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Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap

HCPCS code

Nasal Interface (Mask or Cannula Type) used with Positive Airway Pressure Device

Name of the Procedure:

  • Common Names: Nasal CPAP Mask, Nasal BiPAP Mask, Nasal Cannula
  • Technical Terms: Nasal Interface for Positive Airway Pressure Therapy (HCPCS A7034)


The Nasal Interface, typically a mask or cannula, is used in conjunction with positive airway pressure devices such as CPAP (Continuous Positive Airway Pressure) or BiPAP (Bilevel Positive Airway Pressure). This procedure assists individuals with breathing difficulties by ensuring a constant flow of air to keep airways open.


Medical Conditions Addressed:
  • Obstructive Sleep Apnea (OSA)
  • Central Sleep Apnea (CSA)
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Other respiratory ailments requiring positive airway pressure
Goals/Expected Outcomes:
  • To maintain open airways during sleep
  • Improve oxygenation and ventilation
  • Reduce symptoms of sleep apnea like snoring and daytime sleepiness
  • Enhance quality of sleep and overall health


  • Diagnosed sleep apnea (moderate to severe)
  • Chronic respiratory conditions necessitating continuous or bilevel positive airway pressure
  • Snoring combined with other symptoms like excessive daytime sleepiness


  • No significant pre-procedure preparation is typically required.
  • A sleep study (polysomnography) may be conducted to determine the necessity and settings for CPAP or BiPAP.
  • Patients might need training on proper use and maintenance of the nasal interface and device.

Procedure Description

  • Fitting of the nasal interface is done with the patient seated or lying down.
  • A nasal mask or cannula is placed over the nose, secured gently with a headstrap if necessary.
  • The interface is connected to the tubing of the CPAP or BiPAP machine.
  • The device is turned on, and settings are adjusted to the prescribed levels of air pressure.
  • Instructions on nightly use, cleaning, and maintenance of the device and interface are provided.
Tools/Equipment Used:
  • Nasal mask or cannula
  • Headstrap (if needed)
  • CPAP/BiPAP machine with tubing
Anesthesia or Sedation:
  • Not required


  • The fitting procedure takes approximately 30 minutes.
  • The use of the nasal interface continues as part of nightly treatment, typically 6-8 hours during sleep.


  • Outpatient clinic or sleep center
  • Sometimes at home under the guidance of a healthcare provider


  • Respiratory therapist
  • Sleep specialist
  • Trained medical staff

Risks and Complications

Common Risks:
  • Nasal dryness or congestion
  • Skin irritation from the mask
  • Discomfort or air leaks
Rare Risks:
  • Sinus infections
  • Nosebleeds
  • Claustrophobia or anxiety
  • Use of humidification with the device
  • Regular adjustment and proper fitting of the mask
  • Skin care and nasal sprays


  • Improved breathing during sleep
  • Reduction in apneic events and snoring
  • Enhanced quality of sleep and daytime alertness
  • Potential long-term health benefits such as improved heart function


  • Generally, no recovery period is needed.
  • Patients are encouraged to use the device every night.
  • Follow-up appointments to monitor progress and adjust settings.


  • Oral appliances (mandibular advancement devices)
  • Surgical options (e.g., uvulopalatopharyngoplasty)
  • Lifestyle changes (weight loss, positional therapy)
Pros and Cons:
  • CPAP therapy is non-invasive and effective but requires nightly use.
  • Surgical options might provide a permanent solution but come with associated risks and recovery time.

Patient Experience

  • Initial discomfort while adjusting to the nasal interface.
  • Possible feeling of claustrophobia or nasal dryness.
  • Pain management includes humidifiers and regular fitting adjustments.
  • With time, most patients report significant improvement in sleep quality and daytime functioning.

Medical Policies and Guidelines for Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap

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