Summary & Overview
HCPCS Q4285: Nudyn dl Mesh, Per Square Centimeter (Add-on)
HCPCS Level II code Q4285 represents an add-on billing code for Nudyn dl or Nudyn dl mesh billed per square centimeter, used when a mesh product is implanted in addition to a primary surgical procedure. As an HCPCS Level II supply code for implantable surgical mesh, it matters nationally because device-specific add-on codes affect surgical episode costing, device tracking, and payer coverage determinations across inpatient and outpatient surgical settings.
Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code's clinical role as an implantable mesh supply billed by area, typical sites of service such as the operating room and ambulatory surgical center, and the common modifiers associated with billing this add-on supply. The publication outlines what to expect in payer coverage considerations, common documentation and coding practices for add-on implantable supplies, and where this code fits within surgical device billing workflows.
This summary provides national context without state-specific details. Data not available in the input includes payer-specific reimbursement amounts, associated taxonomies, and ICD-10 diagnosis mappings. The reader will learn the code's purpose, common billing scenarios, and which stakeholders typically engage with this HCPCS Level II add-on supply code.
Billing Code Overview
HCPCS Level II code Q4285 designates Nudyn dl or nudyn dl mesh, billed per square centimeter as an add-on item to be listed separately in addition to a primary procedure. The description indicates this is a medical implantable mesh product provided in measured surface area units.
Service type: Implantable surgical mesh supply (per sq cm), add-on
Typical site of service: Operating room or ambulatory surgical center, where the mesh is implanted during a primary surgical procedure.
Clinical & Coding Specifications
Clinical Context
A patient undergoing pelvic organ prolapse or urinary incontinence repair requires placement of a biologic or synthetic reinforcing mesh patch measured and billed by area. Typical patient is a female aged 45–75 with symptomatic pelvic organ prolapse (e.g., cystocele, rectocele, or apical prolapse) or recurrent stress urinary incontinence who has elected surgical correction after conservative therapy failed. The intraoperative workflow includes: preoperative evaluation and counseling by a urogynecologist or general gynecologist with urogynecology expertise; administration of anesthesia in an operating room or ambulatory surgical center; surgical exposure and dissection of the affected compartment; sizing and placement of the Nudyn dl or Nudyn dl mesh to reinforce native tissue or support a sling; trimming of the mesh to required square centimeters; secure fixation as indicated; hemostasis and layered closure; and postoperative recovery with standard wound and voiding assessments. Billing uses the add-on HCPCS Level II code Q4285 to report the mesh area in square centimeters in addition to the primary repair procedure. Typical sites of service are hospital outpatient departments and ambulatory surgical centers. Common clinical documentation elements include indication for repair, mesh type and manufacturer, measured area implanted (cm2), fixation method, concurrent procedures, and any intraoperative complications influencing modifier reporting.
Coding Specifications
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