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    v1.0.31
    OpenPayerBilling CodesMedical And Surgical SuppliesHCPCS hcpcs-a7003-small-volume-nebulizer-administration-set
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    HCPCS Level II A7003: Small-Volume Pneumatic Nebulizer Administration Set

    HCPCS Level II code A7003 describes a disposable administration set for a small-volume, nonfiltered pneumatic nebulizer used to deliver aerosolized medications; the service type is nebulizer administration set supply and the typical site of service is outpatient or home respiratory therapy where short-term nebulized treatments are provided.

    For related coverage guidance, see recent payer policy updates: Diabetic Supplies, Radiofrequency Ablation for Thyroid Nodules, Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Idaho Only).

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult or pediatric outpatient with acute or chronic respiratory symptoms—such as asthma exacerbation, chronic obstructive pulmonary disease (COPD) flare, bronchiolitis, or acute bronchitis—requiring short-acting bronchodilator or nebulized medication delivery. The patient presents to an urgent care clinic, emergency department, hospital observation unit, or ambulatory pulmonary clinic. After clinical assessment (vital signs, lung auscultation, pulse oximetry), the clinician orders a nebulized medication (e.g., albuterol, ipratropium, hypertonic saline) for inhalation. A respiratory therapist or trained nurse assembles a disposable administration set with a small-volume, nonfiltered pneumatic nebulizer (A7003), connects it to an oxygen source or compressor, places the mouthpiece or mask on the patient, and delivers the prescribed treatment while monitoring response and oxygen saturation. Documentation includes indication, medication and dose, duration of nebulization, device used (A7003), patient tolerance, and any changes in respiratory status. Typical sites of service are urgent care, emergency department, inpatient wards, observation units, and outpatient pulmonary clinics.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    94640Pressurized or non-pressurized inhalation treatment for acute airway obstruction or for sputum induction for diagnostic purposes (e.g., nebulizer, metered dose inhaler, DPI)Commonly billed for the therapeutic nebulization session performed using the administration set A7003.
    94664Demonstration and/or evaluation of patient utilization of an aerosol generator, nebulizer, metered dose inhaler, or IPPB deviceBilled when education or return-demonstration of nebulizer technique is performed with the patient using A7003.
    94620Pulmonary function testing—the administration of bronchodilator for testing (administration only)May be used when nebulized bronchodilator is given as part of spirometry testing protocols.
    94070Bronchospasm evaluation by peak flow measurement or spirometry (not commonly billed separately with nebulizer but relevant in clinical workflow)Used before or after nebulized treatment to document objective change in airflow.
    36415Collection of venous blood by venipunctureOften performed in ED or inpatient settings when lab monitoring is required during respiratory treatment (e.g., blood gases, electrolytes).

    Related Modifiers

    7 rows

    ModifierDescriptionWhen to Use
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    2084P0800X
    363L00000X
    261QR0208X
    2084P0005X
    282NR1301X
    282J00000X
    261QF0050X
    363LC1500X

    Related ICD-10-CM Codes

    27 rows

    ICD-10-CM CodeDescription
    B34.9Viral infection, unspecified
    J00Acute nasopharyngitis [common cold]
    J12.9Viral pneumonia, unspecified
    J15.9Unspecified bacterial pneumonia
    J18.9Pneumonia, unspecified organism
    J20.8Acute bronchitis due to other specified organisms
    J20.9Acute bronchitis, unspecified
    J21.9Acute bronchiolitis, unspecified
    J42Unspecified chronic bronchitis
    J43.9Emphysema, unspecified

    Showing 1–10 of 27

    Related Payer Policy Updates

    Specialty: Endocrinology1 / 3

    10 rows

    PolicyPayerEffective Date
    Diabetic SuppliesCigna2026-10-15
    Radiofrequency Ablation for Thyroid NodulesCigna2026-10-15
    Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Idaho Only)UnitedHealthcare2026-10-01
    Tzield (teplizumab-mzwv) CoverageUnitedHealthcare2026-10-01
    Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Indiana Only)UnitedHealthcare2026-10-01
    Medical Necessity Guidelines Insulin PumpsMass General Brigham Health Plan2026-10-01
    Medical Necessity Guidelines: Continuous Glucose MonitorsMass General Brigham Health Plan2026-10-01
    Continuous Glucose MonitoringAmbetter Nevada2026-10-01
    Salivary Hormone TestingOscar Health2026-10-01
    Bone Turnover Markers TestingOscar Health2026-10-01

    Related Codes

    HCPCS-A4206-STERILE-SYRINGE-1CC-NEEDLE

    HCPCS A4206: Syringe with Needle, 1 cc or Less, Sterile

    HCPCS-A4207-STERILE-2CC-SYRINGE-WITH-NEEDLE

    HCPCS Level II A4207: Syringe with Needle, Sterile 2 cc

    HCPCS-A4208-STERILE-3CC-SYRINGE-WITH-NEEDLE

    HCPCS Level II A4208: Syringe with Needle, Sterile 3 cc

    HCPCS-A4209-STERILE-SYRINGE-WITH-NEEDLE-5CC-OR-GREATER

    HCPCS Level II A4209: Syringe with Needle, Sterile 5 cc or Greater

    HCPCS-A4210-NEEDLE-FREE-INJECTION-DEVICE

    HCPCS Level II A4210: Needle-free Injection Device, Each

    HCPCS-A4211-SUPPLIES-SELF-ADMINISTERED-INJECTIONS

    HCPCS Level II A4211: Supplies for Self-Administered Injections

    HCPCS-A4212-NON-CORING-NEEDLE-STYLET-CATHETER-ACCESS-SUPPLY

    HCPCS Level II A4212: Non-coring Needle or Stylet with/without Catheter

    HCPCS-A4213-STERILE-SYRINGE-20CC-OR-GREATER

    HCPCS Level II A4213: Syringe, Sterile, 20 cc or Greater, Each

    HCPCS-A4215-STERILE-NEEDLE-SINGLE-EACH

    HCPCS Level II A4215: Needle, Sterile, Any Size

    HCPCS-A4216-STERILE-DILUENT-FLUSH-10ML

    HCPCS Level II A4216: Sterile Diluent/Flush, 10 ml

    Showing 1–10 of 633

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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