ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesI28.1

I28.1

Billable

Aneurysm of pulmonary artery

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 I28.1 is a billable code used to indicate a diagnosis of aneurysm of pulmonary artery.

Key Diagnostic Point:

An aneurysm of the pulmonary artery is a localized dilation or bulging of the pulmonary artery, which can lead to serious cardiovascular complications. Clinically, patients may present with symptoms such as chest pain, dyspnea, hemoptysis, or syncope, although some may remain asymptomatic until the aneurysm ruptures. The anatomy involved includes the main pulmonary artery and its branches, which transport deoxygenated blood from the right ventricle to the lungs. Disease progression can be influenced by factors such as hypertension, connective tissue disorders, or pulmonary embolism, leading to increased wall stress and potential rupture. Diagnosis typically involves imaging studies such as echocardiography, CT angiography, or MRI, which can visualize the aneurysm's size and location. Early detection is crucial to manage the risk of rupture and associated complications, including pulmonary hemorrhage or right heart failure.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires imaging and clinical correlation
  • Treatment complexity: May involve surgical intervention or monitoring
  • Documentation requirements: Detailed clinical history and imaging results needed
  • Coding specificity: Requires accurate identification of the aneurysm location and type

Audit Risk Factors

  • Common coding errors: Misidentification of aneurysm type or location
  • Documentation gaps: Incomplete imaging reports or clinical notes
  • Billing challenges: Denials due to lack of supporting documentation for surgical interventions

Specialty Focus

Medical Specialties

Cardiology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Cardiothoracic Surgery

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical significance of I28.1 lies in its potential for serious complications, including rupture and subsequent morbidity or mortality. Understanding the epidemiology of pulmonary artery aneurysms can inform population health strategies, as these conditions may be underdiagnosed. Quality measures may focus on timely imaging and intervention, impacting healthcare utilization patterns and resource allocation in cardiovascular care.

ICD-9 vs ICD-10

The clinical significance of I28.1 lies in its potential for serious complications, including rupture and subsequent morbidity or mortality. Understanding the epidemiology of pulmonary artery aneurysms can inform population health strategies, as these conditions may be underdiagnosed. Quality measures may focus on timely imaging and intervention, impacting healthcare utilization patterns and resource allocation in cardiovascular care.

Reimbursement & Billing Impact

Reimbursement considerations include the complexity of the case and the necessity for surgical intervention. Common denials may arise from insufficient documentation or failure to demonstrate medical necessity for procedures related to the aneurysm. Coders should ensure that all relevant clinical notes and imaging studies are included in the billing submission to support the diagnosis and any associated procedures.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for I00-I99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by I28.1?

I28.1 specifically covers aneurysms of the pulmonary artery, which may arise from various etiologies including congenital defects, infections, or trauma. It does not cover aneurysms of other vascular structures.

When should I28.1 be used instead of related codes?

I28.1 should be used when there is a confirmed diagnosis of a pulmonary artery aneurysm, particularly when imaging studies indicate a significant dilation. It should not be used for pulmonary artery hypertension or other vascular conditions without aneurysmal involvement.

What documentation supports I28.1?

Documentation supporting I28.1 includes imaging studies that confirm the presence of an aneurysm, clinical notes detailing symptoms, and any relevant history of cardiovascular disease or risk factors.