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