ICD-9 to ICD-10 Conversion Commonly Used Neurologic Diagnosis 327.20 Organic sleep apnea, unspecified... 1 331.0 Alzheimer s disease...3 333.1 Essential and other specified forms of tremor...4 340 Multiple sclerosis...5 346.00 Migraine...6 356.0 Hereditary peripheral neuropathy...15 359.0 Congenital hereditary muscular dystrophy...16 386.11 Benign paroxysmal positional vertigo...18 780.2 Syncope and collapse...19 784.0 Headache...20
ICD-9 to ICD-10 conversion of organic sleep apnea, unspecified 327.20 Organic sleep apnea, unspecified G47.30 Sleep apnea, unspecified G47.31 Primary central sleep apnea G47.32 High altitude periodic breathing G47.33 Obstructive sleep apnea (adult) (pediatric) Code also any associated underlying condition when reporting codes from category G47 Code first underlying condition when reporting codes G47.36 and G47.37 G47.34 Idiopathic sleep related nonobstructive alveolar hypoventilation G47.35 Congenital central alveolar hypoventilation syndrome G47.36 Sleep related hypoventilation in conditions classified elsewhere G47.37 Central sleep apnea in conditions classified elsewhere G47.39 Other sleep apnea 327.21 Primary central sleep apnea G47.31 Primary central sleep apnea Code also any associated underlying condition when reporting codes from category G47 327.22 High altitude periodic breathing G47.32 High altitude periodic breathing Code also any associated underlying condition when reporting codes from category G47 327.23 Obstructive sleep apnea (adult) (pediatric) G47.33 Obstructive sleep apnea (adult) (pediatric) Code also any associated underlying condition when reporting codes from category G47 327.24 Idiopathic sleep related non-obstructive alveolar hypoventilation G47.34 Idiopathic sleep related nonobstructive alveolar hypoventilation Code also any associated underlying condition when reporting codes from category G47 327.25 Congenital central alveolar hypoventilation syndrome G47.35 Congenital central alveolar hypoventilation syndrome Code also any associated underlying condition when reporting codes from category G47 AMERICAN ACADEMY OF NEUROLOGY 1
ICD-9 to ICD-10 conversion of organic sleep apnea, unspecified 327.26 Sleep related hypoventilation/ hypoxemia in conditions classifiable elsewhere G47.36 leep related hypoventilation in conditions classified elsewhere Code also any associated underlying condition when reporting codes from category G47 Code first underlying condition when reporting codes G47.36 and G47.37 327.27 Central sleep apnea in conditions classified elsewhere G47.37 Central sleep apnea in conditions classified elsewhere Code also any associated underlying condition when reporting codes from category G47 Code first underlying condition when reporting codes G47.36 and G47.37 327.29 Other organic sleep apnea G47.39 Other sleep apnea G47.30 Sleep apnea, unspecified G47.31 Primary central sleep apnea G47.32 High altitude periodic breathing G47.33 Obstructive sleep apnea (adult) (pediatric) G47.34 Idiopathic sleep related nonobstructive alveolar hypoventilation G47.35 Congenital central alveolar hypoventilation syndrome G47.36 Sleep related hypoventilation in conditions classified elsewhere G47.37 Central sleep apnea in conditions classified elsewhere Code also any associated underlying condition when reporting codes from category G47 Code first underlying condition when reporting codes G47.36 and G47.37 AMERICAN ACADEMY OF NEUROLOGY 2
ICD-9 to ICD-10 conversion of alzheimer s disease 331.0 Alzheimer s disease G30.9 Alzheimer s disease, unspecified G30.0 Alzheimer s disease with early onset G30.1 Alzheimer s disease with late onset G30.8 Other Alzheimer s disease Use additional code to identify: delirium, if applicable (F05) dementia with behavioral disturbance (F02.81) dementia without behavioral disturbance (F02.80) when reporting category G30 AMERICAN ACADEMY OF NEUROLOGY 3
ICD-9 to ICD-10 conversion of essential and other specified forms of tremor 333.1 Essential and other specified forms of tremor G25.0 Essential tremor G25.1 Drug-induced tremor G25.2 Other specified forms of tremor reporting code G25.0 AMERICAN ACADEMY OF NEUROLOGY 4
ICD-9 to ICD-10 conversion of multiple sclerosis 340 Multiple sclerosis G35 Multiple sclerosis AMERICAN ACADEMY OF NEUROLOGY 5
ICD-9 to ICD-10 conversion of migraine 346.00 Migraine with aura, G43.109 Migraine with aura, not intractable, without status G43.119 Migraine with aura, Code also any associated seizure (G40.-, R56.9) when reporting codes from subcategory G43.1 346.01 Migraine with aura, with intractable G43.119 Migraine with aura, Code also any associated seizure (G40.-, R56.9) when reporting codes from subcategory G43.1 346.02 Migraine with aura, with G43.101 Migraine with aura, not G43.111 Migraine with aura, Code also any associated seizure (G40.-, R56.9) when reporting codes from subcategory G43.1 346.03 Migraine with aura, with intractable with G43.111 Migraine with aura, Code also any associated seizure (G40.-, R56.9) when reporting codes from subcategory G43.1 346.10 Migraine without aura, G43.009 Migraine without aura, not intractable, without status G43.019 Migraine without aura, 346.11 Migraine without aura, with intractable G43.019 without aura, 346.12 Migraine without aura, with G43.001 Migraine without aura, not intractable, with status G43.011 Migraine without aura, status AMERICAN ACADEMY OF NEUROLOGY 6
ICD-9 to ICD-10 conversion of migraine 346.13 Migraine without aura, with intractable with G43.011 Migraine without aura, 346.20 Variants of migraine, not elsewhere classified, without mention of intractable migraine without mention of status G43.809 Other migraine, not G43.A0 G43.B0 Cyclical vomiting, not intractable Ophthalmoplegic migraine, not intractable G43.819 Other migraine, G43.A1 G43.B1 Cyclical vomiting, intractable Ophthalmoplegic migraine, intractable G43.C0 G43.D0 Periodic headache syndromes in child or adult, not intractable Ophthalmoplegic migraine, not intractable G43.C1 G43.D1 Periodic headache syndromes in child or adult, intractable Abdominal migraine, intractable 346.21 Variants of migraine, not elsewhere classified, with, so stated, without mention of status G43.819 Other migraine, G43.A1 G43.B1 Cyclical vomiting, intractable Ophthalmoplegic migraine, intractable G43.C1 Periodic headache syndromes in child or adult, intractable G43.D1 Abdominal migraine, intractable 346.22 Variants of migraine, not elsewhere classified, with G43.801 Other migraine, not G43.811 Other migraine, 346.23 Variants of migraine, not elsewhere classified, with, so stated, with status G43.811 Other migraine, 346.30 Hemiplegic migraine, G43.409 Hemiplegic migraine, not intractable, without status G43.419 Hemiplegic migraine, AMERICAN ACADEMY OF NEUROLOGY 7
ICD-9 to ICD-10 conversion of migraine 346.31 Hemiplegic migraine, with intractable G43.419 Hemiplegic migraine, 346.32 Hemiplegic migraine, with G43.401 Hemiplegic migraine, not G43.411 Hemiplegic migraine, 346.33 Hemiplegic migraine, with intractable with G43.411 Hemiplegic migraine, 346.40 Menstrual migraine, G43.829 Menstrual migraine, not intractable, without status G43.839 Menstrual migraine, intractable, without 346.41 Menstrual migraine, with intractable G43.839 Menstrual migraine, 346.42 Menstrual migraine, with G43.821 Menstrual migraine, not G43.831 Menstrual migraine, status 346.43 Menstrual migraine, with intractable with G43.831 Menstrual migraine, 346.50 Persistent migraine infarction, without mention of intractable migraine without mention of status G43.509 Persistent migraine infarction, not G43.519 Persistent migraine infarction, intractable, without status 346.51 Persistent migraine infarction, with, so stated, without mention of G43.519 Persistent migraine infarction, intractable, without status AMERICAN ACADEMY OF NEUROLOGY 8
ICD-9 to ICD-10 conversion of migraine 346.52 Persistent migraine infarction, without mention of intractable migraine with status G43.501 Persistent migraine infarction, not G43.511 Persistent migraine infarction, intractable, with 346.53 Persistent migraine infarction, with, so stated, with status G43.511 Persistent migraine infarction, intractable, with status 346.60 Persistent migraine aura with cerebral infarction, G43.609 Persistent migraine aura with cerebral infarction, not G43.619 Persistent migraine aura with cerebral infarction, Code also the type of cerebral infarction (I63.-) when reporting codes from subcategory G43.6 346.61 Persistent migraine aura with cerebral infarction, with, so stated, without mention of G43.619 Persistent migraine aura with cerebral infarction, intractable, without status Code also the type of cerebral infarction (I63.-) when reporting codes from subcategory G43.6 346.62 Persistent migraine aura with cerebral infarction, without mention of intractable migraine with status G43.601 Persistent migraine aura with cerebral infarction, not G43.611 Persistent migraine aura with cerebral infarction, status Code also the type of cerebral infarction (I63.-) when reporting codes from subcategory G43.6 346.63 Persistent migraine aura with cerebral infarction, with intractable with G43.611 Persistent migraine aura with cerebral infarction, intractable, with status Code also the type of cerebral infarction (I63.-) when reporting codes from subcategory G43.6 346.70 Chronic migraine without aura, without mention of G43.709 Chronic migraine without aura, not G43.719 Chronic migraine without aura, AMERICAN ACADEMY OF NEUROLOGY 9
ICD-9 to ICD-10 conversion of migraine 346.71 Chronic migraine without aura, with, so stated, without mention of G43.719 Chronic migraine without aura, 346.72 Chronic migraine without aura, without mention of intractable migraine with status G43.701 Chronic migraine without aura, not G43.711 Chronic migraine without aura, intractable, with 346.73 Chronic migraine without aura, with, so stated, with status G43.711 Chronic migraine without aura, 346.80 Other forms of migraine, G43.809 Other migraine, not G43.819 Other migraine, 346.81 Other forms of migraine, with intractable G43.819 Other migraine, 346.82 Other forms of migraine, with G43.801 Other migraine, not G43.811 Other migraine, status 346.83 Other forms of migraine, with intractable with G43.811 Other migraine, AMERICAN ACADEMY OF NEUROLOGY 10
ICD-9 to ICD-10 conversion of migraine 346.90 Migraine, unspecified, G43.909 Migraine, unspecified, not G43.009 Migraine without aura, not G43.109 Migraine with aura, not G43.409 Hemiplegic migraine, not G43.509 Persistent migraine infarction, not Code also any associated seizure (G40.-, R56.9) when reporting codes from subcategory G43.1 Code also the type of cerebral infarction (I63.-) when reporting codes from subcategory G43.6 G43.609 Persistent migraine aura with cerebral infarction, not G43.709 Chronic migraine without aura, not intractable, without G43.B0 Ophthalmoplegic migraine, not intractable G43.D0 Ophthalmoplegic migraine, not intractable G43.809 Other migraine, not G43.829 Menstrual migraine, not AMERICAN ACADEMY OF NEUROLOGY 11
ICD-9 to ICD-10 conversion of migraine 346.91 Migraine, unspecified, with intractable G43.919 Migraine, unspecified, G43.019 Migraine without aura, G43.119 Migraine with aura, G43.419 Hemiplegic migraine, Code also any associated seizure (G40.-, R56.9) when reporting codes from subcategory G43.1 Code also the type of cerebral infarction (I63.-) when reporting codes from subcategory G43.6 G43.519 Persistent migraine infarction, intractable, without status G43.619 Persistent migraine aura with cerebral infarction, G43.719 Chronic migraine without aura, G43.B1 G43.D1 Ophthalmoplegic migraine, intractable Abdominal migraine, intractable G43.819 Other migraine, G43.839 Menstrual migraine, AMERICAN ACADEMY OF NEUROLOGY 12
ICD-9 to ICD-10 conversion of migraine 346.92 Migraine, unspecified, with G43.901 Migraine, unspecified, not G43.001 Migraine without aura, not G43.101 Migraine with aura, not G43.401 Hemiplegic migraine, not G43.501 Persistent migraine infarction, not status Code also any associated seizure (G40.-, R56.9) when reporting codes from subcategory G43.1 Code also the type of cerebral infarction (I63.-) when reporting codes from subcategory G43.6 G43.601 Persistent migraine aura with cerebral infarction, not G43.701 Chronic migraine without aura, not intractable, with G43.B0 Ophthalmoplegic migraine, not intractable G43.D0 Abdominal migraine, not intractable G43.801 Other migraine, not G43.821 Menstrual migraine, not AMERICAN ACADEMY OF NEUROLOGY 13
ICD-9 to ICD-10 conversion of migraine 346.93 Migraine, unspecified, with intractable with status G43.911 Migraine, unspecified, G43.011 Migraine without aura, status G43.111 Migraine with aura, status G43.411 Hemiplegic migraine, status G43.511 Persistent migraine infarction, intractable, with Use additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) when reporting codes from category G43 Code also any associated seizure (G40.-, R56.9) when reporting codes from subcategory G43.1 Code also the type of cerebral infarction (I63.-) when reporting codes from subcategory G43.6 G43.611 Persistent migraine aura with cerebral infarction, status G43.711 Chronic migraine without aura, G43.B1 Ophthalmoplegic migraine, intractable G43.D1 Abdominal migraine, intractable G43.811 Other migraine, status G43.831 Menstrual migraine, status AMERICAN ACADEMY OF NEUROLOGY 14
ICD-9 to ICD-10 conversion of hereditary peripheral neuropathy 356.0 Hereditary peripheral neuropathy G60.0 Hereditary motor and sensory neuropathy 356.1 Peroneal muscular atrophy G60.0 Hereditary motor and sensory neuropathy 356.2 Hereditary sensory neuropathy G60.0 Hereditary motor and sensory neuropathy 356.3 Refsum s disease G60.1 Refsum s disease 356.4 Idiopathic progressive polyneuropathy 356.8 Other specified idiopathic peripheral neuropathy 356.9 Unspecified hereditary and idiopathic peripheral neuropathy G60.3 Idiopathic progressive neuropathy G60.8 Other hereditary and idiopathic neuropathies G60.9 Hereditary and idiopathic neuropathy, unspecified G60.0 Hereditary motor and sensory neuropathy G60.1 Refsum s diseasew G60.2 Neuropathy in association with hereditary ataxia G60.3 Idiopathic progressive neuropathy G60.0 Hereditary motor and sensory neuropathy G60.1 Refsum s disease G60.2 Neuropathy in association with hereditary ataxia G60.3 Idiopathic progressive neuropathy G60.8 Other hereditary and idiopathic neuropathies AMERICAN ACADEMY OF NEUROLOGY 15
ICD-9 to ICD-10 conversion of congenital hereditary muscular dystrophy 359.0 Congenital hereditary muscular dystrophy 359.1 Hereditary progressive muscular dystrophy G71.2 Congenital myopathies G71.0 Muscular dystrophy 359.21 Myotonic muscular dystrophy G71.11 Myotonic muscular dystrophy 359.22 Myotonia congenita G71.12 Myotonia congenita 359.23 Myotonic chondrodystrophy G71.13 Myotonic chondrodystrophy 359.24 Drug-induced myotonia G71.14 Drug-induced myotonia reporting code G71.14 359.29 Other specified myotonic disorder G71.19 Other specified myotonic disorders G71.11 Myotonic muscular dystrophy G71.12 Myotonia congenita G71.13 Myotonic chondrodystrophy reporting code G71.14 G71.14 Drug induced myotonia G71.2 Congenital myopathies G71.3 Mitochondrial myopathy, not elsewhere classified G71.8 Other primary disorders of muscles 359.3 Periodic paralysis G72.3 Periodic paralysis 359.4 Toxic myopathy G72.2 Myopathy due to other toxic agents Code first (T51-T65) to identify toxic agent when reporting code G72.2 359.5 Myopathy in endocrine diseases classified elsewhere G73.7 Myopathy in diseases classified elsewhere Code first underlying disease, such as: hyperparathyroidism (E21.0, E21.3) hypoparathyroidism (E20.-) glycogen storage disease (E74.0) lipid storage disorders (E75.-) when reporting code G73.7 359.6 Symptomatic inflammatory myopathy in diseases classified elsewhere G73.7 Myopathy in diseases classified elsewhere Code first underlying disease, such as: hyperparathyroidism (E21.0, E21.3) hypoparathyroidism (E20.-) glycogen storage disease (E74.0) lipid storage disorders (E75.-) when reporting code G73.7 AMERICAN ACADEMY OF NEUROLOGY 16
ICD-9 to ICD-10 conversion of congenital hereditary muscular dystrophy 359.71 Inclusion body myositis [IBM] G72.41 Inclusion body myositis [IBM] 359.79 Other inflammatory and immune myopathies, NEC G72.49 Other inflammatory and immune myopathies, not elsewhere classified G72.41 Inclusion body myositis [IBM] G72.49 Other inflammatory and immune myopathies, not elsewhere classified 359.81 Critical illness myopathy G72.81 Critical illness myopathy 359.89 Other myopathies G72.89 Other specified myopathies G71.3 Mitochondrial myopathy, not elsewhere classified G72.0 Drug-induced myopathy G72.1 Alcoholic myopathy G72.2 Myopathy due to other toxic agents G72.3 Periodic paralysis G72.41 Inclusion body myositis [IBM] G72.49 Other inflammatory and immune myopathies, not elsewhere classified G72.81 Critical illness myopathy Use additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) when reporting codes from category G72 Use additional code to identify alcoholism (F10.-) when reporting code G72.1 Code first (T51-T65) to identify toxic agent when reporting code G72.2 359.9 Myopathy, unspecified G72.9 Myopathy, unspecified G71.3 Mitochondrial myopathy, not elsewhere classified G72.0 Drug-induced myopathy G72.1 Alcoholic myopathy G72.2 Myopathy due to other toxic agents G72.3 Periodic paralysis G72.41 Inclusion body myositis [IBM] G72.49 Other inflammatory and immune myopathies, not elsewhere classified Use additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) when reporting codes from category G72 Use additional code to identify alcoholism (F10.-) when reporting code G72.1 Code first (T51-T65) to identify toxic agent when reporting code G72.2 G72.81 Critical illness myopathy G72.89 Other specified myopathies AMERICAN ACADEMY OF NEUROLOGY 17
ICD-9 to ICD-10 conversion of benign paroxysmal positional vertigo 386.11 Benign paroxysmal positional vertigo H81.13 Benign paroxysmal vertigo, bilateral H81.11 Benign paroxysmal vertigo, right ear H81.12 Benign paroxysmal vertigo, left ear AMERICAN ACADEMY OF NEUROLOGY 18
ICD-9 to ICD-10 conversion of syncope and collapse 780.2 Syncope and collapse R55 Syncope and collapse G90.01 Carotid sinus syncope T67.1XXA T67.1XXD T67.1XXS Heat syncope, initial encounter Heat syncope, subsequent encounter Heat syncope, sequela AMERICAN ACADEMY OF NEUROLOGY 19
ICD-9 to ICD-10 conversion of headache 784.0 Headache R51 Headache For additional I-10 coding options refer to categories G43 (migraine) G44.10 Vascular headache, and G44 (other headache syndromes) NEC, not intractable G44.11 Vascular headache, NEC, intractable 784.40 Voice and resonance disorder, unspecified 784.49 Other voice and resonance disorders R49.9 Unspecified voice and resonance disorder R49.8 Other voice and resonance disorders R49.0 Dysphonia R49.1 Aphonia R49.21 Hypernasality R49.22 Hyponasality R49.8 Other voice and resonance disorders R49.0 Dysphonia R49.1 Aphonia R49.21 Hypernasality R49.22 Hyponasality 784.59 Other speech disturbance R47.02 R47.81 Dysphasia Slurred speech R47.01 R47.1 Aphasia Dysarthria and anarthria Code first underlying disease or condition, such as: Parkinson s disease (G20) when reporting code R47.82 R47.89 Other speech disturbances R47.82 Fluency disorder in conditions classified elsewhere 784.60 Symbolic dysfunction, unspecified R48.9 Unspecified symbolic dysfunctions R47.9 Unspecified speech disturbances R49.0 Dysphonia R49.1 Aphonia R49.21 Hypernasality R49.22 Hyponasality R49.8 Other voice and resonance disorders R48.0 Dyslexia and alexia For additional I-10 coding options R48.1 Agnosia refer to category F81, Specific developmental disorders of R48.2 Apraxia scholastic skills R48.3 Visual agnosia AMERICAN ACADEMY OF NEUROLOGY 20
ICD-9 to ICD-10 conversion of headache 784.69 Other symbolic dysfunction 784.99 Other symptoms involving head and neck R48.1 Agnosia R48.0 Dyslexia and alexia For additional I-10 coding options R48.2 Apraxia R48.3 Visual agnosia refer to category F81, Specific developmental disorders of scholastic skills R48.8 Other symbolic dysfunctions R48.9 Unspecified symbolic dysfunction R06.5 Mouth breathing R06.00 Dyspnea, unspecified R06.7 Sneezing R06.01 Orthopnea R06.89 Other abnormalities of breathing R06.02 Shortness of breath R19.6 Halitosis R06.09 Other forms of dyspnea R06.1 Stridor R06.2 Wheezing R06.3 Periodic breathing R06.4 Hyperventilation R06.6 Hiccough R06.81 Apnea, not elsewhere classified R06.82 Tachypnea, not elsewhere classified R06.83 Snoring AMERICAN ACADEMY OF NEUROLOGY 21