23,524 codes
Non-billable / header codes
Category and subcategory headers that need more characters before they can be reported. Source: ICD-10-CM FY2027.
Chapter 6: Diseases of the nervous system
- G00Bacterial meningitis, not elsewhere classified
- G03Meningitis due to other and unspecified causes
- G04Encephalitis, myelitis and encephalomyelitis
- G04.0Acute disseminated encephalitis and encephalomyelitis (ADEM)
- G04.3Acute necrotizing hemorrhagic encephalopathy
- G04.8Other encephalitis, myelitis and encephalomyelitis
- G04.9Encephalitis, myelitis and encephalomyelitis, unspecified
- G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
- G06Intracranial and intraspinal abscess and granuloma
- G11Hereditary ataxia
- G11.1Early-onset cerebellar ataxia
- G12Spinal muscular atrophy and related syndromes
- G12.2Motor neuron disease
- G13Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
- G20Parkinson's disease
- G20.AParkinson's disease without dyskinesia
- G20.BParkinson's disease with dyskinesia
- G21Secondary parkinsonism
- G21.1Other drug-induced secondary parkinsonism
- G23Other degenerative diseases of basal ganglia
- G24Dystonia
- G24.0Drug induced dystonia
- G25Other extrapyramidal and movement disorders
- G25.6Drug induced tics and other tics of organic origin
- G25.7Other and unspecified drug induced movement disorders
- G25.8Other specified extrapyramidal and movement disorders
- G30Alzheimer's disease
- G31Other degenerative diseases of nervous system, not elsewhere classified
- G31.0Frontotemporal dementia
- G31.8Other specified degenerative diseases of nervous system
- G32Other degenerative disorders of nervous system in diseases classified elsewhere
- G32.8Other specified degenerative disorders of nervous system in diseases classified elsewhere
- G35Multiple sclerosis
- G35.BPrimary progressive multiple sclerosis
- G35.CSecondary progressive multiple sclerosis
- G36Other acute disseminated demyelination
- G37Other demyelinating diseases of central nervous system
- G37.8Other specified demyelinating diseases of central nervous system
- G40Epilepsy and recurrent seizures
- G40.0Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
- G40.00Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable
- G40.01Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable
- G40.1Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
- G40.10Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable
- G40.11Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable
- G40.2Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
- G40.20Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable
- G40.21Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable
- G40.3Generalized idiopathic epilepsy and epileptic syndromes
- G40.30Generalized idiopathic epilepsy and epileptic syndromes, not intractable
- G40.31Generalized idiopathic epilepsy and epileptic syndromes, intractable
- G40.4Other generalized epilepsy and epileptic syndromes
- G40.40Other generalized epilepsy and epileptic syndromes, not intractable
- G40.41Other generalized epilepsy and epileptic syndromes, intractable
- G40.5Epileptic seizures related to external causes
- G40.50Epileptic seizures related to external causes, not intractable
- G40.8Other epilepsy and recurrent seizures
- G40.80Other epilepsy
- G40.81Lennox-Gastaut syndrome
- G40.82Epileptic spasms
- G40.83Dravet syndrome
- G40.84KCNQ2-related epilepsy
- G40.9Epilepsy, unspecified
- G40.90Epilepsy, unspecified, not intractable
- G40.91Epilepsy, unspecified, intractable
- G40.AAbsence epileptic syndrome
- G40.A0Absence epileptic syndrome, not intractable
- G40.A1Absence epileptic syndrome, intractable
- G40.BJuvenile myoclonic epilepsy [impulsive petit mal]
- G40.B0Juvenile myoclonic epilepsy, not intractable
- G40.B1Juvenile myoclonic epilepsy, intractable
- G40.CLafora progressive myoclonus epilepsy
- G40.C0Lafora progressive myoclonus epilepsy, not intractable
- G40.C1Lafora progressive myoclonus epilepsy, intractable
- G43Migraine
- G43.0Migraine without aura
- G43.00Migraine without aura, not intractable
- G43.01Migraine without aura, intractable
- G43.1Migraine with aura
- G43.10Migraine with aura, not intractable
- G43.11Migraine with aura, intractable
- G43.4Hemiplegic migraine
- G43.40Hemiplegic migraine, not intractable
- G43.41Hemiplegic migraine, intractable
- G43.5Persistent migraine aura without cerebral infarction
- G43.50Persistent migraine aura without cerebral infarction, not intractable
- G43.51Persistent migraine aura without cerebral infarction, intractable
- G43.6Persistent migraine aura with cerebral infarction
- G43.60Persistent migraine aura with cerebral infarction, not intractable
- G43.61Persistent migraine aura with cerebral infarction, intractable
- G43.7Chronic migraine without aura
- G43.70Chronic migraine without aura, not intractable
- G43.71Chronic migraine without aura, intractable
- G43.8Other migraine
- G43.80Other migraine, not intractable
- G43.81Other migraine, intractable
- G43.82Menstrual migraine, not intractable
- G43.83Menstrual migraine, intractable
- G43.9Migraine, unspecified
- G43.90Migraine, unspecified, not intractable
- G43.91Migraine, unspecified, intractable
- G43.ACyclical vomiting
- G43.BOphthalmoplegic migraine
- G43.CPeriodic headache syndromes in child or adult
- G43.DAbdominal migraine
- G43.EChronic migraine with aura
- G43.E0Chronic migraine with aura, not intractable
- G43.E1Chronic migraine with aura, intractable
- G44Other headache syndromes
- G44.0Cluster headaches and other trigeminal autonomic cephalgias (TAC)
- G44.00Cluster headache syndrome, unspecified
- G44.01Episodic cluster headache
- G44.02Chronic cluster headache
- G44.03Episodic paroxysmal hemicrania
- G44.04Chronic paroxysmal hemicrania
- G44.05Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)
- G44.09Other trigeminal autonomic cephalgias (TAC)
- G44.2Tension-type headache
- G44.20Tension-type headache, unspecified
- G44.21Episodic tension-type headache
- G44.22Chronic tension-type headache
- G44.3Post-traumatic headache
- G44.30Post-traumatic headache, unspecified
- G44.31Acute post-traumatic headache
- G44.32Chronic post-traumatic headache
- G44.4Drug-induced headache, not elsewhere classified
- G44.5Complicated headache syndromes
- G44.8Other specified headache syndromes
- G45Transient cerebral ischemic attacks and related syndromes
- G46Vascular syndromes of brain in cerebrovascular diseases
- G47Sleep disorders
- G47.0Insomnia
- G47.1Hypersomnia
- G47.2Circadian rhythm sleep disorders
- G47.3Sleep apnea
- G47.4Narcolepsy and cataplexy
- G47.41Narcolepsy
- G47.42Narcolepsy in conditions classified elsewhere
- G47.5Parasomnia
- G47.6Sleep related movement disorders
- G50Disorders of trigeminal nerve
- G51Facial nerve disorders
- G51.3Clonic hemifacial spasm
- G52Disorders of other cranial nerves
- G54Nerve root and plexus disorders
- G56Mononeuropathies of upper limb
- G56.0Carpal tunnel syndrome
- G56.1Other lesions of median nerve
- G56.2Lesion of ulnar nerve
- G56.3Lesion of radial nerve
- G56.4Causalgia of upper limb
- G56.8Other specified mononeuropathies of upper limb
- G56.9Unspecified mononeuropathy of upper limb
- G57Mononeuropathies of lower limb
- G57.0Lesion of sciatic nerve
- G57.1Meralgia paresthetica
- G57.2Lesion of femoral nerve
- G57.3Lesion of lateral popliteal nerve
- G57.4Lesion of medial popliteal nerve
- G57.5Tarsal tunnel syndrome
- G57.6Lesion of plantar nerve
- G57.7Causalgia of lower limb
- G57.8Other specified mononeuropathies of lower limb
- G57.9Unspecified mononeuropathy of lower limb
- G58Other mononeuropathies
- G60Hereditary and idiopathic neuropathy
- G61Inflammatory polyneuropathy
- G61.8Other inflammatory polyneuropathies
- G62Other and unspecified polyneuropathies
- G62.8Other specified polyneuropathies
- G65Sequelae of inflammatory and toxic polyneuropathies
- G70Myasthenia gravis and other myoneural disorders
- G70.0Myasthenia gravis
- G70.8Other specified myoneural disorders
- G71Primary disorders of muscles
- G71.0Muscular dystrophy
- G71.03Limb girdle muscular dystrophies
- G71.034Limb girdle muscular dystrophy due to sarcoglycan dysfunction
- G71.1Myotonic disorders
- G71.2Congenital myopathies
- G71.22Centronuclear myopathy
- G72Other and unspecified myopathies
- G72.4Inflammatory and immune myopathies, not elsewhere classified
- G72.8Other specified myopathies
- G73Disorders of myoneural junction and muscle in diseases classified elsewhere
- G80Cerebral palsy
- G81Hemiplegia and hemiparesis
- G81.0Flaccid hemiplegia
- G81.1Spastic hemiplegia
- G81.9Hemiplegia, unspecified
- G82Paraplegia (paraparesis) and quadriplegia (quadriparesis)
- G82.2Paraplegia
- G82.5Quadriplegia
- G83Other paralytic syndromes
- G83.1Monoplegia of lower limb
- G83.2Monoplegia of upper limb
- G83.3Monoplegia, unspecified
- G83.8Other specified paralytic syndromes
- G89Pain, not elsewhere classified
- G89.1Acute pain, not elsewhere classified
- G89.2Chronic pain, not elsewhere classified
- G90Disorders of autonomic nervous system
- G90.0Idiopathic peripheral autonomic neuropathy
- G90.5Complex regional pain syndrome I (CRPS I)
- G90.51Complex regional pain syndrome I of upper limb
- G90.52Complex regional pain syndrome I of lower limb
- G90.8Other disorders of autonomic nervous system
- G91Hydrocephalus
- G92Toxic encephalopathy
- G92.0Immune effector cell-associated neurotoxicity syndrome
- G93Other disorders of brain
- G93.3Postviral and related fatigue syndromes
- G93.4Other and unspecified encephalopathy
- G93.8Other specified disorders of brain
- G95Other and unspecified diseases of spinal cord
- G95.1Vascular myelopathies
- G95.2Other and unspecified cord compression
- G95.8Other specified diseases of spinal cord
- G96Other disorders of central nervous system
- G96.0Cerebrospinal fluid leak
- G96.1Disorders of meninges, not elsewhere classified
- G96.19Other disorders of meninges, not elsewhere classified
- G96.8Other specified disorders of central nervous system
- G96.81Intracranial hypotension
- G97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified
- G97.3Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a procedure
- G97.4Accidental puncture and laceration of a nervous system organ or structure during a procedure
- G97.5Postprocedural hemorrhage of a nervous system organ or structure following a procedure
- G97.6Postprocedural hematoma and seroma of a nervous system organ or structure following a procedure
- G97.8Other intraoperative and postprocedural complications and disorders of nervous system
- G98Other disorders of nervous system not elsewhere classified
- G99Other disorders of nervous system in diseases classified elsewhere