ICD-10-CM Codes
I00-I99 Diseases of the circulatory system
I60-I69 Cerebrovascular diseases
I63- Cerebral infarction
2021 ICD-10-CM Diagnosis Code I63

2021 ICD-10-CM Diagnosis Code I63

Cerebral infarction

2016

2017

2018

2019

2020

2021

Non-Billable/Non-Specific Code

I63 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2021 edition of ICD-10-CM I63 became effective on October 1, 2020.
This is the American ICD-10-CM version of I63 - other international versions of ICD-10 I63 may differ.

Use Additional

Use Additional Help

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.

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 (
ICD-10-CM Diagnosis Code Z92.82
Status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility
Code First
- condition requiring tPA administration, such as:
- acute cerebral infarction (I63.-)
- acute myocardial infarction (I21.-, I22.-)
Z92.82
)

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I63. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

neonatal cerebral infarction (
ICD-10-CM Diagnosis Code P91.82
Neonatal cerebral infarction
Applicable To
- Neonatal stroke
- Perinatal arterial ischemic stroke
- Perinatal cerebral infarction
Type 1 Excludes
- cerebral infarction (I63.-)
Type 2 Excludes
- intracranial hemorrhage of newborn (P52.-)
P91.82-
)

Type 2 Excludes

Type 2 Excludes Help

A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (I63) and the excluded code together.

sequelae of cerebral infarction (
ICD-10-CM Diagnosis Code I69.3
Sequelae of cerebral infarction
Applicable To
- Sequelae of stroke NOS
I69.3-
)

Includes

Includes Help

"Includes" further defines, or give examples of, the content of the code or category.

occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction

The following code(s) above I63 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to I63:

I00-I99
2021 ICD-10-CM Range I00-I99
Diseases of the circulatory system
Type 2 Excludes
- 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.-)
Diseases of the circulatory system
I60-I69
2021 ICD-10-CM Range I60-I69
Cerebrovascular diseases
Type 1 Excludes
- traumatic intracranial hemorrhage (S06.-)
Use Additional
- code to identify presence of:
- alcohol abuse and dependence (F10.-)
- exposure to environmental tobacco smoke (Z77.22)
- history of tobacco dependence (Z87.891)
- hypertension (I10-I16)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Cerebrovascular diseases

Clinical Information

An ischemic condition of the brain, producing a persistent focal neurological deficit in the area of distribution of the cerebral arteries.
The formation of an area of necrosis in the cerebrum caused by an insufficiency of arterial or venous blood flow. Infarcts of the cerebrum are generally classified by hemisphere (i.e., left vs. Right), lobe (e.g., frontal lobe infarction), arterial distribution (e.g., infarction, anterior cerebral artery), and etiology (e.g., embolic infarction).

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change

Code annotations containing back-references to I63:

Code Also: D57.03
, D57.213
, D57.413
, D57.433
, D57.453
, D57.813
, D81.32
, G43.6
, G96.81
, I67.850

ICD-10-CM Diagnosis Code D57.03
Hb-SS disease with cerebral vascular involvement
Code Also
- , if applicable, cerebral infarction (I63.-)
ICD-10-CM Diagnosis Code D57.213
Sickle-cell/Hb-C disease with cerebral vascular involvement
Code Also
- , if applicable, cerebral infarction (I63.-)
ICD-10-CM Diagnosis Code D57.413
Sickle-cell thalassemia, unspecified, with cerebral vascular involvement
Code Also
- , if applicable cerebral infarction (I63.-)
ICD-10-CM Diagnosis Code D57.433
Sickle-cell thalassemia beta zero with cerebral vascular involvement
Applicable To
- HbS-beta zero with cerebral vascular involvement
- Sickle-cell beta zero with cerebral vascular involvement
Code Also
- , if applicable cerebral infarction (I63.-)
ICD-10-CM Diagnosis Code D57.453
Sickle-cell thalassemia beta plus with cerebral vascular involvement
Applicable To
- HbS-beta plus with cerebral vascular involvement
- Sickle-cell beta plus with cerebral vascular involvement
Code Also
- , if applicable cerebral infarction (I63.-)
ICD-10-CM Diagnosis Code D57.813
Other sickle-cell disorders with cerebral vascular involvement
Code Also
- , if applicable: cerebral infarction (I63.-)
ICD-10-CM Diagnosis Code D81.32
Adenosine deaminase 2 deficiency
Applicable To
- ADA2 deficiency
- Adenosine deaminase deficiency type 2
Code Also
- , if applicable, any associated manifestations, such as:
- polyarteritis nodosa (M30.0)
- stroke (I63.-)
ICD-10-CM Diagnosis Code G43.6
Persistent migraine aura with cerebral infarction
Code Also
- the type of cerebral infarction (I63.-)
ICD-10-CM Diagnosis Code G96.81
Intracranial hypotension
Code Also
- any associated diagnoses, such as:
- Brachial amyotrophy (G54.5)
- Cerebrospinal fluid leak from spine (G96.02)
- Cranial nerve disorders in diseases classified elsewhere (G53)
- Nerve root and compressions in diseases classified elsewhere (G55)
- Nonpyogenic thrombosis of intracranial venous system (I67.6)
- Nontraumatic intracerebral hemorrhage (I61.-)
- Nontraumatic subdural hemorrhage (I62.0-)
- Other and unspecified cord compression (G95.2-)
- Other secondary parkinsonism (G21.8)
- Reversible cerebrovascular vasoconstriction syndrome (I67.841)
- Spinal cord herniation (G95.89)
- Stroke (I63.-)
- Syringomyelia (G95.0)
ICD-10-CM Diagnosis Code I67.850
Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
Applicable To
- CADASIL
Code Also
- any associated diagnoses, such as:
- epilepsy (G40.-)
- stroke (I63.-)
- vascular dementia (F01.-)
Code First: R29.7
, Z92.82

ICD-10-CM Diagnosis Code R29.7
National Institutes of Health Stroke Scale (NIHSS) score
Code First
- the type of cerebral infarction (I63.-)
ICD-10-CM Diagnosis Code Z92.82
Status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility
Code First
- condition requiring tPA administration, such as:
- acute cerebral infarction (I63.-)
- acute myocardial infarction (I21.-, I22.-)
Type 1 Excludes: P91.82

ICD-10-CM Diagnosis Code P91.82
Neonatal cerebral infarction
Applicable To
- Neonatal stroke
- Perinatal arterial ischemic stroke
- Perinatal cerebral infarction
Type 1 Excludes
- cerebral infarction (I63.-)
Type 2 Excludes
- intracranial hemorrhage of newborn (P52.-)

ICD-10-CM Codes Adjacent To I63

I61.8 Other nontraumatic intracerebral hemorrhage

I61.9 Nontraumatic intracerebral hemorrhage, unspecified

I62 Other and unspecified nontraumatic intracranial hemorrhage

I62.0 Nontraumatic subdural hemorrhage

I62.00 …… unspecified

I62.01 Nontraumatic acute subdural hemorrhage

I62.02 Nontraumatic subacute subdural hemorrhage

I62.03 Nontraumatic chronic subdural hemorrhage

I62.1 Nontraumatic extradural hemorrhage

I62.9 Nontraumatic intracranial hemorrhage, unspecified

I63 Cerebral infarction

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

I63.011 Cerebral infarction due to thrombosis of right vertebral artery

I63.012 Cerebral infarction due to thrombosis of left vertebral artery

I63.013 Cerebral infarction due to thrombosis of bilateral vertebral arteries

I63.019 Cerebral infarction due to thrombosis of unspecified vertebral artery

I63.02 Cerebral infarction due to thrombosis of basilar artery

I63.03 Cerebral infarction due to thrombosis of carotid artery

I63.031 Cerebral infarction due to thrombosis of right carotid artery

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2021 ICD-10-CM Diagnosis Code I63

Cerebral infarction

Status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility

Neonatal cerebral infarction

Sequelae of cerebral infarction

Diseases of the circulatory system

Cerebrovascular diseases

Hb-SS disease with cerebral vascular involvement

Sickle-cell/Hb-C disease with cerebral vascular involvement

Sickle-cell thalassemia, unspecified, with cerebral vascular involvement

Sickle-cell thalassemia beta zero with cerebral vascular involvement

Sickle-cell thalassemia beta plus with cerebral vascular involvement

Other sickle-cell disorders with cerebral vascular involvement

Adenosine deaminase 2 deficiency

Persistent migraine aura with cerebral infarction

Intracranial hypotension

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy

National Institutes of Health Stroke Scale (NIHSS) score

Status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility

Neonatal cerebral infarction