Summary & Overview
HCPCS E0441: Stationary Gaseous Oxygen, 1-Month Supply
HCPCS Level II code E0441 denotes a one-month supply of stationary gaseous oxygen intended for ongoing respiratory support in home or long-term care settings. The code is used by durable medical equipment suppliers and clinical providers to bill for monthly oxygen contents separate from delivery equipment. Nationally, this code matters because oxygen therapy is a common, long-term service for patients with chronic respiratory disease and home oxygen billing represents a recurring spend category across public and private payers.
Key payers covered in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find: an explanation of what the code represents and typical sites of service; common billing and supply considerations for monthly stationary oxygen contents; and a concise overview of payer coverage patterns and benchmarking topics relevant to suppliers and payers. The publication also outlines clinical context for oxygen therapy and highlights policy and billing elements that affect monthly supply claims.
The content is designed to help billing professionals, durable medical equipment suppliers, payers, and policy analysts understand how E0441 is applied in practice, what to expect in payer coverage frameworks, and which operational issues most often affect reimbursement for stationary gaseous oxygen supplies.
Billing Code Overview
HCPCS Level II code E0441 describes stationary oxygen contents, gaseous, 1 month's supply = 1 unit. This supply-oriented code represents provision of gaseous oxygen intended for stationary (home or facility-based) use over a one-month period. Service type: Durable Medical Equipment / Oxygen Supply.
Typical site of service: Home or long-term care facility where stationary oxygen storage and delivery are required for ongoing respiratory support.
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Clinical & Coding Specifications
Clinical Context
A typical scenario involves an adult patient with chronic hypoxemic respiratory failure due to advanced chronic obstructive pulmonary disease (COPD) or interstitial lung disease who requires stationary gaseous oxygen delivered to the home. After outpatient pulmonary clinic evaluation and arterial blood gas or oximetry demonstrating chronic resting hypoxemia (for example, PaO2 ≤55 mm Hg or SpO2 ≤88%, or PaO2 56–59 mm Hg with cor pulmonale or polycythemia), the clinician orders domiciliary stationary oxygen contents as part of durable medical equipment (DME) services. The supplier bills E0441 in monthly units (one unit equals a 1-month supply of gaseous oxygen contents). Typical workflow: outpatient clinician documents medical necessity and supporting oxygenation data in the chart, places a DME order specifying E0441 and duration, and the DME supplier coordinates delivery, obtains necessary prior authorization from payors (for example, Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, BUCA, Medicare), and provides delivery and patient education on safe home oxygen use. Follow-up occurs in clinic or via home health to verify ongoing need and adjust therapy. The usual site of service is the patient’s residence; service type is durable medical equipment – stationary gaseous oxygen contents billed monthly.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 |