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Diseases of the circulatory system (I00-I99)

Excludes 2:: certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
systemic connective tissue disorders (M30-M36)
transient cerebral ischemic attacks and related syndromes (G45.-)

Cerebrovascular diseases (I60-I69)

Use additional: code to identify presence of:
Use additional: alcohol abuse and dependence (F10.-)
Use additional: exposure to environmental tobacco smoke (Z77.22)
Use additional: history of tobacco dependence (Z87.891)
Use additional: hypertension (I10-I1A)
Use additional: occupational exposure to environmental tobacco smoke (Z57.31)
Use additional: tobacco dependence (F17.-)
Use additional: tobacco use (Z72.0)
Excludes 1:: traumatic intracranial hemorrhage (S06.-)

I60

Nontraumatic subarachnoid hemorrhage [+]

Use additional	code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)
Excludes 1:	syphilitic ruptured cerebral aneurysm (A52.05)
Excludes 2:	sequelae of subarachnoid hemorrhage (I69.0-)

I60.0

Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation [+]

I60.1

Nontraumatic subarachnoid hemorrhage from middle cerebral artery [+]

I60.2

Nontraumatic subarachnoid hemorrhage from anterior communicating artery

I60.3

Nontraumatic subarachnoid hemorrhage from posterior communicating artery [+]

I60.4

Nontraumatic subarachnoid hemorrhage from basilar artery

I60.5

Nontraumatic subarachnoid hemorrhage from vertebral artery [+]

I60.6

Nontraumatic subarachnoid hemorrhage from other intracranial arteries

I60.7

Nontraumatic subarachnoid hemorrhage from unspecified intracranial artery
Ruptured (congenital) berry aneurysm
Ruptured (congenital) cerebral aneurysm
Subarachnoid hemorrhage (nontraumatic) from cerebral artery NOS
Subarachnoid hemorrhage (nontraumatic) from communicating artery NOS

Excludes 1:

berry aneurysm, nonruptured (I67.1)

I60.8

Other nontraumatic subarachnoid hemorrhage
Meningeal hemorrhage
Rupture of cerebral arteriovenous malformation

I60.9

Nontraumatic subarachnoid hemorrhage, unspecified

I61

Nontraumatic intracerebral hemorrhage [+]

Use additional	code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)
Excludes 2:	sequelae of intracerebral hemorrhage (I69.1-)

I62

Other and unspecified nontraumatic intracranial hemorrhage [+]

Use additional	code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)
Excludes 2:	sequelae of intracranial hemorrhage (I69.2)

I63

Cerebral infarction [+]

Includes:	occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction
Use additional	code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
Use additional	code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)
Excludes 1:	neonatal cerebral infarction (P91.82-)
Excludes 2:	chronic, without residual deficits (sequelae) (Z86.73) sequelae of cerebral infarction (I69.3-)

I63.0

Cerebral infarction due to thrombosis of precerebral arteries [+]

I63.00

Cerebral infarction due to thrombosis of unspecified precerebral artery

I63.01

Cerebral infarction due to thrombosis of vertebral artery [+]

I63.02

Cerebral infarction due to thrombosis of basilar artery

I63.03

Cerebral infarction due to thrombosis of carotid artery [+]

I63.09

Cerebral infarction due to thrombosis of other precerebral artery

I63.1

Cerebral infarction due to embolism of precerebral arteries [+]

I63.10

Cerebral infarction due to embolism of unspecified precerebral artery

I63.11

Cerebral infarction due to embolism of vertebral artery [+]

I63.12

Cerebral infarction due to embolism of basilar artery

I63.13

Cerebral infarction due to embolism of carotid artery [+]

I63.19

Cerebral infarction due to embolism of other precerebral artery

I63.2

Cerebral infarction due to unspecified occlusion or stenosis of precerebral arteries [+]

I63.20

Cerebral infarction due to unspecified occlusion or stenosis of unspecified precerebral arteries

I63.21

Cerebral infarction due to unspecified occlusion or stenosis of vertebral arteries [+]

I63.22

Cerebral infarction due to unspecified occlusion or stenosis of basilar artery

I63.23

Cerebral infarction due to unspecified occlusion or stenosis of carotid arteries [+]

I63.29

Cerebral infarction due to unspecified occlusion or stenosis of other precerebral arteries

I63.3

Cerebral infarction due to thrombosis of cerebral arteries [+]

I63.30

Cerebral infarction due to thrombosis of unspecified cerebral artery

I63.31

Cerebral infarction due to thrombosis of middle cerebral artery [+]

I63.32

Cerebral infarction due to thrombosis of anterior cerebral artery [+]

I63.33

Cerebral infarction due to thrombosis of posterior cerebral artery [+]

I63.34

Cerebral infarction due to thrombosis of cerebellar artery [+]

I63.39

Cerebral infarction due to thrombosis of other cerebral artery

I63.4

Cerebral infarction due to embolism of cerebral arteries [+]

I63.40

Cerebral infarction due to embolism of unspecified cerebral artery

I63.41

Cerebral infarction due to embolism of middle cerebral artery [+]

I63.42

Cerebral infarction due to embolism of anterior cerebral artery [+]

I63.43

Cerebral infarction due to embolism of posterior cerebral artery [+]

I63.44

Cerebral infarction due to embolism of cerebellar artery [+]

I63.49

Cerebral infarction due to embolism of other cerebral artery

I63.5

Cerebral infarction due to unspecified occlusion or stenosis of cerebral arteries [+]

I63.50

Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery

I63.51

Cerebral infarction due to unspecified occlusion or stenosis of middle cerebral artery [+]

I63.52

Cerebral infarction due to unspecified occlusion or stenosis of anterior cerebral artery [+]

I63.53

Cerebral infarction due to unspecified occlusion or stenosis of posterior cerebral artery [+]

I63.54

Cerebral infarction due to unspecified occlusion or stenosis of cerebellar artery [+]

I63.59

Cerebral infarction due to unspecified occlusion or stenosis of other cerebral artery

I63.6

Cerebral infarction due to cerebral venous thrombosis, nonpyogenic

I63.8

Other cerebral infarction [+]

I63.9

Cerebral infarction, unspecified
Stroke NOS

Excludes 2:

transient cerebral ischemic attacks and related syndromes (G45.-)

I65

Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction [+]

Includes:	embolism of precerebral artery narrowing of precerebral artery obstruction (complete) (partial) of precerebral artery thrombosis of precerebral artery
Excludes 1:	insufficiency, NOS, of precerebral artery (G45.-) insufficiency of precerebral arteries causing cerebral infarction (I63.0-I63.2)

I65.0

Occlusion and stenosis of vertebral artery [+]

I65.1

Occlusion and stenosis of basilar artery

I65.2

Occlusion and stenosis of carotid artery [+]

I65.8

Occlusion and stenosis of other precerebral arteries

I65.9

Occlusion and stenosis of unspecified precerebral artery
Occlusion and stenosis of precerebral artery NOS

I66

Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction [+]

Includes:	embolism of cerebral artery narrowing of cerebral artery obstruction (complete) (partial) of cerebral artery thrombosis of cerebral artery
Excludes 1:	Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5)

I66.0

Occlusion and stenosis of middle cerebral artery [+]

I66.1

Occlusion and stenosis of anterior cerebral artery [+]

I66.2

Occlusion and stenosis of posterior cerebral artery [+]

I66.3

Occlusion and stenosis of cerebellar arteries

I66.8

Occlusion and stenosis of other cerebral arteries
Occlusion and stenosis of perforating arteries

I66.9

Occlusion and stenosis of unspecified cerebral artery

I67

Other cerebrovascular diseases [+]

Excludes 1:	Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5-) Occlusion and stenosis of precerebral artery causing cerebral infarction (I63.2-)
Excludes 2:	sequelae of the listed conditions (I69.8)

I67.0

Dissection of cerebral arteries, nonruptured

Excludes 1:

ruptured cerebral arteries (I60.7)

I67.1

Cerebral aneurysm, nonruptured
Cerebral aneurysm NOS
Cerebral arteriovenous fistula, acquired
Internal carotid artery aneurysm, intracranial portion
Internal carotid artery aneurysm, NOS

Excludes 1:

congenital cerebral aneurysm, nonruptured (Q28.-)
ruptured cerebral aneurysm (I60.7)

I67.2

Cerebral atherosclerosis
Atheroma of cerebral and precerebral arteries

I67.3

Progressive vascular leukoencephalopathy
Binswanger's disease

I67.4

Hypertensive encephalopathy

Code also	, if applicable, associated hypertensive conditions such as: essential (primary) hypertension (I10) hypertensive chronic kidney disease (I12.-) hypertensive heart and chronic kidney disease (I13.-) hypertensive heart disease (I11.-)
Excludes 2:	insufficiency, NOS, of precerebral arteries (G45.2)

I67.5

Moyamoya disease

I67.6

Nonpyogenic thrombosis of intracranial venous system
Nonpyogenic thrombosis of cerebral vein
Nonpyogenic thrombosis of intracranial venous sinus

Excludes 1:

nonpyogenic thrombosis of intracranial venous system causing infarction (I63.6)

I67.7

Cerebral arteritis, not elsewhere classified
Granulomatous angiitis of the nervous system

Excludes 1:

allergic granulomatous angiitis (M30.1)

I67.8

Other specified cerebrovascular diseases [+]

I67.81

Acute cerebrovascular insufficiency
Acute cerebrovascular insufficiency unspecified as to location or reversibility

I67.82

Cerebral ischemia
Chronic cerebral ischemia

I67.83

Posterior reversible encephalopathy syndrome
PRES

I67.84

Cerebral vasospasm and vasoconstriction [+]

I67.85

Hereditary cerebrovascular diseases [+]

I67.89

Other cerebrovascular disease

I67.9

Cerebrovascular disease, unspecified

I68

Cerebrovascular disorders in diseases classified elsewhere [+]

I69

Sequelae of cerebrovascular disease [+]

Note:

Category I69 is to be used to indicate conditions in I60-I67 as the cause of sequelae. The 'sequelae' include conditions specified as such or as residuals which may occur at any time after the onset of the causal condition

Excludes 1:

personal history of cerebral infarction without residual deficit (Z86.73)
personal history of prolonged reversible ischemic neurologic deficit (PRIND) (Z86.73)
personal history of reversible ischemic neurologcial deficit (RIND) (Z86.73)
sequelae of traumatic intracranial injury (S06.-)

I69.0

Sequelae of nontraumatic subarachnoid hemorrhage [+]

I69.00

Unspecified sequelae of nontraumatic subarachnoid hemorrhage

I69.01

Cognitive deficits following nontraumatic subarachnoid hemorrhage [+]

I69.02

Speech and language deficits following nontraumatic subarachnoid hemorrhage [+]

I69.03

Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage [+]

I69.04

Monoplegia of lower limb following nontraumatic subarachnoid hemorrhage [+]

I69.05

Hemiplegia and hemiparesis following nontraumatic subarachnoid hemorrhage [+]

I69.06

Other paralytic syndrome following nontraumatic subarachnoid hemorrhage [+]

Use additional	code to identify type of paralytic syndrome, such as:
Use additional	locked-in state (G83.5)
Use additional	quadriplegia (G82.5-)
Excludes 1:	hemiplegia/hemiparesis following nontraumatic subarachnoid hemorrhage (I69.05-) monoplegia of lower limb following nontraumatic subarachnoid hemorrhage (I69.04-) monoplegia of upper limb following nontraumatic subarachnoid hemorrhage (I69.03-)

I69.09

Other sequelae of nontraumatic subarachnoid hemorrhage [+]

I69.1

Sequelae of nontraumatic intracerebral hemorrhage [+]

I69.10

Unspecified sequelae of nontraumatic intracerebral hemorrhage

I69.11

Cognitive deficits following nontraumatic intracerebral hemorrhage [+]

I69.12

Speech and language deficits following nontraumatic intracerebral hemorrhage [+]

I69.13

Monoplegia of upper limb following nontraumatic intracerebral hemorrhage [+]

I69.14

Monoplegia of lower limb following nontraumatic intracerebral hemorrhage [+]

I69.15

Hemiplegia and hemiparesis following nontraumatic intracerebral hemorrhage [+]

I69.16

Other paralytic syndrome following nontraumatic intracerebral hemorrhage [+]

Use additional	code to identify type of paralytic syndrome, such as:
Use additional	locked-in state (G83.5)
Use additional	quadriplegia (G82.5-)
Excludes 1:	hemiplegia/hemiparesis following nontraumatic intracerebral hemorrhage (I69.15-) monoplegia of lower limb following nontraumatic intracerebral hemorrhage (I69.14-) monoplegia of upper limb following nontraumatic intracerebral hemorrhage (I69.13-)

I69.19

Other sequelae of nontraumatic intracerebral hemorrhage [+]

I69.2

Sequelae of other nontraumatic intracranial hemorrhage [+]

I69.20

Unspecified sequelae of other nontraumatic intracranial hemorrhage

I69.21

Cognitive deficits following other nontraumatic intracranial hemorrhage [+]

I69.22

Speech and language deficits following other nontraumatic intracranial hemorrhage [+]

I69.23

Monoplegia of upper limb following other nontraumatic intracranial hemorrhage [+]

I69.24

Monoplegia of lower limb following other nontraumatic intracranial hemorrhage [+]

I69.25

Hemiplegia and hemiparesis following other nontraumatic intracranial hemorrhage [+]

I69.26

Other paralytic syndrome following other nontraumatic intracranial hemorrhage [+]

Use additional	code to identify type of paralytic syndrome, such as:
Use additional	locked-in state (G83.5)
Use additional	quadriplegia (G82.5-)
Excludes 1:	hemiplegia/hemiparesis following other nontraumatic intracranial hemorrhage (I69.25-) monoplegia of lower limb following other nontraumatic intracranial hemorrhage (I69.24-) monoplegia of upper limb following other nontraumatic intracranial hemorrhage (I69.23-)

I69.29

Other sequelae of other nontraumatic intracranial hemorrhage [+]

I69.3

Sequelae of cerebral infarction [+]
Sequelae of stroke NOS

I69.30

Unspecified sequelae of cerebral infarction

I69.31

Cognitive deficits following cerebral infarction [+]

I69.32

Speech and language deficits following cerebral infarction [+]

I69.33

Monoplegia of upper limb following cerebral infarction [+]

I69.34

Monoplegia of lower limb following cerebral infarction [+]

I69.35

Hemiplegia and hemiparesis following cerebral infarction [+]

I69.36

Other paralytic syndrome following cerebral infarction [+]

Use additional	code to identify type of paralytic syndrome, such as:
Use additional	locked-in state (G83.5)
Use additional	quadriplegia (G82.5-)
Excludes 1:	hemiplegia/hemiparesis following cerebral infarction (I69.35-) monoplegia of lower limb following cerebral infarction (I69.34-) monoplegia of upper limb following cerebral infarction (I69.33-)

I69.39

Other sequelae of cerebral infarction [+]

I69.8

Sequelae of other cerebrovascular diseases [+]

Excludes 1:

sequelae of traumatic intracranial injury (S06.-)

I69.80

Unspecified sequelae of other cerebrovascular disease

I69.81

Cognitive deficits following other cerebrovascular disease [+]

I69.82

Speech and language deficits following other cerebrovascular disease [+]

I69.83

Monoplegia of upper limb following other cerebrovascular disease [+]

I69.84

Monoplegia of lower limb following other cerebrovascular disease [+]

I69.85

Hemiplegia and hemiparesis following other cerebrovascular disease [+]

I69.86

Other paralytic syndrome following other cerebrovascular disease [+]

Use additional	code to identify type of paralytic syndrome, such as:
Use additional	locked-in state (G83.5)
Use additional	quadriplegia (G82.5-)
Excludes 1:	hemiplegia/hemiparesis following other cerebrovascular disease (I69.85-) monoplegia of lower limb following other cerebrovascular disease (I69.84-) monoplegia of upper limb following other cerebrovascular disease (I69.83-)

I69.89

Other sequelae of other cerebrovascular disease [+]

I69.9

Sequelae of unspecified cerebrovascular diseases [+]

Excludes 1:

sequelae of stroke (I69.3)
sequelae of traumatic intracranial injury (S06.-)

I69.90

Unspecified sequelae of unspecified cerebrovascular disease

I69.91

Cognitive deficits following unspecified cerebrovascular disease [+]

I69.92

Speech and language deficits following unspecified cerebrovascular disease [+]

I69.93

Monoplegia of upper limb following unspecified cerebrovascular disease [+]

I69.94

Monoplegia of lower limb following unspecified cerebrovascular disease [+]

I69.95

Hemiplegia and hemiparesis following unspecified cerebrovascular disease [+]

I69.96

Other paralytic syndrome following unspecified cerebrovascular disease [+]

Use additional	code to identify type of paralytic syndrome, such as:
Use additional	locked-in state (G83.5)
Use additional	quadriplegia (G82.5-)
Excludes 1:	hemiplegia/hemiparesis following unspecified cerebrovascular disease (I69.95-) monoplegia of lower limb following unspecified cerebrovascular disease (I69.94-) monoplegia of upper limb following unspecified cerebrovascular disease (I69.93-)

I69.99

Other sequelae of unspecified cerebrovascular disease [+]