Summary & Overview
HCPCS Level II J1324: Injection, Enfuvirtide, 1 mg
HCPCS Level II code J1324 designates the injectable antiretroviral enfuvirtide measured per 1 mg. Enfuvirtide is a fusion inhibitor used in complex HIV treatment regimens, and accurate coding is important for coverage determinations and care coordination across outpatient settings. Nationally, use of J1324 is concentrated in specialty infectious disease clinics, hospital outpatient infusion centers, and ambulatory care sites that manage advanced or treatment-experienced HIV patients.
Key payers included in this review are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The analysis addresses payer-specific coverage nuances, typical sites of service where the code is billed, and clinical context for enfuvirtide administration.
Readers will find benchmarks and practical billing context for J1324, an overview of common payer coverage approaches, and relevant clinical considerations for outpatient injectable antiretroviral therapy. The summary highlights patterns in site-of-service billing and the role of this code within multi-drug HIV regimens. Data not available in the input for related taxonomies, ICD-10 diagnoses, and service-line details.
Billing Code Overview
HCPCS Level II code J1324 represents an injection of enfuvirtide, 1 mg. This code denotes the administration of the antiretroviral peptide enfuvirtide used as part of HIV treatment regimens.
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Service type: Drug administration (injectable medication)
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Typical site of service: Outpatient infusion or injection setting, ambulatory clinic, or other outpatient medical facility where parenteral antiretroviral therapy is administered.
Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with multidrug-resistant human immunodeficiency virus (HIV) who requires salvage antiretroviral therapy. The patient presents to an outpatient infusion clinic or an HIV specialty clinic for subcutaneous administration of enfuvirtide. Enfuvirtide is given as a measured mg dose; billing uses J1324 per 1 mg. The clinical workflow includes verification of the prescription and weight-based dose, medication preparation by pharmacy, pre-administration assessment (vital signs, review of allergies, concomitant antiretrovirals), patient education on injection technique and potential injection-site reactions, and documentation of lot number and dose administered. Typical sites of service are outpatient infusion centers, ambulatory clinics, or HIV specialty clinics; administration is performed by a registered nurse or other trained clinician. Nursing documents pre- and post-injection assessment and any adverse events; billing captures the drug units using J1324 and may append appropriate modifiers for circumstances such as unusual services, reduced services, or patient status modifiers where applicable.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Unspecified | Rarely used; avoid when a specific modifier applies |