Summary & Overview
CPT 36299: Unlisted Vascular Injection Procedure
Headline: CPT code 36299 designated for unlisted vascular injection procedures. Lead: CPT code 36299 is used to report vascular injections or vascular access procedures that lack a specific CPT code. It serves as a catch‑all for novel or uncommon vascular injection services and is relevant to hospitals, ambulatory surgery centers, and outpatient practices.
CPT code 36299 represents an unlisted vascular injection or vascular access procedure. Nationally, unlisted codes matter because they require additional documentation and often prompt individualized review for medical necessity and reimbursement. Use of 36299 may occur when a provider performs a vascular injection technique or access approach that is not described by existing CPT codes.
Key payers covered in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. These payers commonly review unlisted codes with supporting operative reports, procedure notes, and rationale for why a listed code does not apply.
Readers will learn the clinical and billing context for 36299, including typical service settings, documentation expectations, and the role of supplementary materials for claims adjudication. The publication covers benchmarking considerations, payer review practices, and the clinical scenarios that typically prompt use of an unlisted vascular injection code. Data not available in the input.
Billing Code Overview
CPT code 36299 is an unlisted vascular introduction/injection code used to report a vascular injection or vascular access procedure that does not have a specific CPT code. This code is intended for atypical or novel vascular injection services that fall outside existing, specifically enumerated vascular CPT codes.
Service Type: Vascular injection / vascular access procedure
Typical Site of Service: Hospital outpatient department, ambulatory surgery center, or other procedural setting where vascular injections are performed
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with progressive lower extremity rest pain and nonhealing foot ulcers is referred to interventional radiology for diagnostic and therapeutic peripheral angiography. The procedure includes selective vascular catheterization and contrast injection into atypical or small-caliber distal vessels for diagnostic opacification or delivery of vasodilator/therapeutic agents where no specific CPT angiographic injection code applies. The patient arrives to an outpatient hospital-based interventional suite or ambulatory surgery center after pre-procedure evaluation. Sedation is administered per institutional protocol; vascular access is obtained (commonly common femoral artery or radial artery) and diagnostic angiography is performed. When an injection into an unusual vascular territory or a specialized technique is required that is not described by a specific CPT code, the reporting clinician uses 36299 to capture the unlisted vascular injection. Post-procedure hemostasis is achieved and the patient is observed in recovery before discharge or admission based on clinical status. Documentation includes indication, vessels injected, contrast volume, number of injections, fluoroscopic images, therapeutic maneuvers performed, and reason for using an unlisted injection code.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when documentation supports substantially greater effort or complexity than typical for an unlisted vascular injection. |