Summary & Overview
HCPCS Level II A4606: Oxygen Probe for Oximeter, Replacement
HCPCS Level II code A4606 identifies a replacement oxygen probe used with oximeter devices to measure peripheral oxygen saturation. The code covers a common durable medical equipment (DME) component needed across clinical, home care and outpatient settings. Nationally, replacement oximeter probes affect device maintenance, DME inventory management, and procedural accuracy for pulse oximetry monitoring.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find an overview of payer coverage patterns, billing considerations for replacement DME components, and operational benchmarks relevant to reimbursement and supply management. The review highlights typical sites of service where A4606 is billed, coding context for replacement parts, and the implications for claims processing and documentation requirements.
This analysis provides practical context for billing staff, DME suppliers, and compliance teams: what A4606 represents, how payers commonly treat replacement oximeter probes, and what operational metrics and policy updates to monitor. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code A4606 represents an oxygen probe for use with an oximeter device, replacement. This item is a replaceable sensor component designed to measure peripheral oxygen saturation when connected to a compatible oximeter.
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Service Type: Durable medical equipment component, replacement part
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Typical Site of Service: Durable medical equipment settings, outpatient clinics, home health care environments, and other sites where oximetry devices are used
Clinical & Coding Specifications
Clinical Context
A patient with a prescription for home pulse oximetry presents to a durable medical equipment (DME) supplier to obtain replacement components for their pulse oximeter. The supplier confirms the existing oximeter is functional but the reusable oxygen probe (sensor) has worn tubing and intermittent signal loss. The DME clinician documents patient identity, device make/model, reason for replacement (wear/contamination/damage), and that a replacement oxygen probe is medically necessary to ensure accurate SpO2 monitoring at home. The supplier dispenses the replacement oxygen probe A4606, records the device serial number, and provides patient education on proper probe attachment, cleaning, and storage. The typical workflow includes verification of the original device prescription, confirmation of medical necessity (e.g., chronic hypoxemia, recent hospital discharge requiring home monitoring), capturing supplier invoice and manufacturer part number, and submission of the HCPCS Level II code A4606 to the payer with appropriate modifier(s) if applicable. Typical site of service is a durable medical equipment supplier or the patient’s home when delivered by the supplier.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier (default) | Use when no additional modifier applies to the item billed. |