Summary & Overview
HCPCS J2358: Olanzapine Long-Acting Injection, 1 mg
HCPCS Level II code J2358 denotes a long-acting injectable formulation of olanzapine at a 1 mg unit. This code identifies administration of a maintenance or acute antipsychotic therapy delivered as a long-acting injectable, relevant to psychiatric and behavioral health services nationwide. Clear coding for long-acting antipsychotics matters for clinical continuity, pharmacy billing, and payor coverage decisions, and it impacts site-of-service billing across outpatient and ambulatory settings.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical and service context for J2358, an outline of common payer coverage considerations, and where to look for benchmarks and policy updates. The publication summarizes reimbursement and billing themes that affect facilities and clinicians administering long-acting injectable antipsychotics, including typical sites of service and coding considerations for medication administration claims.
This national-level summary is intended to orient revenue cycle teams, clinical billers, and policy stakeholders to the purpose of J2358, the clinical scenario it supports, and the types of information—benchmarks, payer policy updates, and clinical context—they should consult when managing claims for long-acting olanzapine injections.
Billing Code Overview
HCPCS Level II code J2358 represents an injection formulation of olanzapine, long-acting, 1 mg. The code denotes a pharmaceutical administration service for a long-acting antipsychotic medication in a single 1 mg unit of measure.
Service Type: Medication administration (long-acting injectable antipsychotic)
Typical Site of Service: Outpatient clinic, behavioral health clinic, emergency department, or other ambulatory care settings where injectable psychiatric medications are administered
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 36-year-old patient with a history of schizophrenia and recurrent psychotic symptoms presents to an outpatient behavioral health clinic for scheduled maintenance treatment. The patient is on long-acting injectable olanzapine to improve adherence after multiple missed oral antipsychotic doses and repeated hospitalizations for psychosis. The clinical workflow includes pre-visit assessment of mental status and metabolic parameters, verification of previous injection date and dosage, screening for contraindications (including recent allergic reactions and evidence of acute medical illness), informed consent documentation, and review of monitoring requirements for post-injection observation. On the day of service, a licensed clinician prepares and documents the J2358 medication vial and dose, performs standard intramuscular injection technique in a clinic treatment room, and observes the patient for the recommended period for post-injection adverse events. Vital signs and any immediate reactions are recorded, and a follow-up plan is confirmed with the patient. Billing records include the HCPCS Level II code J2358 and appropriate modifier(s) to indicate service specifics, and the encounter is coded to an appropriate psychiatric ICD-10 diagnosis for continuity of care and payer adjudication.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 |