Summary & Overview

HCPCS A4615: Nasal Cannula for Oxygen Delivery

HCPCS Level II code A4615 identifies a nasal cannula, a durable medical supply used to deliver supplemental oxygen or airflow to patients. Nationally, this code matters because nasal cannulae are a fundamental component of oxygen therapy across care settings, supporting chronic respiratory disease management, post-operative recovery, and acute hypoxemic events. Accurate coding ensures appropriate supply tracking, billing consistency, and patient access to needed respiratory equipment.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical context, where the device is typically used, and which payers commonly cover such supplies. The publication provides benchmarks for utilization and coverage patterns where available, summarizes relevant policy or coverage considerations, and situates A4615 within commonly billed respiratory supply lines.

This resource is intended for billing professionals, durable medical equipment (DME) suppliers, and health policy analysts seeking a national-level briefing on HCPCS Level II code A4615, including coding implications, payer coverage context, and operational notes for supply management. Data not available in the input will be noted explicitly in relevant sections.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareA4615HCPCS Level IInasal cannulaoxygen therapydurable medical equipmentrespiratory supplymedical billingDME coding

Billing Code Overview

HCPCS Level II code A4615 describes a nasal cannula device used to deliver supplemental oxygen or airflow to a patient through the nostrils. The code represents the supply item itself rather than a specific clinical procedure.

Service type: Durable medical supply for oxygen delivery and respiratory support.

Typical site of service: Use is most common in home health, outpatient clinics, and inpatient hospital settings where patients require supplemental oxygen or low-flow respiratory support.

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult presenting to an outpatient infusion center, emergency department, or inpatient ward with hypoxemia from respiratory illnesses such as chronic obstructive pulmonary disease exacerbation, community-acquired pneumonia, congestive heart failure with pulmonary edema, or acute viral bronchiolitis. The clinical workflow begins with assessment of oxygenation (pulse oximetry, arterial blood gas as needed) and decision to provide low-flow supplemental oxygen. A nurse or respiratory therapist selects an appropriately sized nasal cannula (A4615 - Cannula, nasal), inspects it for integrity, connects it to an oxygen source or concentrator, sets flow per provider orders (commonly 1–6 L/min for adults), and applies it to the patient’s nares securing tubing behind the ears. Ongoing monitoring includes reassessment of oxygen saturation, respiratory rate, and skin integrity where tubing contacts the ears and face. Documentation includes device type (A4615), flow rate, duration of use, clinical indications, and patient tolerance. Replacement is performed if the cannula becomes soiled, kinked, or if prolonged therapy increases infection risk. Typical sites of service are ambulatory clinics, emergency departments, inpatient hospital floors, long-term care facilities, and home health settings when supplied by durable medical equipment vendors.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier; standard reporting	Use when no modifier applies and service is routine.
`26`	Professional component	Use when reporting only the professional component of a related diagnostic service (rare for `A4615`).
`52`	Reduced services	Use if a lesser supply or shortened duration of device use is provided.
`53`	Discontinued procedure	Use if cannula application was started but discontinued due to patient or clinical reasons.
`59`	Data not available in the input.	Data not available in the input.
`62`	Two surgeons	Use when two qualified providers are involved in a complex airway or specialized oxygen delivery procedure requiring concurrent expertise.
`78`	Return to OR for related procedure	Use if patient returns to the operating room for a procedure related to airway management following initial intervention.
`80`	Assistant at surgery	Use if a surgical assistant is billed during an airway or surgical procedure associated with oxygen delivery.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist billing under their own NPI	Use when advanced practice clinicians supply or manage the device under their own billing.
`NU`	New equipment	Use when reporting newly furnished equipment versus replacement.
`QK`	Medical direction of two or more assistants	Use in surgical settings where medical direction applies to assistants involved with airway procedures.
`QX`	Certified registered nurse anesthetist (CRNA) service	Use when CRNA provides services related to anesthesia and airway management.
`QY`	Medical direction by physician for CRNA	Use when physician directs a CRNA in airway procedures.
`TC`	Technical component	Use when billing only the technical component of a related service or device delivery.

Taxonomy Code	Specialty	Notes
`2285P0800X`	Respiratory Therapist	Primary provider for oxygen device selection, application, and monitoring in hospitals and clinics.
`207RC0000X`	Pulmonology	Medical specialists who order and manage supplemental oxygen therapy for chronic and acute respiratory disease.
`163W00000X`	Emergency Medicine	Providers who initiate oxygen therapy for acute hypoxemia in emergency settings.
`261QM0800X`	Nurse Practitioner	Advanced practice clinicians who assess patients and order/manage oxygen therapy.
`364S00000X`	Surgery - General	Surgeons involved when oxygen delivery is part of perioperative airway management.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`J44.1`	Chronic obstructive pulmonary disease with (acute) exacerbation	Common indication for supplemental oxygen delivered via nasal cannula.
`J18.9`	Pneumonia, unspecified organism	Hypoxemia from pneumonia often managed with nasal cannula oxygen.
`I50.9`	Heart failure, unspecified	Pulmonary edema causing hypoxemia may require low-flow oxygen by nasal cannula.
`J96.00`	Acute respiratory failure, unspecified whether with hypoxia or hypercapnia	May require escalation from nasal cannula to higher-level support; cannula used for mild hypoxemia.
`J21.0`	Acute bronchiolitis due to respiratory syncytial virus	Pediatric diagnosis frequently managed with nasal cannula oxygen for hypoxemia.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`31500`	Intubation, endotracheal, emergency procedure	Performed when low-flow nasal cannula oxygen (`A4615`) is inadequate and advanced airway is required.
`99283`	Emergency department visit, moderate severity	Common encounter code for patients who receive oxygen therapy for acute respiratory issues in the ED prior to or during cannula use.
`94640`	Pressurized or non-pressurized inhalation treatment for acute airway obstruction; nebulizer, inhalation treatment	Frequently performed alongside nasal cannula oxygen to deliver bronchodilators or moist therapies.
`94010`	Spirometry, including graphic record, total and timed vital capacity, expiratory flow rate measurement(s)	Pulmonary function testing used in outpatient evaluation that can precede decisions about long-term oxygen therapy.
`E1390`	Oxygen concentrator stationary (Note: HCPCS, not CPT)	Common durable medical equipment billed when long-term oxygen therapy is furnished and used with `A4615` nasal cannula.