I65.9
BillableOcclusion and stenosis of unspecified precerebral artery
Occlusion and stenosis of unspecified precerebral artery
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Occlusion and stenosis of precerebral artery NOS
Includes
Conditions included under this code
- embolism of precerebral artery
- narrowing of precerebral artery
- obstruction (complete) (partial) of precerebral artery
- thrombosis of precerebral artery
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •systemic connective tissue disordersM30-M36
- •transient cerebral ischemic attacks and related syndromesG45
Use Additional Code
Additional codes that should follow this code
Related Codes(4)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(38)
SNOMED CT
- Narrowing of precerebral artery1055001
- Stenosis of precerebral artery1055001
- Multiple AND bilateral precerebral artery thrombosis14977000
- Obstruction of precerebral artery28790007
- Embolism of multiple and bilateral precerebral arteries37943007
- Multiple and bilateral precerebral artery emboli37943007
- Embolism of precerebral artery40276003
- Thrombosis of precerebral artery48601002
- Multiple AND bilateral precerebral artery obstruction67992007
- Multiple AND bilateral precerebral artery stenosis73192008
- Multiple and bilateral precerebral arterial occlusion195183002
- Occlusion of precerebral artery266253001
- Precerebral arterial occlusion266253001
- Thromboembolus of precerebral artery446712002
- Postoperative thromboembolism of precerebral artery698363002
- Postoperative thromboembolus of precerebral artery698363002
- Multiple and bilateral precerebral artery stenosis without infarction430861000124102
UMLS
Clinical Terms
- Postoperative thromboembolus of precerebral artery
- Stenosis of precerebral artery
- Occlusion and stenosis of precerebral artery NOS
- Multiple AND bilateral precerebral artery obstruction
- Multiple AND bilateral precerebral artery stenosis
- Multiple and bilateral precerebral artery stenosis without infarction
- Precerebral arterial occlusion
- Multiple and bilateral precerebral artery emboli
- Thrombosis of precerebral artery
- Postoperative thromboembolism of precerebral artery
- Embolism of multiple and bilateral precerebral arteries
- Narrowing of precerebral artery
- Multiple and bilateral precerebral arterial occlusion
- Embolism of precerebral artery
- Occlusion of precerebral artery
- Multiple AND bilateral precerebral artery thrombosis
- Obstruction of precerebral artery
- Thromboembolus of precerebral artery
Frequently Asked Questions
What is the ICD-10 code for occlusion and stenosis of unspecified precerebral artery?
The ICD-10-CM code for occlusion and stenosis of unspecified precerebral artery is I65.9. The full clinical description is "Occlusion and stenosis of unspecified precerebral artery". I65.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I65.9 mean?
ICD-10-CM code I65.9 represents “Occlusion and stenosis of unspecified precerebral artery”. It is classified under Chapter 9: Diseases of the Circulatory System and is a billable/specific code that can be used on a claim.
Is I65.9 a billable code?
Yes, I65.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I65.9 in?
I65.9 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I65.9?
I65.9 has Excludes1 notes indicating codes that cannot be used together with it, including: traumatic intracranial hemorrhage (S06.-); insufficiency, NOS, of precerebral artery (G45.-); insufficiency of precerebral arteries causing cerebral infarction (I63.0-I63.2).
Are additional codes required with I65.9?
Yes, when using I65.9, also report: presence of:; alcohol abuse and dependence (F10.-); exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891); hypertension (I10-I1A); occupational exposure to environmental tobacco smoke (Z57.31); tobacco dependence (F17.-); tobacco use (Z72.0).
What SNOMED CT codes does I65.9 map to?
I65.9 maps to 13 SNOMED CT concepts: 37943007, 40276003, 67992007, 73192008, 14977000, and 8 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I65.9?
I65.9 is linked to 1 UMLS Concept Unique Identifier: C0155727. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I65.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like occlusion and stenosis of unspecified precerebral artery affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of I65.9?
I65.9 maps to the ICD-11 code: BD55 (Asymptomatic stenosis of intracranial or extracranial artery).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.