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J2405
HCPCS code J2405 identifies ondansetron hydrochloride injection, reported per 1 mg for medically necessary prevention and treatment of nausea and vomiting in eligible healthcare settings.
Code Description
HCPCS code J2405 is used to report ondansetron hydrochloride, an injectable antiemetic medication administered to prevent or treat nausea and vomiting associated with chemotherapy, radiation therapy, surgery, and other medically necessary conditions. The code is reported per 1 milligram (mg) of the medication administered.
Ondansetron works by blocking serotonin (5-HT3) receptors that trigger nausea and vomiting. It is commonly administered by intravenous or intramuscular injection in physician offices, hospitals, outpatient facilities, and emergency departments.
J2405 represents the medication only and does not include administration of the injection. When allowed by payer guidelines, the injection administration may be reported separately using the appropriate CPT® code.
When to Use
Report J2405 when ondansetron hydrochloride is administered by injection for the medically necessary prevention or treatment of nausea and vomiting.
The number of units billed should equal the total number of milligrams administered.
When NOT to Use
Do not report J2405 for oral tablets, orally disintegrating tablets, oral solution, or other non-injectable formulations of ondansetron.
Do not report this code when another HCPCS code more accurately describes the medication administered or when payer policy includes the drug in the reimbursement for another service.
Documentation Requirements
Documentation should support the medical necessity for ondansetron therapy and identify the condition being treated.
The medical record should include the medication administered, dosage in milligrams, route of administration, diagnosis, date of service, and the healthcare professional administering the medication. Documentation should also support the total units billed.
Documentation Checklist
✔ Medical necessity documented
✔ Diagnosis supports treatment
✔ Ondansetron hydrochloride identified
✔ Total dosage documented in milligrams
✔ Route of administration documented
✔ Units billed match the dosage administered
Billing Examples
Postoperative Nausea
A patient receives 4 mg of ondansetron intravenously following an outpatient surgical procedure. Report 4 units of J2405.
Chemotherapy Treatment
A patient receives 8 mg of ondansetron intravenously before chemotherapy to prevent nausea and vomiting. Report 8 units of J2405.
Emergency Department Visit
A patient receives 4 mg of ondansetron by intravenous injection for severe nausea and vomiting caused by acute gastroenteritis. Report 4 units of J2405.
Coding & Billing Tips
Bill one unit for each milligram administered.
Verify the medication matches the HCPCS code description.
Document the exact dosage administered.
Report only the amount administered unless payer policy allows billing for discarded amounts.
Report the appropriate injection administration CPT® code separately when permitted.
Review payer-specific billing requirements before submitting claims.
Common Billing Mistakes
Billing the Wrong Number of Units
J2405 is billed per 1 mg. The units reported should equal the total milligrams administered. Incorrect unit reporting may result in claim denials or payment adjustments.
Reporting the Wrong Drug Code
Verify that the medication administered is ondansetron hydrochloride. Other injectable antiemetics have their own HCPCS codes and should not be billed as J2405.
Incomplete Medication Documentation
The medical record should identify the medication administered, dosage, route of administration, diagnosis, and medical necessity. Missing documentation may delay reimbursement or trigger payer audits.
Billing the Drug Without the Appropriate Administration Code
J2405 represents the medication only. When payer guidelines allow, the injection administration should be reported separately using the appropriate CPT® administration code.
Reporting More Units Than Administered
Only bill the amount of ondansetron actually administered. The units reported should always match the documented dosage.
Applicable ICD-10-CM Diagnosis Codes
Diagnosis codes should accurately reflect the patient's documented condition and support medical necessity for ondansetron hydrochloride administration. The following examples are common indications but are not an all-inclusive list.
R11.2 – Nausea with Vomiting, Unspecified
This diagnosis code may support medical necessity when ondansetron is administered to treat nausea and vomiting. Documentation should identify the patient's symptoms, clinical findings, and the reason injectable antiemetic therapy was medically necessary.
R11.0 – Nausea
This diagnosis code may support medical necessity when ondansetron is administered to control persistent nausea requiring injectable treatment. Documentation should include the patient's diagnosis, symptoms, and treatment plan.
T45.1X5A – Adverse Effect of Antineoplastic and Immunosuppressive Drugs, Initial Encounter
This diagnosis code may support medical necessity when ondansetron is administered to manage nausea and vomiting associated with chemotherapy. Documentation should identify the treatment being provided and support the medical necessity for injectable antiemetic therapy.
Applicable Modifiers
Report Modifier JW when payer policy allows billing for the discarded amount of ondansetron from a single-dose container. Documentation should clearly identify the amount administered and the amount discarded.
Modifier JZ
Report Modifier JZ when no amount of ondansetron was discarded from a single-dose container, if required by payer policy. Documentation should support that the full contents were administered.
Report Modifier KX when payer policy requires confirmation that medical necessity or coverage requirements have been satisfied. Documentation should demonstrate compliance with applicable payer guidelines.
Related HCPCS Codes
J1626
Injection, granisetron hydrochloride, 100 mcg.
J2550
Injection, promethazine hydrochloride, up to 50 mg.
J2765
Injection, metoclopramide hydrochloride, up to 10 mg.
Frequently Asked Questions
How are units calculated for J2405?
J2405 is billed per 1 mg. For example, if 8 mg is administered, report 8 units.
Can J2405 be billed with an injection administration code?
Yes. J2405 represents the medication only. When payer guidelines permit, the appropriate CPT® administration code may also be reported.
Is J2405 only used for chemotherapy patients?
No. It is commonly used to treat or prevent nausea and vomiting related to surgery, radiation therapy, gastroenteritis, medications, and other medically necessary conditions.
Can J2405 be reported in both office and hospital settings?
Yes. J2405 may be reported in physician offices, emergency departments, hospital outpatient departments, and other eligible healthcare settings when payer requirements are met.
What is the most common reason J2405 claims are denied?
Common denials occur when the billed units do not match the documented dosage, the incorrect HCPCS code is selected, documentation is incomplete, or payer-specific billing requirements are not followed.
Category
HCPCS Level II
Common Setting
Billable Unit
Physician Offices, Hospital Outpatient Departments, Emergency Departments, Ambulatory Surgery Centers
1 mg
Description
Code Type
HCPCS Code
J2405
Injection, ondansetron hydrochloride, per 1 mg
Drugs Administered Other Than Oral Method
