Summary & Overview
HCPCS S0155: Sterile Dilutant for Epoprostenol, 50 ml
HCPCS Level II code S0155 represents a sterile dilutant for epoprostenol, 50 ml, used to prepare intravenous epoprostenol infusions. This supply code matters nationally because epoprostenol is a high-acuity prostacyclin therapy for pulmonary arterial hypertension and other vascular conditions; the appropriate billing for companion supplies affects facility and home infusion reimbursement and clinical workflow.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code's clinical context, common sites of service (hospitals, infusion centers, and home infusion), and operational considerations tied to billing and documentation. The publication summarizes benchmark payment themes, payer coverage patterns, and relevant coding relationships where available. It also outlines typical service lines and practical implications for claims processing and supply management.
Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes is noted where applicable. The content is designed for national audiences seeking clarity on HCPCS Level II code S0155, how it is used in practice, and what to expect from major payers regarding coverage and billing workflows.
Billing Code Overview
HCPCS Level II code S0155 denotes a sterile dilutant for epoprostenol, 50 ml. This item is a sterile solution used to reconstitute or dilute epoprostenol for intravenous administration.
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Service Type: Supply for medication preparation and administration
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Typical Site of Service: Hospital inpatient or outpatient settings, infusion centers, and home infusion when epoprostenol therapy is administered
Clinical & Coding Specifications
Clinical Context
A patient with pulmonary arterial hypertension (PAH) receiving continuous intravenous epoprostenol therapy presents to an outpatient infusion center or hospital pharmacy for preparation of medication. The sterile dilutant S0155 (50 ml) is used by pharmacy staff to reconstitute or dilute epoprostenol solution prior to filling ambulatory infusion pumps or elastomeric reservoirs. Typical workflow: clinician documents the prescription for epoprostenol with required concentration and daily dose; pharmacy compounds the sterile admixture in an ISO-classified cleanroom or laminar flow hood using aseptic technique, selecting S0155 as the diluent volume to achieve the ordered concentration; compounded infusion bags or syringes are labeled with concentration, beyond-use date, and administration instructions; nursing or home infusion provider delivers infusion pump and supplies to the patient; home health or infusion nurse educates the patient/caregiver on pump operation, line care, and emergency procedures. Typical site of service: hospital outpatient pharmacy, specialty infusion pharmacy, or home infusion provider. Typical patient scenario: an adult with WHO Group 1 PAH stabilized on intravenous epoprostenol requiring frequent ambulatory pump fills and pharmacy-supplied sterile dilutant for daily compounding and pump reservoir preparation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 |