HCPCS code C1781: Mesh (implantable)

Properly use and bill HCPCS code C1781 by meeting the documentation and billing requirements from our short guide.

## **What is HCPCS code C1781?** HCPCS code C1781, defined as Mesh (implantable), is a Level II HCPCS (Healthcare Common Procedure Coding System) code, also known as an alphanumeric code. The C-series of HCPCS codes are primarily used by Outpatient Prospective Payment System (OPPS) hospitals for reporting facility (technical) services. The code is categorized under Outpatient PPS and Assorted Devices, Implants, and Systems, and is generally considered to be of Moderate complexity. The surgical device or mesh mentioned is permanently left inside the patient's body after a procedure. It is most commonly used in procedures like hernia repairs (inguinal, umbilical, ventral) and for pelvic organ prolapse to reinforce weakened or damaged tissue.

## **HCPCS code C1781 documentation requirements** Proper documentation is essential to ensure accurate billing and reimbursement for the implantable mesh. - **Implant requirement**: Documentation must confirm that the mesh is a true implantable device—meaning it remains in the patient's body upon discharge from the procedure. If the mesh is inserted but removed before the procedure's termination, the implant code would not be reportable. - **Operative report**: The operative report is the primary source of truth. It must clearly detail the surgical procedure performed (e.g., hernia repair), explicitly state the implantation of the surgical mesh, and include the name of the product, manufacturer, and product number of the mesh used to substantiate the use of the code. - **Link to procedure**: For facility billing in a hospital outpatient setting, Medicare may require the reporting of a device-related HCPCS Level II code (like C1781) on the claim for a device-intensive procedure to ensure appropriate cost capture.

## **C1781 billing requirements** C1781 is billed by the facility (hospital, outpatient, or Ambulatory Surgical Center/ASC) for the cost of the mesh product itself, not by the physician or doctor for the application. - **Co-billing with CPT**: C1781 is billed in conjunction with the appropriate CPT code for the surgical procedure. For instance, for a hernia repair with mesh, the CPT code for the repair (e.g., CPT 49591 for an initial abdominal hernia repair) is reported along with the HCPCS code C1781 for the mesh device. - **Same claim/same date**: The CPT code for the procedure and the HCPCS code for the implantable device must be submitted on the same claim and for the same date of service. If the procedure is submitted without the required device code, the procedure may be denied. - **Revenue code:** For outpatient claims, if a revenue code indicating the use of an implant (typically Revenue Code 0278 for Medical-Surgical Supplies/Implants) is submitted, a corresponding HCPCS code (like C1781) must be reported as well.

## **Other relevant codes** - **C1780**: Lens, intraocular (new technology) - **C1782**: Morcellator (implantable) - **C1889**: Implantable/insertable device, not otherwise classified - **C1713**: Anchor/screw for surgical fixation (implantable) - **C1760**: Closure device, vascular (implantable/insertable) - **C1782**: Morcellator (insertable)Assorted Devices/Implants - **C1889**: Implantable/insertable device, not otherwise classified

Frequently asked questions

The facility (Hospital Outpatient Department or ASC) bills C1781 to report the cost of the mesh device used.

No. While required for proper reporting and to capture costs for future payment setting (especially under Medicare OPPS), the reimbursement for the device may be packaged into the payment for the primary surgical procedure and may not result in a separate payment.

CPT codes (e.g., 49591) describe the surgical procedure (the work of implanting the mesh). HCPCS codes (e.g., C1781) describe the device/product (the mesh itself). Both are typically required on the claim.