Summary & Overview
HCPCS S1035: Invasive Subcutaneous Sensor for Artificial Pancreas Device System
HCPCS Level II code S1035 identifies a disposable invasive subcutaneous sensor used with an artificial pancreas device system. As automated insulin delivery systems expand, this sensor component is a critical supply item enabling continuous glucose sensing and closed-loop insulin adjustments. Nationally, coverage and payment policies for device components such as S1035 affect access to artificial pancreas therapies and the out-of-pocket costs patients face.
Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for the sensor, common payer coverage patterns, and the types of benchmarks and policy updates that typically influence coding and payment for disposable glucose sensors. The publication summarizes where S1035 fits in benefit design, typical sites of service, and the service classification as a durable medical device accessory or diabetes monitoring supply.
This summary prepares readers to review benchmarks, payer-specific coverage nuances, and policy developments that can impact procurement and clinical workflows for artificial pancreas device systems and their consumable sensors.
Billing Code Overview
HCPCS Level II code S1035 describes a sensor; invasive (e.g., subcutaneous), disposable, for use with artificial pancreas device system. This item is a disposable subcutaneous sensor component intended to measure interstitial glucose and interface with an artificial pancreas device system to support automated insulin delivery.
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Service type: Durable medical device accessory / diabetes monitoring supply
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Typical site of service: Outpatient ambulatory settings, home use, or other non-acute care settings where patients use an artificial pancreas device system
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Clinical & Coding Specifications
Clinical Context
A 42-year-old adult with type 1 diabetes mellitus is managed with an integrated artificial pancreas device system that automates insulin delivery based on continuous glucose sensing. The patient presents to an outpatient diabetes clinic for routine replacement of the disposable subcutaneous sensor component of the system. The clinic nurse prepares the device, performs a brief skin inspection at the planned insertion site, performs aseptic technique, inserts the disposable invasive sensor subcutaneously, programs the receiver/controller to recognize the new sensor, and provides brief device-specific education on site care and sensor troubleshooting. The sensor is single-use and billed separately from durable medical equipment for the controller and insulin pump. Typical workflow includes device supply verification, site assessment, sensor insertion (disposable), device pairing and calibration as needed, documentation of lot numbers and informed consent, and scheduling of follow-up remote or in-person device checks.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
AS | Clinic or ambulatory surgical center (ASC) facility | Use when the service is furnished in an ambulatory surgical center setting |
CO | Services related to a clinical trial |