Pulmonary Billing Services: Accurate Coding and Revenue Cycle Strategies to Improve Reimbursement

Pulmonary practices manage a wide range of diagnostic and treatment services for patients with respiratory conditions. From asthma and COPD management to pulmonary function testing, sleep-related disorders, bronchoscopy, and complex chronic disease care, these services require accurate coding, thorough documentation, and careful claims management.

Because pulmonary care often involves multiple procedures and diagnostic services during a single episode of care, billing errors can quickly lead to claim denials, delayed reimbursement, underpayments, and revenue leakage.

Specialized pulmonary billing services help practices streamline their Revenue Cycle Management (RCM), improve claim accuracy, reduce denials, and ensure that appropriately documented services are reimbursed.

Why Pulmonary Billing Requires Specialized Expertise

Pulmonary medicine combines evaluation and management services with diagnostic testing and procedures. Each service may have specific coding, documentation, medical-necessity, and payer requirements.

Common pulmonary services include:

• Pulmonary function testing
• Spirometry
• Bronchodilator studies
• Bronchoscopy
• Sleep-related respiratory care
• Asthma management
• COPD management
• Chronic respiratory disease management
• Oxygen therapy management
• Sleep apnea evaluation
• Thoracic procedures
• Chest imaging interpretation
• Hospital and transitional care
• Office-based E/M services

Accurately connecting the patient’s diagnosis, clinical documentation, and services performed is essential for successful reimbursement.

Common Conditions Managed by Pulmonary Practices

Pulmonologists commonly treat patients with conditions such as:

• Chronic obstructive pulmonary disease (COPD)
• Asthma
• Sleep apnea
• Pneumonia
• Chronic cough
• Pulmonary hypertension
• Interstitial lung disease
• Emphysema
• Bronchitis
• Respiratory infections
• Pleural diseases
• Lung nodules
• Respiratory failure
• Occupational lung diseases

Accurate ICD-10-CM coding helps establish the reason for the encounter and, where applicable, supports medical necessity for diagnostic testing and procedures.

Pulmonary Function Test Billing

Pulmonary function testing is an important part of respiratory care and can involve several different diagnostic measurements.

Depending on the service, testing may evaluate:

• Lung volumes
• Airflow
• Diffusion capacity
• Spirometry
• Bronchodilator response
• Pulmonary function abnormalities

Billing teams should ensure that the documentation supports the specific test performed and that the appropriate professional, technical, or global component is reported when applicable.

Common problems include:

• Incorrect CPT selection
• Missing documentation
• Incorrect modifiers
• Incorrect components
• Diagnosis not supporting medical necessity
• Duplicate billing

Spirometry and Diagnostic Testing

Spirometry is frequently used to evaluate and monitor conditions such as asthma and COPD.

The medical record should appropriately support:

• Reason for testing
• Relevant diagnosis or symptoms
• Test performed
• Results
• Interpretation when applicable
• Physician involvement

Proper documentation can help reduce medical-necessity and coding-related denials.

Bronchoscopy Billing

Bronchoscopy is one of the more complex areas of pulmonary billing.

Depending on the procedure, services may involve:

• Diagnostic bronchoscopy
• Bronchoalveolar lavage
• Biopsy
• Brushings
• Specimen collection
• Foreign body removal
• Other therapeutic interventions

The billing team must carefully review the operative/procedure report to determine exactly what was performed.

Incorrectly reporting bundled or separately reportable services can result in claim edits and denials.

E/M Coding in Pulmonary Practices

Pulmonologists frequently perform new and established patient evaluations for respiratory conditions.

E/M documentation should appropriately support:

• Patient history
• Examination, when applicable
• Medical decision-making
• Problems addressed
• Data reviewed
• Treatment decisions
• Follow-up plan

Providers should select the E/M level supported by the documentation rather than automatically using a higher or lower level.

Common CPT Codes in Pulmonary Billing

The following are examples of CPT codes commonly encountered in pulmonary practices:

Medical Necessity in Pulmonary Billing

Medical necessity is a major consideration for pulmonary diagnostic testing.

Tests and procedures should be supported by appropriate clinical documentation explaining why they are necessary.

For example, pulmonary testing may be ordered because of:

• Shortness of breath
• Chronic cough
• Suspected COPD
• Asthma
• Abnormal pulmonary findings
• Exercise intolerance
• Monitoring of an established respiratory condition

The diagnosis reported should accurately correspond with the provider’s documentation.

Common Pulmonary Billing Errors

Incorrect CPT Codes

Selecting a code that does not accurately describe the service performed can lead to claim rejection or denial.

Incorrect Modifiers

Modifiers should only be reported when supported by the circumstances and applicable coding guidelines.

Missing Procedure Documentation

Procedural claims should be supported by complete procedure notes.

Medical Necessity Issues

The diagnosis and documentation should appropriately support the service.

Incorrect Billing Components

Diagnostic testing may involve professional and technical components. Incorrectly reporting these components can affect reimbursement.

Duplicate or Bundled Services

Services that are included in another reported procedure should not be incorrectly billed separately.

How to Reduce Pulmonary Claim Denials

A strong denial-prevention strategy begins before claims are submitted.

Verify Insurance Eligibility

Confirm:

• Active coverage
• Benefits
• Network status
• Deductible
• Coinsurance
• Copayment
• Authorization requirements

Review Coding

Check CPT, HCPCS, ICD-10-CM, modifiers, and units.

Validate Medical Necessity

Ensure the diagnosis and documentation support the service.

Review Procedure Notes

Confirm that the billed procedure accurately reflects the documented service.

Submit Claims Promptly

Timely submission helps reduce filing-limit issues and improves cash flow.

Analyze Denial Trends

Track denials by payer, CPT code, provider, and reason.

Prior Authorization Management

Some pulmonary medications, procedures, imaging services, and specialty treatments may require authorization.

An effective authorization workflow should track:

• Authorization number
• Requested service
• Approved service
• Number of approved visits or units
• Effective date
• Expiration date
• Payer
• Patient

Missing or expired authorization can result in preventable claim denials.

Pulmonary A/R Management

Even clean claims can remain unpaid if they are not actively monitored.

A strong A/R process should categorize outstanding claims by:

• Payer
• Age
• Balance
• Denial status
• Procedure
• Provider
• Follow-up status

Accounts older than 90 days should receive particular attention.

A/R teams should document each payer interaction and establish the next action required for unresolved claims.

Underpayment Recovery

Pulmonary practices should also monitor claims that were paid incorrectly.

A claim can be processed successfully but still be reimbursed below the expected contractual amount.

Payment variance analysis can identify:

• Incorrect reimbursement
• Contractual discrepancies
• Incorrect adjustments
• Missing payments
• Payer processing errors

Comparing expected reimbursement with actual payment can uncover revenue that would otherwise remain unnoticed.

Pulmonary Revenue Cycle KPIs

Practice managers should regularly monitor key revenue cycle metrics.

These are general operational benchmarks and may vary depending on payer mix, practice size, service mix, and contractual arrangements.

Technology and Pulmonary Revenue Cycle Management

Technology can provide pulmonary practices with greater visibility into their financial performance.

Modern RCM systems can support:

• Automated eligibility verification
• Claim scrubbing
• Authorization tracking
• Electronic claim submission
• Payment posting
• Denial analytics
• A/R monitoring
• Underpayment analysis
• Patient statements
• Revenue dashboards

Data-driven reporting can help practices identify which payers, services, or providers are creating the greatest revenue-cycle challenges.

Why Revenue-Focused Pulmonary Billing Matters

Pulmonary practices don’t necessarily have to increase patient volume to improve financial performance.

Revenue opportunities may already exist within the current patient population through:

• Better charge capture
• More accurate coding
• Reduced denials
• Faster A/R follow-up
• Underpayment recovery
• Improved authorization workflows
• Better patient collections

The objective is to capture the revenue the practice has already earned.

How Right Medical Billing Can Help

At Right Medical Billing (RMB), we provide specialized pulmonary billing services designed to help practices improve reimbursement and streamline their revenue cycle.

Our services include:

• Pulmonary medical billing
• Pulmonology coding
• CPT and ICD-10-CM coding
• Pulmonary function test billing
• Spirometry billing
• Bronchoscopy billing
• Insurance verification
• Benefits verification
• Prior authorization support
• Claim submission
• Denial management
• Appeals
• Payment posting
• A/R follow-up
• Underpayment recovery
• Patient collections support
• Revenue cycle reporting

RMB focuses on more than simply submitting claims. Our goal is to identify where revenue is being delayed, denied, or lost—and create processes that help prevent those issues from recurring.

Final Takeaway

Accurate pulmonary billing is essential for maintaining a strong and predictable healthcare revenue cycle.

From pulmonary function testing and spirometry to bronchoscopy, E/M services, and chronic respiratory disease management, pulmonary practices must manage complex coding and documentation requirements.

By improving charge capture, coding accuracy, medical-necessity documentation, authorization management, denial prevention, A/R follow-up, and underpayment recovery, pulmonary practices can strengthen reimbursement without compromising patient care.

With specialized pulmonary billing support from RMB, practices can spend less time dealing with payer requirements and more time focused on what matters most—helping patients breathe better and live healthier lives.