HCPCS Code J3304: Injection, Triamcinolone Acetonide, Preservative-Free, Extended‑Release Microsphere, 1 mg

## **J3304 documentation requirements** Accurate documentation is essential when billing for Injection, Triamcinolone Acetonide, Preservative-Free, Extended‑Release Microsphere, 1 mg. Complete medical records should include: ### **Diagnosis and indication** Record the precise diagnosis, such as symptomatic OA or specifically knee osteoarthritis, along with ICD-10 coding to clearly justify medical necessity. ### **Dose administered** Clearly document the exact dosage in milligrams of the extended-release microsphere formulation 1 mg administered to the patient. ### **Administration details** Record the route (major joint intra-articular injection), specific laterality (e.g., right knee), and method, including needle size and technique such as ultrasound guidance, if used. ### **Synovial fluid assessment** Document if synovial fluid aspiration was performed during the procedure and include relevant findings as part of medical necessity. ### **Medication identification** Include details such as lot number, expiration date, and National Drug Code (NDC) in the patient's records. ### **Treatment rationale and outcomes** Include a clear rationale for injection (for example, "previous inadequate response to NSAIDs"), and document outcomes such as improved pain or increased mobility to provide ongoing support for treatment.

## **J3304 billing requirements** For proper billing and reimbursement of Injection, Triamcinolone Acetonide, Preservative-Free, Extended‑Release Microsphere, 1 mg, follow these specific guidelines: ### **Accurate unit reporting** Bill 1 unit of HCPCS code J3304 precisely per 1 mg administered; for example, bill 32 units for a 32 mg dose. ### **CPT code usage** Pair HCPCS J3304 with CPT code 20610 (arthrocentesis or injection, major joint) for the procedure itself. ### **Laterality modifiers** Include RT (right) or LT (left) modifiers to identify joint laterality clearly, such as injections performed specifically in the right knee. ### **Drug wastage modifiers** Include JW modifier if part of the drug from the single-dose vial was discarded, or JZ modifier if no wastage occurred, as mandated by CMS guidelines. ### **NDC and payer compliance** Always provide the NDC and verify payer-specific coverage policies for the extended-release microsphere formulation 1 mg, particularly for Medicare and Medicaid services, to ensure claims are accurately covered.

## **J3304 applicable modifiers** Applicable modifiers for billing HCPCS code J3304 include: 1. **JW**: Indicates a portion of the drug was discarded. 1. **JZ**: Confirms no drug wastage occurred (required by CMS from July 1, 2023). 1. **RT/LT**: Identify injection location laterality (right or left knee). 1. **99**: Used if multiple modifiers are required per payer-specific instructions. Providers must comply with CMS rules and payer guidelines for modifier usage.

## **Other relevant codes** Providers frequently report related CPT/HCPCS codes alongside HCPCS code J3304 for joint injection procedures or similar injectable corticosteroids: - **20610**: Arthrocentesis or injection, aspiration and/or injection; major joint (e.g., knee, shoulder). - **20611**: Arthrocentesis or injection, aspiration and/or injection; major joint with ultrasound guidance. - **J3300**: Injection, Triamcinolone Acetonide, standard formulation, 1 mg; shorter-duration relief for osteoarthritis. - **J7325**: Hyaluronan or derivative injection, 1 mg, used to manage symptomatic OA. - **20605**: Arthrocentesis or injection, intermediate joint or bursa, e.g., subacromial bursa.