Summary & Overview
HCPCS Q4146: Tensix per Square Centimeter, Add-On Supply
HCPCS Level II code Q4146 identifies Tensix billed per square centimeter as an add-on supply used alongside a primary procedure. This code matters nationally because add-on supply codes affect facility and professional billing accuracy, influence payment calculations for procedures requiring specialized topical products, and impact coding workflows in outpatient and ambulatory procedural settings. Proper use of this HCPCS Level II code ensures supply utilization is documented separately and supports transparent claims processing.
Key payers covered include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code’s clinical purpose and typical sites of service, an overview of payer coverage considerations, and the types of benchmarks and policy topics usually relevant for add-on supply codes such as coding guidance, billing placement, and reimbursement policy updates. The publication outlines how this code integrates with procedure-level billing and highlights areas where policy clarification or payer edits commonly arise.
This summary is intended for coding professionals, billing managers, and clinicians seeking a national-level briefing on the role and implications of HCPCS Level II code Q4146.
Billing Code Overview
HCPCS Level II code Q4146 represents Tensix, billed per square centimeter as an add-on supply that is reported separately in addition to a primary procedure. The service type is a topical/dermal therapeutic supply used in procedures requiring application of this product, and the typical site of service is ambulatory procedural settings or outpatient clinics where wound care, dermatologic procedures, or minor surgical adjunctive treatments occur.
Service specifics and clinical context: Data not available in the input.
Clinical & Coding Specifications
Clinical Context
Tensix is a topical wound care product billed per square centimeter (Q4146) as an add-on, used in advanced wound management to augment primary debridement or grafting procedures. A typical patient is an adult with a non-healing lower-extremity ulcer (for example, a diabetic foot ulcer) who presents to an outpatient wound care center or hospital-based clinic for evaluation and treatment. The clinical workflow includes assessment of wound size and depth, cleansing and selective or sharp debridement of necrotic tissue (often billed separately under a primary procedure), measurement of the wound surface area in square centimeters, and application of Tensix to the wound bed. Documentation includes wound measurements, indication for use (e.g., stalled granulation, exposed tendon), concurrent primary procedure code(s), quantity of Tensix applied in square centimeters, and any applicable modifiers (for example, modifier 52 for reduced services if a partial application was performed). Typical sites of service are outpatient wound care clinics, ambulatory surgery centers, hospital outpatient departments, and inpatient hospital beds when used as an adjunct to a primary wound procedure. The service is provided by wound care specialists, podiatrists, vascular surgeons, or plastic surgeons with appropriate support from nursing and wound care clinicians who document pre- and post-application wound status and patient tolerance.
Coding Specifications
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