G35 | Multiple sclerosis | 8 |
G36 | Other acute disseminated demyelination | 4 |
G37 | Other demyelinating diseases of central nervous system | 9 |
G40 | Epilepsy and recurrent seizures | 58 |
G43 | Migraine | 48 |
G44 | Other headache syndromes | 40 |
G45 | Transient cerebral ischemic attacks and related syndromes | 7 |
G46 | Vascular syndromes of brain in cerebrovascular diseases | 9 |
G47 | Sleep disorders | 43 |
G50 | Disorders of trigeminal nerve | 4 |
G51 | Facial nerve disorders | 10 |
G52 | Disorders of other cranial nerves | 7 |
G53 | Cranial nerve disorders in diseases classified elsewhere | 1 |
G54 | Nerve root and plexus disorders | 10 |
G55 | Nerve root and plexus compressions in diseases classified elsewhere | 1 |
G56 | Mononeuropathies of upper limb | 28 |
G57 | Mononeuropathies of lower limb | 40 |
G58 | Other mononeuropathies | 4 |
G59 | Mononeuropathy in diseases classified elsewhere | 1 |
G60 | Hereditary and idiopathic neuropathy | 6 |
G61 | Inflammatory polyneuropathy | 6 |
G62 | Other and unspecified polyneuropathies | 7 |
G63 | Polyneuropathy in diseases classified elsewhere | 1 |
G64 | Other disorders of peripheral nervous system | 1 |
G65 | Sequelae of inflammatory and toxic polyneuropathies | 3 |
G70 | Myasthenia gravis and other myoneural disorders | 8 |
G71 | Primary disorders of muscles | 28 |
G72 | Other and unspecified myopathies | 9 |
G73 | Disord of myoneural junction and muscle in dis classd elswhr | 3 |
G80 | Cerebral palsy | 7 |
G81 | Hemiplegia and hemiparesis | 15 |
G82 | Paraplegia (paraparesis) and quadriplegia (quadriparesis) | 8 |
G83 | Other paralytic syndromes | 24 |
G89 | Pain, not elsewhere classified | 10 |
G90 | Disorders of autonomic nervous system | 21 |
G91 | Hydrocephalus | 7 |
G92 | Toxic encephalopathy | 8 |
G93 | Other disorders of brain | 20 |
G94 | Other disorders of brain in diseases classified elsewhere | 1 |
G95 | Other and unspecified diseases of spinal cord | 8 |
G96 | Other disorders of central nervous system | 14 |
G97 | Intraop and postproc comp and disorders of nervous sys, NEC | 18 |
G98 | Other disorders of nervous system not elsewhere classified | 2 |
G99 | Oth disorders of nervous system in diseases classd elswhr | 3 |
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