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ICD-10 Guide
DiagnosesArteriovenous Malformation

Arteriovenous Malformation

ICD-10 Coding for Arteriovenous Malformation(Q27.3, I67.1)

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

Diagnosis Overview

What is Arteriovenous Malformation?
Essential facts and insights about Arteriovenous Malformation

Key Clinical Considerations:

  • Patients may present with symptoms such as headaches, seizures, or neurological deficits depending on the location and size of the arteriovenous malformation (AVM).
  • Imaging studies such as MRI or CT scans may reveal the presence of an AVM, showing abnormal blood vessel connections.
  • Physical examination may show neurological deficits or signs of increased intracranial pressure.
  • Angiography is often used to visualize the blood vessels and confirm the diagnosis of AVM.
  • Severity can be assessed based on the size of the AVM, the presence of symptoms, and the risk of hemorrhage.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Medical records must include a detailed history of symptoms, physical examination findings, and results from imaging studies.
  • Specific terminology such as 'arteriovenous malformation' and associated symptoms must be documented clearly.
  • Examples include documenting the size and location of the AVM and any neurological deficits observed.
  • Medical necessity must be established through documentation of symptoms and the need for imaging or surgical intervention.
  • Quality measures may require documentation of follow-up care and monitoring of symptoms.

Coding Guidelines

Usage Guidelines & Examples

  • Use the diagnosis code Q27.3 for congenital AVMs and I67.1 for acquired AVMs, depending on the patient's history.
  • Do not use these codes for other vascular malformations such as venous malformations or lymphatic malformations.
  • Compare with related codes such as Q27.2 (other specified congenital malformations of blood vessels) for similar conditions.
  • Common errors include misclassifying the type of malformation; ensure the correct code is selected based on the clinical findings.
  • In complex cases, consider the patient's full clinical picture and any co-existing conditions that may affect coding.

Code Exclusions

Important Exclusions

  • Excludes conditions such as venous malformations (I87.0) and lymphatic malformations (Q82.8).
  • Alternative codes for excluded conditions should be used based on the specific type of vascular malformation.
  • Conditions are excluded because they have different pathophysiological mechanisms and treatment approaches.
  • Common mistakes include using AVM codes for other types of vascular malformations; ensure accurate diagnosis.
  • Related but distinct conditions include dural arteriovenous fistulas and other vascular anomalies.

Related ICD-10 Codes

Primary Codes
Q27.3
Arteriovenous malformation, unspecified
I67.1
Cerebral arteriovenous malformation
Ancillary Codes
R58
Differential Codes
K55.21
I60.8

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 congenital or acquired AVMs, often seen in neurosurgery.
  • Patient populations include all ages, but certain types may be more prevalent in younger individuals.
  • Clinical settings include inpatient care for surgical intervention and outpatient follow-up for monitoring.
  • Specialty-specific applications are primarily in neurosurgery and interventional radiology.
  • Treatment contexts include surgical resection, endovascular therapy, or observation based on symptoms.

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 arteriovenous malformation based on MRI findings showing abnormal vascular connections.'

Template 2

Template: 'Clinical presentation consistent with AVM including recurrent headaches and seizures.'

Template 3

Template: 'Diagnostic criteria met as evidenced by angiography confirming the presence of an AVM.'

Template 4

Template: 'Treatment plan initiated for AVM with endovascular embolization scheduled.'

Template 5

Template: 'Follow-up care for AVM including monitoring for neurological symptoms and imaging at 6 months.'

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?

Documentation must include clinical findings, imaging results, and treatment plans.

How does this differ from similar diagnoses?

AVMs are characterized by direct connections between arteries and veins, unlike other vascular malformations.

What are common billing considerations?

Ensure that medical necessity is documented to support claims for imaging and surgical procedures.

What procedures are typically associated?

Common CPT codes include 61626 for endovascular treatment and 61582 for surgical resection.

Are there any quality reporting implications?

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