Diagnostic Services
ICD-9-CM to ICD-10-CM Codes
for Neurology
ICD-9
Code
Diagnoses
ICD-10
Code
277.5
Behavioral/Cognitive Syndromes
294.8
294.9
312.9
Amnestic Disorder
Cognitive Disorder
Behavior Disorder
Attention Deficit Hyperactivity
314.01
Disorder
Cerebral Degeneration
F04
F09
F91.9
294.20
331.0
331.11
331.19
331.81
780.09
F03.90
G30.9
G31.01
G31.09
G93.7
R41.0
Dementia
Alzheimer’s Disease
Pick’s Disease
Frontal Dementia
Reye’s Syndrome
Delirium
F90.9
Cerebral Lobe Dysfunction
780.93
784.3
784.69
784.69
Amnesia
Aphasia
Agnosia
Apraxia
R41.3
R47.01
R48.1
R48.2
Cerebrovascular Diseases
434.01
434.11
435.9
Thrombotic Stroke
Embolic Stroke
Transient Ischemic Attack
ICD-9
Code
I63.9
I63.9
G45.9
299.00 299.01
299.10 299.11
299.80 299.81
317
318.0 318.2
319
759.7
759.83
759.89
Cranial Nerve Disorders
352.9
Cranial Nerve Disorder
G52.9
Developmental Delay
270.0
270.1
271.0
Amino Acid Transport Disorder
Disorders Of Amino-Acid Transport,
Unspecified
Cystinuria
Cystinosis
Other Disorders Of Amino-Acid
Transport
Phenylketonuria [PKU]
Classical Phenylketonuria
Glycogenosis
Disorders Of Amino-Acid Transport,
Unspecified
Cystinuria
Cystinosis
Other Disorders Of Amino-Acid
Transport
759.9
783.42
Diagnoses
Mucopolysaccharidosis
Other Mucopolysaccharidoses
Mucopolysaccharidosis, Unspecified
E76.29
E76.3
Autistic Disorder
F84.0
Childhood Disintegrative Disorder
F84.3
Other Specified Pervasive
Developmental Disorders
(Asperger Syndrome)
Asperger's Syndrome
Other Pervasive Developmental
Disorders
Mild Intellectual Disabilities
Other Specified Intellectual
Disabilities
Moderate Intellectual Disabilities
Severe Intellectual Disabilities
Profound Intellectual Disabilities
Unspecified Intellectual Disabilities
Multiple Congenital Anomalies, So
Described
Fragile X Syndrome
Other Specified Anomalies
Other Specified Congenital
Malformation Syndromes, Not
Elsewhere Classified
Other specified congenital
malformations
Congenital Anomaly, Unspecified
Delayed Milestones
E72.00
Genetic Disorders
E72.01
E72.04
270.1
272.7
E72.09
272.7
E70.0
275.1
330.0
330.1
E72.00
E72.01
E72.04
E72.09
ICD-10
Code
Phenylketonuria
Neiman Pick Disease
Lysosomal Disorders (Gaucher, Fabry,
Pompe, Etc.)
Wilson’s Disease
Leukodystrophy
Tay Sach’s Disease
F84.5
F84.8
F70
F71
F72
F73
F79
Q89.7
Q99.2
Q87.89
Q89.8
Q89.9
R62.0
E70.1
E75.249
E83.01
E75.29
E75.02
Headache Disorders
307.81
339.00
346.00
Tension Headache
Cluster Headaches
Migraine Headache With Aura
G44.209
G44.009
G43.109
ICD-9-CM to ICD-10-CM Codes
for Neurology
ICD-9
Code
346.01
346.02
346.03
346.10
346.11
346.12
346.13
346.20
346.20
346.20
346.21
346.21
346.21
346.21
346.30
Diagnoses
Migraine With Aura, With Intractable
Migraine, So Stated, Without Mention
Of Status Migrainosus
Migraine With Aura, Without Mention
Of Intractable Migraine With Status
Migrainosus
Migraine With Aura, With Intractable
Migraine, So Stated, With Status
Migrainosus
Common Migraine
Migraine Without Aura, With
Intractable Migraine, So Stated,
Without Mention Of Status
Migrainosus
Migraine Without Aura, Without
Mention Of Intractable Migraine With
Status Migrainosus
Migraine Without Aura, With
Intractable Migraine, So Stated, With
Status Migrainosus
Variants Of Migraine, Not Elsewhere
Classified, Without Mention Of
Intractable Migraine, Without
Mention Of Status Migrainosus
Variants Of Migraine, Not Elsewhere
Classified, Without Mention Of
Intractable Migraine, Without
Mention Of Status Migrainosus
Variants Of Migraine, Not Elsewhere
Classified, Without Mention Of
Intractable Migraine, Without
Mention Of Status Migrainosus
Variants Of Migraine, Not Elsewhere
Classified, With Intractable Migraine,
So Stated, Without Mention Of
Status Migrainosus
Variants Of Migraine, Not Elsewhere
Classified, With Intractable Migraine,
So Stated, Without Mention Of
Status Migrainosus
Variants Of Migraine, Not Elsewhere
Classified, With Intractable Migraine,
So Stated, Without Mention Of
Status Migrainosus
Variants Of Migraine, Not Elsewhere
Classified, With Intractable Migraine,
So Stated, Without Mention Of
Status Migrainosus
Hemiplegic Migraine, Without
Mention Of Intractable Migraine
Without Mention Of Status
Migrainosus
ICD-10
Code
G43.119
G43.101
G43.111
ICD-9
Code
346.31
346.32
346.33
G43.009
G43.019
346.40
346.41
G43.001
346.42
G43.011
346.43
G43.A0
346.50
G43.B0
346.51
G43.D0
346.52
G43.A1
346.53
G43.B1
346.60
G43.C1
346.61
G43.D1
346.62
G43.409
346.63
Diagnoses
Hemiplegic Migraine, With
Intractable Migraine, So Stated,
Without Mention Of Status
Migrainosus
Hemiplegic Migraine, Without
Mention Of Intractable Migraine With
Status Migrainosus
Hemiplegic Migraine, With
Intractable Migraine, So Stated, With
Status Migrainosus
Menstrual Migraine, Without Mention
Of Intractable Migraine Without
Mention Of Status Migrainosus
Menstrual Migraine, With Intractable
Migraine, So Stated, Without Mention
Of Status Migrainosus
Menstrual Migraine, Without Mention
Of Intractable Migraine With Status
Migrainosus
Menstrual Migraine, With Intractable
Migraine, So Stated, With Status
Migrainosus
Persistent Migraine Aura Without
Cerebral Infarction, Without Mention
Of Intractable Migraine Without
Mention Of Status Migrainosus
Persistent Migraine Aura Without
Cerebral Infarction, With Intractable
Migraine, So Stated, Without Mention
Of Status Migrainosus
Persistent Migraine Aura Without
Cerebral Infarction, Without Mention
Of Intractable Migraine With Status
Migrainosus
Persistent Migraine Aura Without
Cerebral Infarction, With Intractable
Migraine, So Stated, With Status
Migrainosus
Persistent Migraine Aura With
Cerebral Infarction, Without Mention
Of Intractable Migraine Without
Mention Of Status Migrainosus
Persistent Migraine Aura With
Cerebral Infarction, With Intractable
Migraine, So Stated, Without Mention
Of Status Migrainosus
Persistent Migraine Aura With
Cerebral Infarction, Without Mention
Of Intractable Migraine With Status
Migrainosus
Persistent Migraine Aura With
Cerebral Infarction, With Intractable
Migraine, So Stated, With Status
Migrainosus
ICD-10
Code
G43.419
G43.401
G43.411
G43.829
G43.839
G43.821
G43.831
G43.509
G43.519
G43.501
G43.511
G43.609
G43.619
G43.601
G43.611
ICD-9
Code
346.70
346.71
346.72
346.73
346.80
346.90
348.2
784.0
784.0
784.40
784.59
Diagnoses
Chronic Migraine Without Aura,
Without Mention Of Intractable
Migraine Without Mention Of Status
Migrainosus
Chronic Migraine Without Aura,
With Intractable Migraine, So
Stated, Without Mention Of Status
Migrainosus
Chronic Migraine Without Aura,
Without Mention Of Intractable
Migraine With Status Migrainosus
Chronic Migraine Without Aura, With
Intractable Migraine, So Stated, With
Status Migrainosus
Ophthalmic Migraine
Migraine Headache, Unspecified
Idiopathic Intracranial Hypertension
Headache
Headache
Voice And Resonance Disorder,
Unspecified
Other Speech Disturbance
ICD-10
Code
Meningitis
Encephalitis
Myelitis
G43.709
G43.719
G43.701
G43.711
G43.809
G43.909
G93.2
R51
G44.1
R49.9
R47.02
G03.9
G04.90
G04.91
Injuries
852.20
853.00
Subdural Intracranial Hematoma
Traumatic Subdural Hemorrhage
Without Loss Of Consciousness,
Initial Encounter
Traumatic Subdural Hemorrhage
Without Loss Of Consciousness,
Subsequent Encounter
Traumatic Subdural Hemorrhage
Without Loss Of Consciousness,
Sequela
Traumatic Cerebral Hemorrhage
Unspecified focal traumatic brain
injury without loss of consciousness,
initial encounter
Unspecified Focal Traumatic
Brain Injury Without Loss Of
Consciousness, Subsequent
Encounter
Unspecified Focal Traumatic
Brain Injury Without Loss Of
Consciousness, Sequela
Diagnoses
Traumatic Brain Injury
Unspecified open wound of
unspecified part of head, initial
encounter
Unspecified Intracranial Injury
Without Loss Of Consciousness,
Subsequent Encounter
Unspecified Intracranial Injury
Without Loss Of Consciousness,
Sequela
854.10
Brain Injury With Intracranial Wound
Unspecified open wound of
unspecified part of head, initial
encounter
Unspecified Intracranial Injury
Without Loss Of Consciousness,
Subsequent Encounter
Unspecified Intracranial Injury
Without Loss Of Consciousness,
Sequela
Intracranial And Spinal Tumors
ICD-10
Code
854.00
Infections
322.9
323.9
323.9
ICD-9
Code
191.6
191.9
192.2
194.3
225.2
237.5
237.70
Medulloblastoma
Glioma
Malignant Neoplasm Of Spinal Cord
Pituitary Cancer
Meningioma
Brain Tumor
Neurofibromatosis
S06.9X0A
S06.9X0D
S06.9X0S
S06.9X0A
S06.9X0D
S06.9X0S
C71.6
C71.9
C72.0
C75.1
D32.9
D49.6
Q85.00
Motor Neuron Diseases
S06.5X0A
S06.5X0D
S06.5X0S
S06.300A
335.20
335.21
335.24
S06.300S
G12.21
G12.21
G12.29
Movement And Cerebellar Disorders
307.20
307.23
332.0
332.1
333.0
333.1
S06.300D
Amyotrophic Lateral Sclerosis
Progressive Muscular Atrophy
Primary Lateral Sclerosis
333.1
333.1
333.2
Tic Disorder
Tourette’s Syndrome
Parkinson’s Disease
Secondary Parkinsonism
Progressive Supernuclear Palsy
Essential And Other Specified Forms
Of Tremor
Essential And Other Specified Forms
Of Tremor
Essential And Other Specified Forms
Of Tremor
Myoclonus
F95.9
F95.2
G20
G21.9
G23.1
G25.0
G25.1
G25.2
G25.3
ICD-9
Code
Diagnoses
ICD-10
Code
ICD-9
Code
333.4
333.5
333.72
333.79
781.0
781.0
781.3
Huntington’s Disease
Hemiballismus
Acute Dystonia Due To Drugs
Acquired Torsion Dystonia
Spasms
Tremor
Ataxia
G10
G25.5
G24.02
G24.8
R25.2
R25.1
R27.0
356.3
Muscular Dystrophies And Other Myopathies
Congenital Hereditary Muscular
359.0
Dystrophy
359.1
Muscular Dystrophy
359.21
Myotonic Muscular Dystrophy
359.22
Myotonia Congenita
359.24
Drug-Induced Myotonia
359.3
Periodic Paralysis
359.4
Toxic Myopathy
Symptomatic Inflammatory
359.6
Myopathy In Diseases Classified
Elsewhere
359.71
Inclusion Body Myositis [IBM]
359.9
Myopathy, Unspecified
G71.2
G71.0
G71.11
G71.12
G71.14
G72.3
G72.2
G73.7
G72.41
G72.9
Other Neurological Disorders
324.1
334.0
334.1
336.1
336.9
336.9
340
341.0
342.90
343.9
741.90
Spinal Epidural Abscess
Friedreich’s Ataxia
Hereditary Spastic Paraplegia
Acute Infarction Of Spinal Cord
Myelopathy
Spinal Cord Compression
Multiple Sclerosis
Neuromyelitis Optica
Hemiplegia, Unspecified
Infantile Cerebral Palsy
Spina Bifida
G0.61
G11.1
G11.4
G95.11
G95.9
G95.20
G35
G36.0
G81.90
G80.9
Q05.9
Peripheral Nervous System Disorders
335.10
350.10
351.0
351.8
356.1
Spinal Muscular Atrophy
Trigeminal Neuralgia
Bell’s Palsy
Hemifacial Spasms
Peroneal Muscular Atrophy
G12.9
G50.0
G51.0
G51.8
G60.0
356.8
356.9
357
358.00
358.01
Diagnoses
Refsum’s Disease
Other Specified Idiopathic Peripheral
Neuropathy
Peripheral Neuropathy
Guillain-Barre Syndrome
Myasthenia Gravis
Myasthenia Gravis With Exacerbation
Seizure Disorders
Generalized Nonconvulsive Epilepsy
345.00
W/O Mention Of Intractable Epilepsy
Generalized Nonconvulsive Epilepsy
345.00
W/O Mention Of Intractable Epilepsy
Generalized Nonconvulsive Epilepsy
345.01
W/Intractable Epilepsy
Generalized Nonconvulsive Epilepsy
345.01
W/Intractable Epilepsy
345.10
Grand Mal Seizure
345.10
Myoclonic Seizures, Intractable
Generalized Convulsive Epilepsy With
345.11
Intractable Epilepsy
Generalized Convulsive Epilepsy With
345.11
Intractable Epilepsy
Grand Mal Status Epilepticus,
345.30
Intractable
345.40
Complex Partial Seizures
Localization-Related (Focal) (Partial)
Epilepsy And Epileptic Syndromes
345.40
With Complex Partial Seizures, W/O
Mention Of Intractable Epilepsy
Localization-Related (Focal) (Partial)
Epilepsy And Epileptic Syndromes
345.41
With Complex Partial Seizures W/
Intractable Epilepsy
Localization-Related (Focal) (Partial)
Epilepsy And Epileptic Syndromes
345.41
With Complex Partial Seizures W/
Intractable Epilepsy
345.50
Simple Partial Seizures
Localization-Related (Focal) (Partial)
Epilepsy And Epileptic Syndromes
345.51
With Simple Partial Seizures W/
Intractable Epilepsy
Localization-Related (Focal) (Partial)
Epilepsy And Epileptic Syndromes
345.51
With Simple Partial Seizures W/
Intractable Epilepsy
Infantile Spasms W/O Mention Of
345.60
Intractable Epilepsy
ICD-10
Code
G60.1
G60.8
G60.9
G61.0
G70.00
G70.01
G40.A01
G40.A09
G40.A11
G40.A19
G40.409
G40.419
G40.311
G40.319
G40.411
G40.209
G40.201
G40.211
G40.219
G40.109
G40.111
G40.119
G40.821
ICD-9
Code
345.60
345.61
345.61
345.70
345.71
345.80
345.80
345.80
345.80
345.81
345.81
345.81
345.81
345.90
345.91
345.91
779.0
780.31
780.32
780.33
Diagnoses
Infantile Spasms W/O Mention Of
Intractable Epilepsy
Infantile Spasms W/Intractable
Epilepsy
Infantile Spasms W/Intractable
Epilepsy
Epilepsy Partialis Continua W/O
Mention Of Intractable Epilepsy
Epilepsy Partialis Continua W/
Intractable Epilepsy
Other Forms Of Epilepsy And
Recurrent Seizures W/O Mention Of
Intractable Epilepsy
Other Forms Of Epilepsy And
Recurrent Seizures W/O Mention Of
Intractable Epilepsy
Other Forms Of Epilepsy And
Recurrent Seizures W/O Mention Of
Intractable Epilepsy
Other Forms Of Epilepsy And
Recurrent Seizures W/O Mention Of
Intractable Epilepsy
Other Forms Of Epilepsy And
Recurrent Seizures W/Intractable
Epilepsy
Other Forms Of Epilepsy And
Recurrent Seizures W/Intractable
Epilepsy
Other Forms Of Epilepsy And
Recurrent Seizures W/Intractable
Epilepsy
Other Forms Of Epilepsy And
Recurrent Seizures W/Intractable
Epilepsy
Epilepsy
Epilepsy, Unspecified With
Intractable Epilepsy
Epilepsy, Unspecified With
Intractable Epilepsy
Convulsions In Newborn
Febrile Seizures
Complex Febrile Seizure
Post-Traumatic Seizures
ICD-10
Code
ICD-9
Code
Diagnoses
ICD-10
Code
G40.822
327.40
327.51
333.94
347.00
347.01
780.52
Organic Parasomnia
Periodic Limb Movement Disorders
Restless Legs Syndrome
Narcolepsy
Narcolepsy With Cataplexy
Insomnia
G47.50
G47.61
G25.81
G47.419
G47.411
G47.00
G40.823
G40.824
G40.101
G40.119
G40.B01
G40.B09
G40.811
G40.812
G40.B11
G40.B19
G40.813
G40.814
G40.909
G40.911
G40.919
P90
R56.00
R56.01
R56.1
Sleep Disorders
327.20
327.21
327.23
327.30
Organic Sleep Apnea, Unspecified
Primary Central, Sleep Apnea
Obstructive Sleep Apnea (Adult)
(Pediatric)
Circadian Rhythm Sleep Disorder
G47.30
G47.31
G47.33
G47.20
Miscellaneous
Autoimmune Disease, Not Elsewhere
279.49
Classified
Depressive Disorder, Not Elsewhere
311
Classified
331.83
Mild Cognitive Impairment, So Stated
331.9
Cerebral Degeneration, Unspecified
Unspecified Extrapyramidal Disease
333.90
And Abnormal Movement Disorder
333.91
Stiff-Man Syndrome
334.8
Other Spinocerebellar Diseases
Unspecified Disorder Of Autonomic
334.9
Nervous System
335.19
Other Spinal Muscular Atrophy
335.29
Other Motor Neuron Disease
Demyelinating Disease Of Central
341.9
Nervous System, Unspecified
348.30
Encephalopathy, Unspecified
354.0
Carpal Tunnel Syndrome
355.9
Mononeuritis Of Unspecified Site
357.2
Polyneuropathy In Diabetes
357.3
Polyneuropathy In Malignant Disease
Chronic Inflammatory Demyelinating
357.81
Polyneuritis
Other Inflammatory And Toxic
357.89
Neuropathy
Myasthenia Gravis Without (Acute)
358.00
Exacerbation
368.2
Diplopia
368.9
Unspecified Visual Disturbance
374.30
Ptosis Of Eyelid, Unspecified
377.10
Optic Atrophy, Unspecified
377.16
Hereditary Optic Atrophy
377.30
Optic Neuritis, Unspecified
386.11
Benign Paroxysmal Positional Vertigo
723.1
Cervicalgia
724.2
Lumbago
D89.89
F32.9
G31.84
G31.9
G25.9
G25.82
G11.8
G90.9
G12.8
G12.29
G37.9
G93.40
G56.00
G58.9
E11.42
G63
G61.81
G62.89
G70.00
H53.2
H53.9
H02.409
H47.20
H47.22
H46.9
H81.13
M54.2
M54.5
Diagnostic Services
ICD-9
Code
Diagnoses
728.85
728.87
Muscular Wasting And Disuse
Atrophy, Not Elsewhere Classified
Spasm Of Muscle
Muscle Weakness (Generalized)
729.1
Myalgia And Myositis, Unspecified
728.2
729.2
729.5
729.82
729.89
Neuralgia, Neuritis, And Radiculitis,
Unspecified
Pain In Limb
Cramp Of Limb
Other Musculoskeletal Symptoms
Referable To Limbs
ICD-10
Code
ICD-9
Code
M62.50
780.2
780.93
781.2
784.51
787.20
M62.838
M62.81
M60.9;
M79.1
M79.2;
M54.10
M79.609
R25.2
R29.898
799.59
V17.89
V18.9
V5883
Diagnoses
Syncope And Collapse
Retrograde Amnesia
Abnormality Of Gait
Dysarthria
Dysphagia, Unspecified
Other Signs And Symptoms Involving
Cognition
Family History Of Other
Musculoskeletal Diseases
Family History Of Carrier Of Genetic
Disease
Encounter For Therapeutic Drug
Monitoring
ICD-10
Code
R55
R41.2
R26.9
R47.1
R13.10
R41.89
Z82.69
Z84.81
Z51.81
This list is intended to assist ordering physicians in providing ICD-10 Diagnostics codes as required by Medicare and other Insurers. It includes some commonly found
ICD-10 codes.
This list was compiled from the ICD-10-CM 2015 AMA manual. A current ICD-10-CM book should be used as a complete reference. The ultimate responsibility for correct
coding belongs to the ordering physician.
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