Search all medical codes

Peak expiratory flow rate meter, hand held

HCPCS code

Name of the Procedure:

Common Name(s): Peak Flow Meter

Technical/Medical Term: Peak Expiratory Flow Rate Meter, Hand Held (HCPCS Code A4614)


A peak flow meter is a small, handheld device that measures how well air moves out of your lungs. It is commonly used to monitor and manage asthma or other respiratory conditions by tracking the peak expiratory flow rate (PEFR).


A peak flow meter helps monitor lung function for individuals with asthma or other respiratory disorders. By regularly measuring and recording peak flow, healthcare providers and patients can detect early signs of a flare-up, adjust medications, and prevent respiratory crises. The goal is to manage symptoms effectively and maintain optimal lung function.


  • Asthma
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Shortness of breath
  • Wheezing
  • Coughing
  • Monitoring lung function in response to treatment


  • No specific preparation is required for using a peak flow meter.
  • Patients should familiarize themselves with the device and its usage instructions.

Procedure Description

  1. Preparation:

    • Ensure the peak flow meter is clean and zeroed before use.
    • Standing or sitting upright enhances accuracy.
  2. Measurement:

    • Take a deep breath in, filling your lungs completely.
    • Place the mouthpiece in your mouth, sealing your lips tightly around it.
    • Blow out as hard and fast as possible in a single breath.
  3. Recording:

    • Note the reading on the meter.
    • Repeat the process three times for accuracy and record the highest reading.
  4. Monitoring:

    • Keep a diary of peak flow readings for ongoing monitoring.
    • Compare readings to your personal best or action plan thresholds.


  • Each measurement session takes approximately 2-5 minutes.


  • Home
  • Outpatient clinic
  • School or workplace (for routine monitoring)


  • The procedure is typically self-administered by the patient.
  • Nurses, respiratory therapists, or doctors may provide initial training and oversight.

Risks and Complications

  • Generally, there are no risks associated with using a peak flow meter.
  • Rarely, improper use may lead to incorrect readings affecting lung management plans.


  • Provides an early warning of breathing issues.
  • Helps maintain control over asthma and other respiratory conditions.
  • Enables personalized treatment adjustments.
  • Can prevent emergency situations by allowing timely medical intervention.


  • No recovery period needed as it’s a non-invasive procedure.
  • Continuous regular use is recommended for optimal monitoring.


  • Spirometry, conducted in a clinical setting, offers a more comprehensive lung function assessment.
  • Pulse oximetry can measure the oxygen level in the blood.
  • Each alternative has its benefits but may not offer the convenience and immediacy of a peak flow meter for daily use.

Patient Experience

  • Most patients find peak flow meters easy to use.
  • Regular daily monitoring may seem cumbersome but becomes routine.
  • Patients typically do not experience any pain; discomfort might arise only if the device isn’t used correctly.
  • Healthcare providers might offer tips to make the use more comfortable and efficient.

Similar Codes