Q4293 HCPCS: Reimbursement & Policy Benchmarks | OpenPayer

Summary & Overview

HCPCS Q4293: Access Service, Per Square Centimeter (Add-on)

HCPCS Level II code Q4293 is an add-on billing code used to report access-related services billed per square centimeter in addition to a primary procedure. As an add-on code, Q4293 captures incremental work or materials associated with access procedures that are measured by area rather than as standalone services. Nationally, accurate use of such add-on codes affects claims processing, reimbursement accuracy, and resource tracking for procedures that require supplemental access-related interventions.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of clinical context and billing intent for Q4293, typical sites of service where the code is applied, and operational considerations when appending the code to primary procedures. The publication summarizes available benchmarks and payer coverage patterns where provided and highlights gaps in publicly available coding guidance.

This summary provides clinicians, coders, and billing professionals with the essential context for when Q4293 is appropriate to report, what it represents clinically, and which major payers are relevant for coverage and claims submission considerations.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareQ4293HCPCS Level IIaccess procedureadd-on codeper square centimeterambulatory surgerybilling guidancemedical coding

Billing Code Overview

HCPCS Level II code Q4293 describes Acesso dl, per square centimeter (add-on, list separately in addition to primary procedure). This code represents an add-on service billed per square centimeter related to access procedures and is reported in addition to a primary procedure code when applicable.

Service Type: Access-related procedural add-on, measured per square centimeter

Typical Site of Service: Procedural settings where access-related interventions are performed, such as outpatient surgical suites, hospital operating rooms, or ambulatory procedure centers

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult or pediatric individual undergoing surgical placement of an implantable access device or revision of an existing device where area-based billing for device access is required. The add-on code Q4293 is billed per square centimeter of access device surface area in addition to a primary implantation or removal procedure. A realistic scenario: a 58-year-old with recurrent colorectal cancer requires placement of a long-term subcutaneous infusion port for chemotherapy. The interventional surgeon performs port pocket creation and subcutaneous tunnel; the facility bills the primary CPT for port placement and bills Q4293 as an add-on for the measured port access surface area. Typical clinical workflow includes preoperative evaluation, informed consent, device measurement, sterile implantation under local or general anesthesia, device testing, and documentation of the square-centimeter measurement in the operative report and charge ticket for accurate Q4293 billing.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier	When no modifier applies to the service.

HCPCS Q5144: Adalimumab‑aacf (Idacio) Injection, 1 mg

HCPCS-Q4224-HUMAN-HEALTH-FACTOR-10-AMNIOTIC-PATCH-PER-SQ-CM

HCPCS Q4224: Human Health Factor 10 Amniotic Patch, Per sq cm

HCPCS-Q4240-CORECYTE-TOPICAL-0-5CC

HCPCS Q4240: Corecyte Topical Biologic, per 0.5 cc

HCPCS-Q5007-HOSPICE-CARE-LONG-TERM-CARE-FACILITY

HCPCS Q5007: Hospice Care in Long Term Care Facility

HCPCS-Q4185-CELLESTA-FLOWABLE-AMNION-25MG-PER-CC

HCPCS Q4185: Cellesta Flowable Amnion, 25 mg/cc (per 0.5 cc)

HCPCS-Q4150-TOPICAL-WOUND-CARE-ADD-ON-PER-CM

HCPCS Q4150: Topical Wound Care Add-On, Per Square Centimeter

HCPCS-Q0180-DOLASETRON-ORAL-ANTI-EMETIC-CHEMOTHERAPY-SUBSTITUTE

HCPCS Q0180: Dolasetron 100 mg Oral Anti-emetic for Chemotherapy

HCPCS-Q0084-CHEMOTHERAPY-INFUSION-ADMINISTRATION-PER-VISIT

HCPCS Q0084: Chemotherapy Infusion Administration, Per Visit

HCPCS-Q4310-PROCENTA-100MG-PHARMACEUTICAL-SUPPLY

HCPCS Level II Q4310: Procenta, per 100 mg

HCPCS-Q4342-THERAMEND-PER-SQUARE-CENTIMETER

HCPCS Q4342: Theramend, Per Square Centimeter

Showing 1–10 of 629

Taxonomy Code	Specialty	Notes
`208100000X`	General Surgery	Most implantable port and access device placements are performed by general surgeons.
`2086S0102X`	Surgical Oncology	Surgical oncologists frequently place long-term access devices for chemotherapy.
`207P00000X`	Interventional Radiology	Interventional radiologists place and access tunneled catheters and ports using imaging guidance.
`207K00000X`	Vascular Surgery	Vascular surgeons perform implant and revision of vascular access devices.
`207L00000X`	Thoracic Surgery	Thoracic surgeons may place chest wall ports and associated access devices.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z45.2`	Encounter for adjustment and management of implanted device	Common when initial device programming or access verification occurs after port placement.
`Z45.0`	Encounter for adjustment and management of vascular device, unspecified	Used for follow-up care related to vascular access devices.
`C18.9`	Malignant neoplasm of colon, unspecified	Representative oncologic indication for long-term port placement for chemotherapy infusion.
`C50.9`	Malignant neoplasm of breast, unspecified	Common oncologic indication for implantable port placement for systemic therapy.
`T82.7`	Infection and inflammatory reaction due to other cardiac and vascular devices, implants and grafts	Relevant for complications requiring revision, removal, or re-access of implanted devices.
`I80.2`	Phlebitis and thrombophlebitis of other deep vessels of lower extremities	Example of thrombotic complications that may necessitate alternative long-term access planning; relevance is secondary.
`Z79.899`	Other long term (current) drug therapy	Often used to indicate chronic therapies (e.g., chemotherapy) necessitating durable access devices.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`36561`	Insertion of tunneled centrally inserted central venous catheter, with subcutaneous port or pump, age 5 years or older	Often the primary procedure to which `Q4293` is appended for the port access surface area billing.
`36556`	Removal of tunneled central venous catheter, without subcutaneous port	Performed when catheter removal is needed; `Q4293` may not apply unless an access area measurement is required for a port component.
`36568`	Replacement, complete, of implanted catheter, open, without subcutaneous port	May be performed when device revision is required; `Q4293` can be used in conjunction when measuring and billing access area.
`36571`	Replacement, complete, of an implanted catheter with subcutaneous port or pump, including catheter repositioning, age 5 years or older	Performed for port exchange; `Q4293` billed as add-on for measured access area.
`76937`	Ultrasound guidance for vascular access requiring ultrasound evaluation and documentation, per each vessel	Often used during placement of central access devices to guide vessel cannulation prior to port placement where `Q4293` is appended to the primary implantation CPT.

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