2020 ICD-10-CM Diagnosis Code I67.1

Cerebral aneurysm, nonruptured

    2016 2017 2018 2019 2020 Billable/Specific Code
  • I67.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM I67.1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of I67.1 - other international versions of ICD-10 I67.1 may differ.
Applicable To
  • Cerebral aneurysm NOS
  • Cerebral arteriovenous fistula, acquired
  • Internal carotid artery aneurysm, intracranial portion
  • Internal carotid artery aneurysm, NOS
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 I67.1. 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.
  • congenital cerebral aneurysm, nonruptured (
    ICD-10-CM Diagnosis Code Q28
    • Q28 Other congenital malformations of circulatory...
      • Q28.0 Arteriovenous malformation of precerebral ves...
      • Q28.1 Other malformations of precerebral vessels
      • Q28.2 Arteriovenous malformation of cerebral vessel...
      • Q28.3 Other malformations of cerebral vessels
      • Q28.8 Other specified congenital malformations of c...
      • Q28.9 Congenital malformation of circulatory system...
    Q28.-
    )
  • ruptured cerebral aneurysm (
    ICD-10-CM Diagnosis Code I60.7

    Nontraumatic subarachnoid hemorrhage from unspecified intracranial artery

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Ruptured (congenital) berry aneurysm
    • Ruptured (congenital) cerebral aneurysm
    • Subarachnoid hemorrhage (nontraumatic) from cerebral artery NOS
    • Subarachnoid hemorrhage (nontraumatic) from communicating artery NOS
    Type 1 Excludes
    • berry aneurysm, nonruptured (I67.1)
    I60.7
    )
The following code(s) above I67.1 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 I67.1:
  • I00-I99
    2020 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
    2020 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
  • I67
    ICD-10-CM Diagnosis Code I67

    Other cerebrovascular diseases

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • sequelae of the listed conditions (I69.8)
    Other cerebrovascular diseases
Approximate Synonyms
  • Aneurysm of internal carotid artery
  • Aneurysm of intracranial portion of internal carotid artery
  • Aneurysm of intracranial portion of left internal carotid artery
  • Aneurysm of intracranial portion of right internal carotid artery
  • Aneurysm of left internal carotid artery
  • Aneurysm of right internal carotid artery
  • Aneurysm, internal carotid artery
  • Carotid cavernous fistula
  • Carotid cavernous fistula, acquired
  • Carotid cavernous fistula, spontaneous
  • Intracranial aneurysm
  • Left acquired carotid cavernous fistula
  • Left internal carotid artery aneurysm
  • Left internal carotid artery aneurysm, intracranial portion
  • Non-ruptured acquired cerebral aneurysm
  • Nonruptured acquired cerebral aneurysm
  • Nonruptured cerebral aneurysm
  • Right acquired carotid cavernous fistula
  • Right internal carotid artery aneurysm
  • Right internal carotid artery aneurysm, intracranial portion
Clinical Information
  • Congenital or acquired abnormal outpouching of an intracranial blood vessel wall; saccular (berry) aneurysms are the most common variant, and tend to form at arterial branch points near the base of the brain; rupture results in subarachnoid hemorrhage or intracranial hemorrhages; giant aneurysms (>2.5 cm in diameter) may compress adjacent structures, including the oculomotor nerve.
ICD-10-CM I67.1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 091 Other disorders of nervous system with mcc
  • 092 Other disorders of nervous system with cc
  • 093 Other disorders of nervous system without cc/mcc

Convert I67.1 to ICD-9-CM

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
Code annotations containing back-references to I67.1:
  • Type 1 Excludes: I72.0
    , I72.0
    , I60.7
    ICD-10-CM Diagnosis Code I72.0

    Aneurysm of carotid artery

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Aneurysm of common carotid artery
    • Aneurysm of external carotid artery
    • Aneurysm of internal carotid artery, extracranial portion
    Type 1 Excludes
    • aneurysm of internal carotid artery, intracranial portion (I67.1)
    • aneurysm of internal carotid artery NOS (I67.1)
    ICD-10-CM Diagnosis Code I72.0

    Aneurysm of carotid artery

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Aneurysm of common carotid artery
    • Aneurysm of external carotid artery
    • Aneurysm of internal carotid artery, extracranial portion
    Type 1 Excludes
    • aneurysm of internal carotid artery, intracranial portion (I67.1)
    • aneurysm of internal carotid artery NOS (I67.1)
    ICD-10-CM Diagnosis Code I60.7

    Nontraumatic subarachnoid hemorrhage from unspecified intracranial artery

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Ruptured (congenital) berry aneurysm
    • Ruptured (congenital) cerebral aneurysm
    • Subarachnoid hemorrhage (nontraumatic) from cerebral artery NOS
    • Subarachnoid hemorrhage (nontraumatic) from communicating artery NOS
    Type 1 Excludes
    • berry aneurysm, nonruptured (I67.1)
  • Type 2 Excludes: I72
    , I77.0
    ICD-10-CM Diagnosis Code I72

    Other aneurysm

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • aneurysm (cirsoid) (false) (ruptured)
    Type 2 Excludes
    • acquired aneurysm (I77.0)
    • aneurysm (of) aorta (I71.-)
    • aneurysm (of) arteriovenous NOS (Q27.3-)
    • carotid artery dissection (I77.71)
    • cerebral (nonruptured) aneurysm (I67.1)
    • coronary aneurysm (I25.4)
    • coronary artery dissection (I25.42)
    • dissection of artery NEC (I77.79)
    • dissection of precerebral artery, congenital (nonruptured) (Q28.1)
    • heart aneurysm (I25.3)
    • iliac artery dissection (I77.72)
    • precerebral artery, congential (nonruptured) (Q28.1)
    • pulmonary artery aneurysm (I28.1)
    • renal artery dissection (I77.73)
    • retinal aneurysm (H35.0)
    • ruptured cerebral aneurysm (I60.7)
    • varicose aneurysm (I77.0)
    • vertebral artery dissection (I77.74)
    ICD-10-CM Diagnosis Code I77.0

    Arteriovenous fistula, acquired

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Aneurysmal varix
    • Arteriovenous aneurysm, acquired
    Type 1 Excludes
    • arteriovenous aneurysm NOS (Q27.3-)
    • presence of arteriovenous shunt (fistula) for dialysis (Z99.2)
    • traumatic - see injury of blood vessel by body region
    Type 2 Excludes

Diagnosis Index entries containing back-references to I67.1:
  • Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) I72.9
    ICD-10-CM Diagnosis Code I72.9

    Aneurysm of unspecified site

      2016 2017 2018 2019 2020 Billable/Specific Code
    • arteriosclerotic I72.9
      ICD-10-CM Diagnosis Code I72.9

      Aneurysm of unspecified site

        2016 2017 2018 2019 2020 Billable/Specific Code
    • arteriovenous (congenital) - see also Malformation, arteriovenous
      • acquired I77.0
        ICD-10-CM Diagnosis Code I77.0

        Arteriovenous fistula, acquired

          2016 2017 2018 2019 2020 Billable/Specific Code
        Applicable To
        • Aneurysmal varix
        • Arteriovenous aneurysm, acquired
        Type 1 Excludes
        • arteriovenous aneurysm NOS (Q27.3-)
        • presence of arteriovenous shunt (fistula) for dialysis (Z99.2)
        • traumatic - see injury of blood vessel by body region
        Type 2 Excludes
    • berry (congenital) (nonruptured) I67.1
    • brain I67.1
      • arteriosclerotic I67.1
      • arteriovenous (congenital) (nonruptured) Q28.2
        ICD-10-CM Diagnosis Code Q28.2

        Arteriovenous malformation of cerebral vessels

          2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
        Applicable To
        • Arteriovenous malformation of brain NOS
        • Congenital arteriovenous cerebral aneurysm (nonruptured)
      • berry (congenital) (nonruptured) I67.1
      • meninges I67.1
      • miliary (congenital) (nonruptured) I67.1
    • carotid artery (common) (external) I72.0
      ICD-10-CM Diagnosis Code I72.0

      Aneurysm of carotid artery

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Aneurysm of common carotid artery
      • Aneurysm of external carotid artery
      • Aneurysm of internal carotid artery, extracranial portion
      Type 1 Excludes
      • aneurysm of internal carotid artery, intracranial portion (I67.1)
      • aneurysm of internal carotid artery NOS (I67.1)
    • cavernous sinus I67.1
    • circle of Willis I67.1
    • miliary (congenital) I67.1
  • Fistula (cutaneous) L98.8
    ICD-10-CM Diagnosis Code L98.8

    Other specified disorders of the skin and subcutaneous tissue

      2016 2017 2018 2019 2020 Billable/Specific Code
    • arteriovenous (acquired) (nonruptured) I77.0
      ICD-10-CM Diagnosis Code I77.0

      Arteriovenous fistula, acquired

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Aneurysmal varix
      • Arteriovenous aneurysm, acquired
      Type 1 Excludes
      • arteriovenous aneurysm NOS (Q27.3-)
      • presence of arteriovenous shunt (fistula) for dialysis (Z99.2)
      • traumatic - see injury of blood vessel by body region
      Type 2 Excludes
    • brain G93.89
      ICD-10-CM Diagnosis Code G93.89

      Other specified disorders of brain

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Postradiation encephalopathy

ICD-10-CM Codes Adjacent To I67.1
I66.2 Occlusion and stenosis of posterior cerebral artery
I66.21 Occlusion and stenosis of right posterior cerebral artery
I66.22 Occlusion and stenosis of left posterior cerebral artery
I66.23 Occlusion and stenosis of bilateral posterior cerebral arteries
I66.29 Occlusion and stenosis of unspecified posterior cerebral artery
I66.3 Occlusion and stenosis of cerebellar arteries
I66.8 Occlusion and stenosis of other cerebral arteries
I66.9 Occlusion and stenosis of unspecified cerebral artery
I67 Other cerebrovascular diseases
I67.0 Dissection of cerebral arteries, nonruptured
I67.1 Cerebral aneurysm, nonruptured
I67.2 Cerebral atherosclerosis
I67.3 Progressive vascular leukoencephalopathy
I67.4 Hypertensive encephalopathy
I67.5 Moyamoya disease
I67.6 Nonpyogenic thrombosis of intracranial venous system
I67.7 Cerebral arteritis, not elsewhere classified
I67.8 Other specified cerebrovascular diseases
I67.81 Acute cerebrovascular insufficiency
I67.82 Cerebral ischemia
I67.83 Posterior reversible encephalopathy syndrome

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