Summary & Overview
HCPCS S0021: Injection, Cefoperazone Sodium, 1 Gram
HCPCS Level II code S0021 denotes the administration of cefoperazone sodium, 1 gram, an injectable broad‑spectrum cephalosporin used to treat serious bacterial infections. As a drug administration code, S0021 matters nationally because it captures utilization and billing for an important parenteral antibiotic in acute and outpatient infusion settings, informing payer pharmacy strategies and facility reimbursement patterns.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for injectable cefoperazone, typical sites of service where this drug is administered, and what to expect when this HCPCS Level II code appears on a claim. The publication also outlines benchmarks and billing considerations commonly reviewed by payers and facilities, summaries of relevant coding and coverage themes, and potential policy updates affecting parenteral antibiotic billing.
This analysis is designed for national audiences interested in coding accuracy, payer coverage alignment, and the operational implications of billing for injectable antibiotics. Data not available in the input will be identified in the body where applicable.
Billing Code Overview
HCPCS Level II code S0021 represents an injection of cefoperazone sodium, 1 gram. This service is an intravenous or intramuscular antibiotic administration used for systemic bacterial infections where cefoperazone is clinically indicated.
Service Type: Drug administration (injectable antibiotic)
Typical Site of Service: Hospital inpatient, hospital outpatient, emergency department, or ambulatory infusion center, depending on clinical need and physician orders.
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Clinical & Coding Specifications
Clinical Context
A typical patient is an adult admitted to an acute care hospital or presenting to an outpatient infusion or emergency department for a moderate-to-severe gram-negative bacterial infection (for example complex intra-abdominal infection or hospital-acquired pneumonia) requiring parenteral broad-spectrum cephalosporin therapy. A physician (infectious disease or hospitalist) diagnoses the infection, selects S0021 (injection, cefoperazone sodium, 1 gram) as the drug product, and orders administration. A registered nurse or pharmacist prepares the dose (reconstitutes lyophilized powder per manufacturer directions) and verifies dose, route (intravenous), and infusion rate. The nurse documents medication administration in the electronic medical record including lot number and expiration, monitors the patient for infusion-related reactions (e.g., hypersensitivity, infusion site reaction, bleeding risk due to cefoperazone’s effect on coagulation), and coordinates repeat dosing at the ordered interval. For outpatient infusion center or home infusion, a specialty pharmacist or infusion nurse arranges payer authorization, documents drug-specific billing using S0021, and applies an appropriate modifier when clinically indicated (for example, unusual circumstance, discontinued service, or outpatient hospital site).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 |