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A4550

Surgical trays used during covered medical procedures, typically containing sterile disposable instruments and supplies required for a specific procedure.

Code Description

HCPCS code A4550 is used to report a surgical tray containing sterile disposable instruments, supplies, and other materials required to perform a covered surgical procedure. Surgical trays are assembled for specific procedures and generally include items such as drapes, gloves, syringes, gauze, scalpels, forceps, and other disposable surgical supplies.

The code represents the surgical tray itself rather than the individual supplies contained within the tray. Depending on the payer, the cost of the surgical tray may be separately reimbursable or considered bundled into the payment for the associated procedure.

Providers should review payer policies before reporting A4550, as coverage and reimbursement vary significantly among Medicare, Medicaid, and commercial insurance plans.

When to Use HCPCS Code A4550

Report HCPCS code A4550 when a separately billable sterile surgical tray is furnished during a covered procedure and the payer allows separate reimbursement for the tray.

Common situations include:

  • Minor surgical procedures performed in a physician's office

  • Dermatologic excisions

  • Biopsies

  • Laceration repairs

  • Orthopedic injections requiring sterile trays

  • Gynecologic office procedures

  • General surgical office procedures

Always verify whether the payer considers the surgical tray separately billable or bundled into the primary procedure payment.

When NOT to Use HCPCS Code A4550

Do not report HCPCS code A4550 when:

  • The payer bundles surgical tray supplies into the primary procedure reimbursement.

  • Individual disposable supplies are billed separately instead of a surgical tray.

  • A reusable instrument tray is used.

  • The tray does not meet payer requirements for separate reimbursement.

  • The surgical supplies are included under a facility payment or global reimbursement methodology.

Many Medicare Administrative Contractors (MACs) and commercial insurers consider surgical trays bundled for certain procedures.

Documentation Requirements

Documentation should clearly support the medical necessity for the surgical procedure and the use of the surgical tray.

The medical record should include:

  • The procedure performed

  • Medical necessity for the procedure

  • Description of the surgical tray used

  • Date of service

  • Provider performing the procedure

  • Documentation showing the tray was furnished during the procedure

  • Any payer-required documentation supporting separate billing

When separate reimbursement is requested, documentation should demonstrate that the billed tray meets the payer's coverage requirements.

Documentation Checklist

Before submitting HCPCS code A4550, confirm that the documentation includes:

✓ Covered surgical procedure documented

✓ Medical necessity established

✓ Surgical tray furnished during the procedure

✓ Appropriate procedure code reported

✓ Surgical tray supported by documentation

✓ Payer allows separate reimbursement

✓ Claim meets payer billing requirements

Billing Examples
Example 1

A dermatologist performs an excision of a benign skin lesion in the office using a sterile disposable surgical tray containing drapes, gloves, forceps, scalpel, gauze, and syringes. The payer allows separate reimbursement for surgical trays, making HCPCS code A4550 appropriate.

Example 2

A family physician repairs a simple laceration using a disposable sterile procedure tray. Documentation supports the procedure and the payer's policy permits separate billing for the tray.

Example 3

An orthopedic physician performs a joint aspiration in the office using a sterile disposable tray prepared specifically for the procedure. When payer policy allows separate reimbursement, HCPCS code A4550 may be reported.

Coding & Billing Tips

  • Always review payer policies before billing HCPCS code A4550.

  • Confirm whether the surgical tray is bundled into the primary procedure payment.

  • Report only one surgical tray per qualifying procedure unless payer guidelines state otherwise.

  • Do not separately bill supplies already included within another reimbursable supply code.

  • Maintain documentation identifying the surgical tray used.

  • Verify medical necessity for the associated surgical procedure.

  • Follow National Correct Coding Initiative (NCCI) and payer-specific billing edits when applicable.

Common Billing Mistakes

Billing A4550 When the Tray Is Bundled

Many payers include the cost of surgical trays within the reimbursement for the primary surgical procedure. Billing the tray separately when it is considered bundled may result in claim denial.

Billing Individual Supplies and the Surgical Tray

Do not bill both HCPCS code A4550 and the individual disposable supplies contained within the same tray unless payer policy specifically permits separate reimbursement.

Insufficient Documentation

Failure to document the procedure, medical necessity, or use of the surgical tray may result in denial or delayed payment.

Using A4550 for Reusable Instrument Trays

HCPCS code A4550 applies to disposable surgical trays and should not be reported for reusable instrument sets.

Ignoring Payer Policies

Coverage rules vary considerably among Medicare, Medicaid, and commercial insurers. Always verify whether the payer recognizes HCPCS code A4550 as separately billable.

Applicable ICD-10-CM Diagnosis Codes

The diagnosis code reported should accurately reflect the patient's documented condition and support medical necessity for the associated procedure. The examples below represent common diagnoses that may be reported with HCPCS code A4550 but are not intended to be an all-inclusive list.

D23.9 – Other Benign Neoplasm of Skin, Unspecified

Commonly reported when a surgical tray is used during excision of a benign skin lesion.

S61.419A – Laceration Without Foreign Body of Unspecified Hand, Initial Encounter

May be reported when a patient requires repair of a hand laceration using sterile instruments and disposable supplies contained within a surgical tray. The medical record should document the location, severity, and treatment of the injury.

L72.3 – Sebaceous Cyst

This diagnosis code may support procedures involving the excision or drainage of a sebaceous cyst performed with a sterile surgical tray. Documentation should describe the cyst, the procedure performed, and the reason surgical treatment was necessary.

M25.561 – Pain in Right Knee

May support procedures such as joint aspiration or therapeutic injection when a sterile surgical tray is required to safely perform the service. The documentation should establish the patient's symptoms, clinical findings, and the medical necessity for the procedure.

N84.1 – Polyp of Cervix Uteri

May be reported when a provider performs a gynecologic procedure involving the removal or treatment of a cervical polyp using sterile disposable instruments. Documentation should support both the diagnosis and the procedure performed.

Applicable Modifiers
Modifier 59 – Distinct Procedural Service

Report Modifier 59 when the associated procedure is distinct and separately identifiable from other services performed on the same day. Documentation should clearly support why the service qualifies for separate reporting.

Modifier 25

Report Modifier 25 when a significant, separately identifiable evaluation and management service is performed on the same day as the procedure requiring the surgical tray. Documentation must clearly support that the E/M service was above and beyond the work normally associated with the procedure.

Modifier RT

Report Modifier RT when the associated procedure is performed on the right side of the body and the payer requires laterality modifiers for accurate claim processing.

Modifier LT

Report Modifier LT when the associated procedure is performed on the left side of the body and payer guidelines require laterality reporting.

Related HCPCS Codes
A4649 – Surgical Supply; Miscellaneous

Used for surgical supplies that are not otherwise classified by a more specific HCPCS code. It may be appropriate when a supply does not qualify as a separately billable surgical tray.

A4552 – Replacement Electrodes

Reported for replacement electrodes used with transcutaneous electrical nerve stimulation (TENS) units and other approved medical devices. Unlike A4550, this code is not related to surgical procedures.

A4206 – Syringe With Needle, Sterile

Used to report individually supplied sterile syringes and needles. Unlike A4550, this code applies to individual disposable supplies rather than a complete surgical tray.

Frequently Asked Questions

What is HCPCS code A4550?

HCPCS code A4550 is used to report a disposable surgical tray containing sterile instruments and supplies used during covered medical or surgical procedures.

Is HCPCS code A4550 always separately reimbursable?

No. Many payers bundle surgical trays into the payment for the primary procedure, while others allow separate reimbursement under specific circumstances.

Can individual supplies be billed with A4550?

Generally, no. The disposable supplies contained within the tray are considered part of the surgical tray unless payer policy states otherwise.

Who typically reports HCPCS code A4550?

Physicians, ambulatory surgery centers, and outpatient facilities may report A4550 when payer guidelines allow separate billing.

Does Medicare cover HCPCS code A4550?

Coverage depends on Medicare contractor policies and the procedure performed. In many cases, Medicare considers surgical trays bundled into the payment for the associated procedure.

What documentation is required for A4550?

Documentation should identify the procedure performed, establish medical necessity, support the use of the surgical tray, and satisfy any payer-specific requirements for separate reimbursement.

Category

HCPCS Level II

Common Setting

Billable Unit

Office & Outpatient

Per Tray

Description

Code Type

HCPCS Code

A4550

Surgical Trays

Medical & Surgical Supplies