2021 ICD-10-CM Diagnosis Code I65.02

Occlusion and stenosis of left vertebral artery

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • I65.02 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM I65.02 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of I65.02 - other international versions of ICD-10 I65.02 may differ.
The following code(s) above I65.02 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 I65.02:
  • 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
  • I65
    ICD-10-CM Diagnosis Code I65

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

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Includes
    • embolism of precerebral artery
    • narrowing of precerebral artery
    • obstruction (complete) (partial) of precerebral artery
    • thrombosis of precerebral artery
    Type 1 Excludes
    • insufficiency, NOS, of precerebral artery (G45.-)
    • insufficiency of precerebral arteries causing cerebral infarction (I63.0-I63.2)
    Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
Approximate Synonyms
  • Left vertebral artery stenosis
  • Left vertebral artery thrombosis
  • Occlusion of left vertebral artery
  • Stenosis of left vertebral artery
  • Vertebral artery thrombosis
ICD-10-CM I65.02 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 061 Ischemic stroke, precerebral occlusion or transient ischemia with thrombolytic agent with mcc
  • 062 Ischemic stroke, precerebral occlusion or transient ischemia with thrombolytic agent with cc
  • 063 Ischemic stroke, precerebral occlusion or transient ischemia with thrombolytic agent without cc/mcc
  • 067 Nonspecific cva and precerebral occlusion without infarction with mcc
  • 068 Nonspecific cva and precerebral occlusion without infarction without mcc

Convert I65.02 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
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To I65.02
I63.549 Cerebral infarction due to unspecified occlusion or stenosis of unspecified 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
I63.81 …… due to occlusion or stenosis of small artery
I63.89 Other cerebral infarction
I63.9 Cerebral infarction, unspecified
I65 Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
I65.0 Occlusion and stenosis of vertebral artery
I65.01 Occlusion and stenosis of right vertebral artery
I65.02 Occlusion and stenosis of left vertebral artery
I65.03 Occlusion and stenosis of bilateral vertebral arteries
I65.09 Occlusion and stenosis of unspecified vertebral artery
I65.1 Occlusion and stenosis of basilar artery
I65.2 Occlusion and stenosis of carotid artery
I65.21 Occlusion and stenosis of right carotid artery
I65.22 Occlusion and stenosis of left carotid artery
I65.23 Occlusion and stenosis of bilateral carotid arteries
I65.29 Occlusion and stenosis of unspecified carotid artery
I65.8 Occlusion and stenosis of other precerebral arteries
I65.9 Occlusion and stenosis of unspecified precerebral artery

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