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The procedure described by CPT® Code 0446T involves the creation of a subcutaneous pocket for the insertion of an implantable interstitial glucose sensor, which plays a crucial role in diabetes management. This sensor is designed to continuously monitor glucose levels in the interstitial fluid, providing real-time data that is essential for individuals managing diabetes. The sensor utilizes a fluorescent glucose-indicating polymer that reacts to glucose levels, allowing for accurate monitoring. A transmitter, worn externally over the sensor, powers the device and collects current glucose readings. It also tracks the rate and direction of glucose level changes and assesses the likelihood of these levels exceeding predetermined high or low thresholds. The data collected by the transmitter is then sent to a smartphone application, enabling the wearer to monitor their glucose levels conveniently and effectively. To perform the insertion of the glucose sensor, a local anesthetic is first administered to the upper arm to minimize discomfort. A small incision, typically measuring between 5 to 8 mm, is made in the skin, and a blunt dissector is employed to create a pocket within the subcutaneous tissue. Prior to insertion, the sensor is submerged in a saline solution, which helps to prepare it for implantation. Using a specialized insertion tool, the sensor is placed into the created pocket, and the incision is subsequently closed over it. The sensor is then linked to the patient transmitter, which activates and powers the device. Additionally, the patient receives training on how to use the glucose monitoring system effectively. In cases where the sensor needs to be removed, the procedure involves injecting a local anesthetic into the area, followed by making a small incision at one end of the device. Any scar tissue surrounding the sensor is carefully debrided, and the device is grasped with a hemostat for removal. If a new sensor is to be inserted, a different anatomical site is selected, and the insertion procedure is repeated, ensuring that the patient continues to receive accurate glucose monitoring. Overall, CPT® Code 0446T encapsulates the comprehensive process of creating a subcutaneous pocket, inserting the glucose sensor, activating the system, and providing necessary patient training.
© Copyright 2025 Coding Ahead. All rights reserved.
The procedure associated with CPT® Code 0446T is indicated for patients requiring continuous glucose monitoring as part of their diabetes management plan. The following conditions may warrant the use of this procedure:
The procedure for the insertion of the implantable interstitial glucose sensor involves several detailed steps to ensure proper placement and functionality of the device:
After the procedure, patients are typically monitored for any immediate complications related to the insertion site. They are advised on care for the incision to prevent infection and ensure proper healing. Patients should be informed about the expected recovery process, which generally involves minimal downtime. They may resume normal activities shortly after the procedure, but should avoid strenuous activities that could impact the insertion site. Follow-up appointments may be scheduled to assess the functionality of the glucose sensor and to provide ongoing support in managing their diabetes effectively.
| Short Descr | INSJ IMPLTBL GLUCOSE SENSOR | Medium Descr | CRTJ SUBQ INSJ IMPLTBL GLUCOSE SENSOR SYS TRAIN | Long Descr | Creation of subcutaneous pocket with insertion of implantable interstitial glucose sensor, including system activation and patient training | Status Code | Active Code | Global Days | 000 - Endoscopic or Minor Procedure | PC/TC Indicator (26, TC) | 0 - Physician Service Code | Multiple Procedures (51) | 2 - Standard payment adjustment rules for multiple procedures apply. | Bilateral Surgery (50) | 0 - 150% payment adjustment for bilateral procedures does NOT apply. | Physician Supervisions | 09 - Concept does not apply. | Assistant Surgeon (80, 82) | 1 - Statutory payment restriction for assistants at surgery applies to this procedure... | Co-Surgeons (62) | 0 - Co-surgeons not permitted for this procedure. | Team Surgery (66) | 0 - Team surgeons not permitted for this procedure. | Diagnostic Imaging Family | 99 - Concept Does Not Apply | APC Status Indicator | Procedure or Service, Multiple Reduction Applies | ASC Payment Indicator | Office-based surgical procedure added to ASC list in CY 2008 or later with MPFS nonfacility PE RVUs; payment based on OPPS relative payment weight. | Berenson-Eggers TOS (BETOS) | P5E - Ambulatory procedures - other | MUE | 1 |
| 59 | Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25. | GZ | Item or service expected to be denied as not reasonable and necessary |
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| 2017-01-01 | Added | Added |
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