A7003 is actually an HCPCS code, not a CPT code. It refers to a disposable administration set with a small-volume, non-filtered pneumatic nebulizer used in respiratory therapy to deliver inhaled medication. It may be used with ultrasonic nebulizers, metered dose inhalers, or large volume nebulizers if clinically appropriate.

HCPCS Code A7003: Administration Set, With Small Volume Nonfiltered Pneumatic Nebulizer, Disposable
HCPCS Code A7003 covers disposable small-volume non-filtered pneumatic nebulizers for COPD, cystic fibrosis, and other respiratory conditions.
Frequently asked questions
Qualifying diagnoses include respiratory conditions such as asthma, chronic obstructive pulmonary disease (COPD), bronchitis, chronic bronchitis, cystic fibrosis, aeruginosa pneumonia failing, severe allergies affecting breathing, and other obstructive pulmonary diseases.
Diagnosis codes depend on the patient's respiratory condition; common ICD-10 codes include those for asthma (J45.x), COPD (J44.x), bronchitis (J40-J42), and cystic fibrosis (E84.x). The exact code should justify medical necessity for nebulizer use as part of drug treatment or medication therapy.
There is no specific CPT code for saline nebulizer treatment alone. The procedure code 94640 is used for nebulizer administration of medication, including saline or other inhalation solutions, whether from a small volume ultrasonic nebulizer, large volume ultrasonic nebulizer, or other FDA approved final product devices.
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