Summary & Overview
HCPCS Q2009: Injection, Fosphenytoin 50 mg Phenytoin Equivalent
HCPCS Level II code Q2009 denotes an injection of fosphenytoin, specified as 50 mg phenytoin equivalent. This code is used to bill administration of a parenteral anticonvulsant formulation commonly employed for rapid seizure control and for other clinical indications that require intravenous phenytoin delivery. Nationally, accurate coding of injectable anticonvulsants affects hospital billing, inpatient drug utilization tracking, and payer reimbursement for acute neurologic care.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for fosphenytoin injection, typical sites of service where this code applies, and the payer mix relevant to national billing practices. The publication also provides benchmarks for utilization and reimbursement where available, highlights recent policy and coding updates affecting injectable anticonvulsants, and outlines considerations for documentation and claim submission in acute care settings.
This summary is intended for billing managers, hospital revenue cycle staff, clinicians involved in acute seizure management, and policy analysts seeking a concise reference to HCPCS Level II code Q2009 and its role in clinical and financial workflows.
Billing Code Overview
HCPCS Level II code Q2009 represents an injection of fosphenytoin, dosed as 50 mg phenytoin equivalent. This code identifies a specific parenteral anticonvulsant formulation used in acute seizure management and other clinical situations requiring rapid phenytoin administration.
Service Type: Drug administration, parenteral injection
Typical Site of Service: Hospital inpatient, emergency department, or other acute care settings where intravenous anticonvulsant therapy is administered
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 68-year-old male with a history of ischemic stroke and atrial fibrillation presents to the emergency department with a generalized tonic-clonic seizure that does not respond to initial benzodiazepine therapy. The emergency medicine team elects to administer an anticonvulsant intravenous loading dose. Pharmacy prepares Q2009 (Injection, fosphenytoin, 50 mg phenytoin equivalent) and the medication is administered via IV push or short infusion in the ED or inpatient setting. Nursing documents dose in milligram phenytoin equivalents, infusion rate, site of administration, and any immediate adverse reactions. The clinical workflow includes physician order entry, allergy and medication reconciliation, pharmacy verification and dose conversion (fosphenytoin to phenytoin equivalents), administration by a nurse, monitoring of vital signs and cardiac rhythm during and after infusion, and subsequent neurology consultation for seizure management and ongoing anticonvulsant therapy planning.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when administration required substantially greater resources or complexity than typical (document justification). |
23 |