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ICD-10 Guide
DiagnosesAnterior Communicating Artery Aneurysm

Anterior Communicating Artery Aneurysm

ICD-10 Coding for Anterior Communicating Artery Aneurysm(I60.1, I67.1)

PRIMARY SPECIALTYNeurosurgery
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Anterior Communicating Artery Aneurysm?
Essential facts and insights about Anterior Communicating Artery Aneurysm

Key Clinical Considerations:

  • Patients may present with sudden severe headache (thunderclap headache), nausea, vomiting, photophobia, and altered mental status.
  • CT or MRI imaging may reveal subarachnoid hemorrhage or the presence of an aneurysm.
  • Neurological examination may show signs of meningeal irritation or focal neurological deficits.
  • Digital subtraction angiography (DSA) is the gold standard for visualizing the aneurysm.
  • Severity can be assessed using the Hunt and Hess scale for subarachnoid hemorrhage.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Document the patient's presenting symptoms, duration, and severity.
  • Use specific terminology such as 'anterior communicating artery aneurysm' and 'subarachnoid hemorrhage' when applicable.
  • Examples include: 'Patient diagnosed with anterior communicating artery aneurysm confirmed by DSA.'
  • Document medical necessity for imaging studies and interventions.
  • Quality measures may include documentation of neurological assessments and follow-up care.

Coding Guidelines

Usage Guidelines & Examples

  • Use I60.1 for a ruptured anterior communicating artery aneurysm and I67.1 for an unruptured aneurysm.
  • Do not use I60.1 for other types of aneurysms or vascular malformations.
  • Compare with I60.0 (subarachnoid hemorrhage from a non-traumatic rupture of a cerebral aneurysm) and I67.0 (cerebral aneurysm, unspecified).
  • Common errors include misclassifying the type of aneurysm or failing to document rupture status.
  • In complex cases, ensure to clarify the rupture status and any associated complications.

Code Exclusions

Important Exclusions

  • Excludes conditions such as traumatic aneurysms (I60.9) and other types of cerebral aneurysms not involving the anterior communicating artery.
  • Alternative codes for excluded conditions include I67.2 for other specified cerebral aneurysms.
  • Conditions are excluded to ensure accurate representation of the specific aneurysm type and its complications.
  • Common mistakes include misclassifying a traumatic aneurysm as a non-traumatic one.
  • Related but distinct conditions include posterior communicating artery aneurysms and other vascular malformations.

Related ICD-10 Codes

Primary Codes
I60.1
Rupture of anterior communicating artery aneurysm
I67.1
Unruptured anterior communicating artery aneurysm
Ancillary Codes
I69.0
G46.4
Differential Codes
I60.2
I60.2
for hemorrhages from cerebral arteries other than the anterior communicating artery.
I60.1
I60.1
if the aneurysm has ruptured.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Neurosurgery

Specialty Applications

  • This diagnosis applies to patients with cerebral aneurysms, particularly those affecting the anterior communicating artery.
  • Patient populations include adults, with a higher prevalence in females and those with risk factors such as hypertension or family history.
  • Clinical settings include inpatient neurosurgery, outpatient neurology, and emergency departments.
  • Specialty-specific applications are relevant in neurosurgery and interventional radiology.
  • Treatment contexts include surgical clipping or endovascular coiling of the aneurysm.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Template: 'Patient diagnosed with anterior communicating artery aneurysm based on CT findings.'

Template 2

Template: 'Clinical presentation consistent with anterior communicating artery aneurysm including severe headache and neurological deficits.'

Template 3

Template: 'Diagnostic criteria met as evidenced by DSA showing an anterior communicating artery aneurysm.'

Template 4

Template: 'Treatment plan initiated for anterior communicating artery aneurysm with endovascular coiling.'

Template 5

Template: 'Follow-up care for anterior communicating artery aneurysm including monitoring for complications.'

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What documentation is required for this diagnosis?

Detailed documentation of symptoms, imaging results, and treatment plans is required.

How does this differ from similar diagnoses?

Key differentiating factors include the location of the aneurysm and whether it is ruptured.

What are common billing considerations?

Ensure accurate coding for the type of aneurysm and document medical necessity for procedures.

What procedures are typically associated?

Commonly associated procedures include cerebral angiography, clipping, or coiling of the aneurysm.

Are there any quality reporting implications?

Quality measures may include tracking outcomes of surgical interventions and follow-up care.