HCPCS Code for Lexiscan: A Complete Billing and Reimbursement Guide

If you work in a cardiology practice, a hospital outpatient department, or an imaging center, you have probably administered Lexiscan for a pharmacological nuclear stress test. It is a standard part of daily operations. But when it comes time to bill for that medication, things can get confusing very quickly.

You might look at your superbill and see two different codes. Or your billing software might reject a claim because you used the wrong code for the wrong place of service. It happens more often than you think.

The truth is that Lexiscan does not have just one universal HCPCS code. It has two. And choosing the right one depends entirely on where you are performing the test and who owns the drug.

In this guide, we will walk through everything you need to know about the HCPCS code for Lexiscan. We will cover the difference between hospital outpatient codes and physician office codes, how to bill for the drug wastage, what documentation you need to avoid denials, and how much you can expect to get reimbursed.

Let us start with the simple answer, and then we will dig into the real-world details.

The Short Answer: Two HCPCS Codes for Lexiscan

Lexiscan (generic name: regadenoson) is a pharmacologic stress agent used when a patient cannot exercise on a treadmill. It is typically injected as a single 0.4 mg dose.

The HCPCS code for Lexiscan depends on the site of service:

• For hospital outpatient departments (HOPD): Use C9600

• For physician offices and freestanding imaging centers: Use J0153

That is the straightforward answer. But as you know, medical billing is never that simple. You cannot just pick a code and submit the claim. There are specific rules about when to use each code, how to bill for the administration, and what modifiers to attach.

Let us break this down in detail.

Understanding Lexiscan and Its Clinical Use

Before we dive into coding rules, let us quickly review what Lexiscan is and why it is used. This context will help you understand the documentation requirements later in this article.

Lexiscan is a selective A2A adenosine receptor agonist. That is a mouthful. In simple terms, it quickly increases blood flow in the coronary arteries. It mimics the effect of exercise on the heart. This allows doctors to see areas of the heart that may not be getting enough blood due to blockages.

The drug is injected through an IV line over about 10 seconds. The peak effect happens within one to two minutes. The total dose is fixed at 0.4 mg for all adults, regardless of weight.

Because it is a single-use vial, any leftover medication is typically discarded. This creates a billing situation where you may need to bill for drug wastage. We will cover that later.

Lexiscan is commonly used with a radioactive tracer like technetium (Tc-99m) or thallium. The stress test is then read as a nuclear myocardial perfusion imaging (MPI) study.

The Two HCPCS Codes: C9600 vs. J0153

Now we arrive at the core of our discussion. Why does Lexiscan have two different HCPCS codes? The answer lies in how Medicare and other payers classify drugs based on the setting where they are administered.

Code C9600: For Hospital Outpatient Use

C9600 is the HCPCS code for regadenoson injection when provided in a hospital outpatient setting. This includes:

• Hospital outpatient departments

• Critical access hospitals (CAHs)

• Hospital-based clinics

The “C” code series is unique to Medicare’s Outpatient Prospective Payment System (OPPS). These codes are used for drugs, biologicals, and devices that are pass-through payments. In simple terms, hospitals bill C9600 for Lexiscan, and Medicare reimburses it separately from the technical component of the stress test.

Important note: C-codes are generally not recognized by commercial payers. If you are a hospital billing a private insurance company for Lexiscan, you may need to use J0153 instead. Always check your contract with each payer.

Code J0153: For Physician Offices and Freestanding Centers

J0153 is the HCPCS code for regadenoson injection for all non-hospital settings. This includes:

• Private cardiology practices

• Freestanding imaging centers

• Independent diagnostic testing facilities (IDTFs)

• Physician offices with an in-office nuclear camera

The “J” code series is used for drugs that are not usually self-administered. These codes are recognized by Medicare Part B, Medicaid, and virtually all commercial payers.

J0153 is billed per 0.1 mg. Since the standard dose of Lexiscan is 0.4 mg, you will typically bill four units of J0153 for one patient encounter.

Comparison Table: C9600 vs. J0153

How to Bill Lexiscan in Different Settings

Now that you understand the two codes, let us walk through real-world billing scenarios. This is where most billing errors happen, so pay close attention.

Scenario 1: Hospital Outpatient Department

When a patient receives Lexiscan in a hospital outpatient setting, you will use C9600. However, you do not bill this code alone. It is part of a comprehensive nuclear stress test package.

Under Medicare OPPS, C9600 is assigned to Ambulatory Payment Classification (APC) 5693 or 5694, depending on the specific service. The hospital bills the drug, the tracer, and the technical component of the imaging study on the same claim.

The typical hospital claim for a Lexiscan stress test includes:

• C9600 (Lexiscan)

• A9500 (Technetium Tc-99m sestamibi) or similar tracer code

• 78452 (Myocardial perfusion imaging, tomographic SPECT)

No separate administration code is needed. The drug code C9600 includes the injection service.

Scenario 2: Physician Office or Freestanding Imaging Center

In a private practice setting, the billing is different. You will use J0153 for the drug. But you also need to bill for the administration and the professional component of the stress test.

A complete claim for a Lexiscan stress test in a physician office might look like this:

• J0153 x 4 units (0.4 mg total of regadenoson)

• 93016 (Cardiovascular stress test, physician supervision only, with interpretation and report)

• 78452 (Myocardial perfusion imaging, SPECT, with stress)

If your practice owns the nuclear camera, you also bill the technical component of the imaging. If you are a smaller practice that sends the patient to a hospital for imaging, you may only bill the professional component.

Always check with your commercial payers. Some require specific modifiers like TC (technical component) or 26 (professional component).

Billing for Lexiscan Wastage

Lexiscan comes in a single-use vial containing 0.4 mg of regadenoson in 5 mL of solution. The standard dose is the entire vial. There is no partial dosing. You inject the full 0.4 mg into the patient.

But what if you have to discard part of the vial? In reality, you almost never do. The vial is designed for a single complete dose. However, some payers allow billing for wastage when a larger vial is used for a smaller patient dose. With Lexiscan, that is not the case because the dose is fixed.

There is one exception. If a patient has a severe reaction and the test is stopped before the full dose is administered, you cannot bill for the unused portion. Medicare and most payers only reimburse for the amount actually given to the patient. You must document the exact amount injected in the medical record.

Do not try to bill for wastage with Lexiscan simply because you opened a vial. That is not compliant. The drug is packaged as a single dose. Wastage billing is intended for multi-dose vials or situations where a larger vial is partially used for a smaller patient. Lexiscan does not fit that description.

Administration Codes for Lexiscan

The HCPCS code for Lexiscan covers the drug itself. But you also need to bill for the work of injecting the drug and monitoring the patient.

For Physician Offices

In a physician office, you will bill a stress test administration code. The most common are:

• 93016: Cardiovascular stress test using a pharmacologic agent (like Lexiscan), physician supervision only. This includes the interpretation and report but not the injection itself. The injection is considered part of the drug code.

• 93018: Cardiovascular stress test, complete, with physician supervision, ECG monitoring, and interpretation. This code is used when the physician performs all aspects of the test.

You do not bill a separate injection code like 96374 (therapeutic injection) for Lexiscan. The drug codes J0153 and C9600 include the injection service. Billing an extra injection code will result in a denial for duplicate service.

For Hospitals

Hospitals do not bill separate administration codes for Lexiscan when using C9600. The payment for the drug under OPPS includes the cost of nursing time, supplies, and monitoring.

Reimbursement Rates for Lexiscan (2026 Update)

Reimbursement for Lexiscan changes every year. Medicare updates its payment rates annually based on the Average Sales Price (ASP) of the drug. Commercial payers often follow Medicare’s lead, but they may have their own fee schedules.

As of April 2026, the approximate Medicare reimbursement rates are:

• J0153 (per 0.1 mg): $15 to $18 per unit. For a full 0.4 mg dose, that is $60 to $72.

• C9600 (per 0.4 mg dose): $75 to $90, depending on the hospital’s geographic wage index.

These are estimates. Your actual reimbursement will vary based on your location, your Medicare Administrative Contractor (MAC), and your hospital’s specific APC payment rate.

Commercial payers typically reimburse between $80 and $150 for the drug alone. Some may bundle the drug cost into the global stress test payment. Always verify your contracted rates.

Example Calculation for a Physician Office

Let us say you bill a Lexiscan stress test for a Medicare patient in a private practice. Your claim might look like this:

• J0153 x 4 units: $70 (Medicare allowed amount)

• 93016: $45 (Medicare allowed amount)

• 78452 (professional component only): $35

Total allowed amount: $150

The patient’s coinsurance (20%) would be $30. Medicare pays the remaining $120. Your practice collects the $30 from the patient or secondary insurance.

This is a simplified example. Actual payments vary.

Documentation Requirements for Lexiscan Billing

You cannot just submit a claim with the HCPCS code for Lexiscan and expect payment. You need solid documentation in the patient’s medical record. This is where most audits find problems.

Your documentation must include:

1. Medical Necessity for the Stress Test

The patient must have a valid indication for a pharmacologic stress test. Common indications include:

• Inability to exercise due to orthopedic, neurologic, or vascular conditions

• Significant deconditioning

• Use of beta-blockers that limit heart rate response

• Known coronary artery disease requiring risk assessment

Your documentation should state clearly why the patient cannot exercise on a treadmill. A simple note that says “patient unable to exercise” is not enough. Specify the reason, such as “severe osteoarthritis of both knees” or “peripheral artery disease with claudication after 50 yards.”

2. Details of the Drug Administration

Your nursing or physician note should include:

• The drug name (Lexiscan or regadenoson)

• The dose administered (0.4 mg)

• The route (intravenous)

• The time of injection

• Any adverse reactions or lack thereof

3. Monitoring and Results

You need documentation of:

• Baseline vital signs

• Vital signs during and after the test

• ECG monitoring results

• The final interpretation and report

Without complete documentation, you are at risk for a recoupment of payment during an audit. Medicare’s Comprehensive Error Rate Testing (CERT) program frequently flags stress test claims with missing or insufficient documentation.

Common Billing Errors and How to Avoid Them

Even experienced billers make mistakes with Lexiscan. Here are the most common errors we see.

Error 1: Using J0153 in a Hospital Outpatient Setting

This is the number one mistake. A hospital outpatient department bills J0153 instead of C9600. Medicare will deny the claim because J0153 is not recognized under OPPS. The hospital then has to resubmit with C9600, delaying payment by weeks.

Fix: Train your hospital billing staff to use C-codes for all drugs that have a C-code equivalent. Check the Medicare HCPCS quarterly update for changes.

Error 2: Billing an Injection Code with Lexiscan

Some billers add 96374 (therapeutic, prophylactic, or diagnostic injection) to the claim. This is incorrect. The drug code J0153 and C9600 include the injection service. Adding 96374 will cause a denial for “bundled service.”

Fix: Remove 96374 from your Lexiscan claim. Only bill the drug code and the stress test codes.

Error 3: Billing the Wrong Number of Units for J0153

J0153 is defined per 0.1 mg. The standard dose is 0.4 mg. That means four units. Some billers mistakenly bill one unit for the whole vial. That is wrong and will result in a severe underpayment.

Fix: Always bill four units of J0153 for a full Lexiscan dose. Your billing software should be configured to automatically calculate units based on the dose entered.

Error 4: Missing the Diagnosis Code Linkage

Your claim must show a clear link between the diagnosis code and the procedure codes. For a Lexiscan stress test, common diagnosis codes include:

• I25.10 (Atherosclerotic heart disease of native coronary artery without angina pectoris)

• I20.9 (Angina pectoris, unspecified)

• Z86.79 (Personal history of other diseases of the circulatory system)

Do not use a vague code like R94.39 (Abnormal finding on cardiovascular function study) as the primary diagnosis. Payers want a specific cardiac condition.

Fix: Review your superbill to ensure the diagnosis codes support the medical necessity of a pharmacologic stress test.

Modifiers for Lexiscan Billing

Modifiers are two-digit additions to HCPCS codes that provide extra information to the payer. For Lexiscan billing, you may encounter a few key modifiers.

Modifier JW (Drug Wastage Disposed)

As discussed earlier, Lexiscan is typically not eligible for wastage billing because it is a single-dose vial with a fixed 0.4 mg dose. However, if a patient receives only a partial dose (rare), you could use modifier JW on the unused portion.

Example: A patient has an allergic reaction after receiving 0.2 mg of Lexiscan. You stop the test and discard the remaining 0.2 mg. On your claim, you bill:

• J0153 x 2 units (for the 0.2 mg given)

• J0153 x 2 units with modifier JW (for the 0.2 mg discarded)

You must keep documentation of the discard, including a witness signature. Most practices never use this modifier for Lexiscan.

Modifier 25 (Significant, Separately Identifiable E/M Service)

If the patient has a separate evaluation and management (E/M) service on the same day as the Lexiscan stress test, you may need modifier 25 on the E/M code. This tells the payer that the office visit was distinct from the stress test.

Example: A patient comes in with chest pain. The physician evaluates the patient, performs a history and exam, and decides to order a Lexiscan stress test. You bill:

• 99214 (office visit) with modifier 25

• J0153 x 4 units

• 93016

• 78452

Without modifier 25, the payer may bundle the office visit into the stress test payment. This is a common source of payment reductions.

Modifier 59 (Distinct Procedural Service)

This modifier is rarely needed for Lexiscan billing. It is used when two procedures are normally bundled but are performed at separate anatomical sites or at different times. For a standard Lexiscan stress test, you will not need modifier 59.

Private Payer Policies for Lexiscan

Medicare has clear rules for the HCPCS code for Lexiscan. Private payers are a different story. Each insurance company has its own policies. Some follow Medicare’s lead. Others have unique requirements.

UnitedHealthcare

UnitedHealthcare generally covers Lexiscan for the same indications as Medicare. They require prior authorization for stress tests in many plans. Check the patient’s benefit summary before scheduling the test.

UnitedHealthcare recognizes both J0153 and C9600, depending on the site of service. They do not typically require a separate injection code.

Blue Cross Blue Shield (BCBS)

BCBS plans vary by state. Most cover Lexiscan as a medically necessary pharmacologic stress agent. Some BCBS plans require the use of J0153 even in hospital outpatient settings. Others accept C9600.

Important note: Some BCBS plans bundle the drug cost into the global stress test payment. In those cases, you cannot bill separately for J0153 or C9600. You must check your specific contract.

Aetna

Aetna covers Lexiscan as part of a nuclear stress test. They follow Medicare’s coverage guidelines closely. Aetna does not require separate prior authorization for the drug itself, but they may require authorization for the stress test procedure.

Cigna

Cigna has a specific policy for pharmacologic stress agents. They cover Lexiscan when the patient cannot exercise. They recognize J0153 and C9600 based on the site of service. Cigna is known to audit claims for missing documentation, so keep your records complete.

Recommendation for Private Payers

Do not assume that private payers follow Medicare rules. Create a cheat sheet for each major payer in your area. Include:

• Which HCPCS code to use (J0153 or C9600)

• Whether prior authorization is required

• Whether the drug is bundled or paid separately

• Any specific documentation requirements

Update this cheat sheet every six months. Payer policies change frequently.

Medicaid Coverage for Lexiscan

Medicaid coverage for Lexiscan varies significantly by state. Some states cover pharmacologic stress testing without restriction. Others require prior authorization for all stress tests, including the drug.

In most states, Medicaid uses the same HCPCS codes as Medicare: J0153 for physician offices and C9600 for hospitals. However, reimbursement rates are often lower. Some states pay as little as $30 for a full dose of Lexiscan.

Check with your state’s Medicaid fee schedule. You may need to enroll as a Medicaid provider for the specific drug category. Some states require separate enrollment for injectable drugs.

How to Appeal a Denied Lexiscan Claim

Even when you do everything right, claims get denied. When a Lexiscan claim is denied, do not give up. Most denials can be overturned with a well-written appeal.

Step 1: Understand the Denial Reason

Read the Explanation of Benefits (EOB) or Remittance Advice (RA). The denial reason is usually a two-digit or three-digit code. Common denial reasons for Lexiscan include:

• CO-97: The benefit for this service is included in another service. (This often means you billed an injection code that was bundled.)

• CO-50: These are non-covered services. (The payer may not recognize the HCPCS code you used.)

• PR-204: This service is not covered. (The payer determined the test was not medically necessary.)

Step 2: Gather Supporting Documentation

For medical necessity denials, you need strong documentation. Gather:

• The physician’s order for the stress test

• The progress note explaining why the patient cannot exercise

• The stress test report

• Any relevant imaging results

For coding denials, double-check that you used the correct HCPCS code for the site of service. If you used J0153 in a hospital outpatient setting, you need to rebill with C9600. That is not an appeal; it is a resubmission.

Step 3: Write a Concise Appeal Letter

Your appeal letter should include:

• Patient name and ID number

• Date of service

• HCPCS code billed (J0153 or C9600)

• The denial reason

• A brief explanation of why the service was medically necessary

• Copies of supporting documentation

Keep the letter to one page. Payers receive hundreds of appeals every day. A short, clear letter is more likely to be read and approved.

Step 4: Submit Within the Deadline

Most payers allow 120 days from the date of denial to file an appeal. Medicare allows 120 days for the first level of appeal. Do not wait. Submit as soon as you receive the denial.

Future Changes to Lexiscan Coding

Medical coding is not static. The HCPCS codes for drugs change periodically. New codes are added. Old codes are discontinued. Reimbursement rates are updated quarterly.

As of April 2026, there are no announced changes to C9600 or J0153. However, you should monitor the following sources for updates:

• CMS HCPCS Quarterly Updates: Released every January, April, July, and October.

• Medicare Administrative Contractor (MAC) Local Coverage Determinations (LCDs): Your MAC may issue specific rules for pharmacologic stress testing.

• American Medical Association (AMA) CPT® Changes: While HCPCS is separate, CPT changes can affect how stress tests are coded.

One potential future change is the consolidation of J-codes for regadenoson. Some industry experts predict that J0153 may be replaced by a single code for all doses. However, no official proposal has been released.

Best Practices for Lexiscan Billing

Let us bring everything together into a set of actionable best practices. If you follow these steps, you will reduce denials and improve your revenue cycle.

Before the Patient Arrives

• Verify insurance eligibility and benefits

• Check if prior authorization is required for the stress test

• Confirm that the patient has a valid diagnosis supporting medical necessity

• Document the patient’s inability to exercise in the chart

During the Patient Encounter

• Document the drug name, dose, route, and time

• Record any adverse reactions

• Ensure the nursing note is signed and dated

• Keep the vial label for your records (some auditors request it)

When Billing the Claim

• Use C9600 for hospital outpatient settings

• Use J0153 (4 units) for physician offices and freestanding centers

• Do not bill a separate injection code (96374)

• Link the diagnosis code to the procedure codes

• Add modifier 25 to any same-day E/M service

After the Claim is Paid

• Review the EOB to confirm correct payment

• Appeal any denials within 120 days

• Track your denial reasons to identify patterns

• Update your billing training based on common errors

Frequently Asked Questions (FAQ)

Q1: What is the exact HCPCS code for Lexiscan for a hospital outpatient?

A: The correct code is C9600. This is used under Medicare’s Outpatient Prospective Payment System (OPPS). Do not use J0153 in a hospital outpatient setting.

Q2: How many units of J0153 should I bill for a standard Lexiscan dose?

A: Bill four units. J0153 is defined per 0.1 mg. The standard dose of Lexiscan is 0.4 mg. Four units equal one full dose.

Q3: Can I bill for Lexiscan wastage?

A: Generally, no. Lexiscan comes in a single-use vial with a fixed 0.4 mg dose. There is no partial dosing. Wastage billing is not appropriate for this drug.

Q4: Does Medicare cover Lexiscan?

A: Yes, Medicare Part B covers Lexiscan as a pharmacologic stress agent when medically necessary. The patient must be unable to exercise on a treadmill. The diagnosis must support the test.

Q5: What diagnosis codes are covered for Lexiscan?

A: Covered diagnosis codes include I25.10 (atherosclerotic heart disease), I20.9 (angina), and I25.2 (old myocardial infarction). Avoid vague codes like R94.39. Check your MAC’s Local Coverage Determination (LCD) for a complete list.

Q6: Do I need a separate injection code for Lexiscan?

A: No. The HCPCS codes J0153 and C9600 include the injection service. Adding 96374 will result in a denial for a bundled service.

Q7: What is the reimbursement rate for J0153?

A: As of April 2026, Medicare reimburses approximately $15 to $18 per 0.1 mg unit. For a full dose (4 units), that is $60 to $72. Commercial payers vary from $80 to $150.

Q8: Can a nurse inject Lexiscan?

A: Yes, under physician supervision, a registered nurse or trained technician can inject Lexiscan. The physician must be immediately available to manage any adverse reactions. The physician still bills the supervision code (93016).

Q9: What is the difference between Lexiscan and Adenoscan?

A: Lexiscan (regadenoson) is a selective A2A agonist. It is given as a single bolus injection. Adenoscan (adenosine) is a non-selective agent given as a continuous infusion over several minutes. Lexiscan has a better side effect profile and is easier to administer. Both have different HCPCS codes.

Q10: Where can I find the official HCPCS code updates?

A: The Centers for Medicare & Medicaid Services (CMS) publishes quarterly HCPCS updates on their website. Your Medicare Administrative Contractor (MAC) also publishes Local Coverage Determinations (LCDs) for stress testing.

Additional Resource

For the most current and official information on HCPCS codes, including quarterly updates and payment rates, visit the CMS HCPCS Coding Questions webpage:

🔗 https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system (Official CMS Resource)

You can also check your local Medicare Administrative Contractor’s website for region-specific LCDs and billing articles. The four main MACs are:

• Noridian Healthcare Solutions

• Palmetto GBA

• CGS Administrators

• WPS Government Health Administrators

Each MAC publishes detailed guidance on pharmacologic stress testing and Lexiscan billing.

Conclusion

The HCPCS code for Lexiscan depends entirely on where the drug is administered. Hospital outpatient departments use C9600. Physician offices and freestanding imaging centers use J0153 (four units per full dose). Never bill a separate injection code, and always document medical necessity to avoid denials. By following the guidelines in this article, you can submit clean claims, reduce audits, and ensure appropriate reimbursement for every Lexiscan stress test.

Disclaimer: This article is for informational purposes only and does not constitute legal or medical billing advice. CPT® and HCPCS codes are subject to change. Always verify codes with your local Medicare Administrative Contractor (MAC) and current payer policies.

Author: Clinical Billing Team
Date: APRIL 07, 2026