Summary & Overview

CPT 33958: Percutaneous Repositioning of Peripheral Cannula for Extracorporeal Circulation

Headline: CPT code 33958 defines fluoroscopically guided percutaneous repositioning of a peripheral cannula for extracorporeal circulation in children aged six years and older. This code captures a targeted interventional procedure that supports extracorporeal life support and other cardiopulmonary interventions in pediatric patients.

Lead: CPT code 33958 is a procedure-level code for repositioning a peripheral cannula via a percutaneous incision under fluoroscopic guidance in pediatric patients six years and older. The code is relevant for hospitals, pediatric cardiac centers, interventional radiology teams, and payers managing coverage for extracorporeal circulatory support procedures.

Why it matters: The procedure is clinically significant because proper cannula positioning is essential for effective extracorporeal circulation, reducing complications and ensuring adequate support during cardiopulmonary therapies. Accurate coding supports appropriate claims processing, quality measurement, and resource planning for pediatric interventional services.

Payers covered: Analysis commonly considers national payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

What readers will learn: The publication summarizes the clinical context for CPT code 33958, typical sites of service, common modifiers and billing considerations, and the payer landscape. Readers will find benchmarks and policy-relevant guidance where available,clarity on service definition and documentation expectations, and an overview of billing nuances affecting reimbursement and authorization workflows.

Data availability: Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare33958CPTpediatric interventionalextracorporeal circulationpercutaneous cannulafluoroscopic guidancecardiac catheterizationinterventional radiology

Billing Code Overview

CPT code 33958 describes the repositioning of a peripheral cannula through a percutaneous incision to facilitate extracorporeal circulation in a child six years and older. The procedure includes the use of fluoroscopic guidance as part of the intervention.

Service type: Percutaneous vascular cannula repositioning for extracorporeal circulation
Typical site of service: Inpatient or outpatient interventional radiology or cardiac catheterization suite within a hospital setting, or pediatric surgical suite

Clinical & Coding Specifications

Clinical Context

A typical scenario is a pediatric patient aged six years or older who requires extracorporeal circulation support during a cardiac surgical or interventional procedure. Example: a 7-year-old with complex congenital heart disease who arrives to the operating room for corrective surgery and requires repositioning of a peripheral cannula to optimize cardiopulmonary bypass access. The clinical workflow includes preoperative assessment by pediatric cardiac surgery and anesthesia teams, placement of a peripheral cannula through a percutaneous incision, intraoperative fluoroscopic guidance to confirm and reposition the cannula tip, hemodynamic monitoring while connecting to the extracorporeal circuit, and post-procedure imaging and ICU transfer for continued cardiopulmonary support and monitoring. Documentation should note age (≥6 years), percutaneous approach, fluoroscopic guidance, cannula repositioning maneuvers, and whether the procedure occurred as part of an operative session or standalone vascular access adjustment.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier (per local payer use)	Use when no special circumstances apply and payer requires a placeholder for an unmodified claim code.
`11`	Primary procedure	Use when this service is the primary procedure performed during the encounter.
`22`	Increased procedural services	Use when substantially greater work than typical is documented (e.g., unusually difficult repositioning).
`23`	Unusual anesthesia	Use if general anesthesia was required unexpectedly for non-OR repositioning when anesthesia services were unusual.
`52`	Reduced services	Use when the procedure was attempted but substantially reduced or not completed.
`53`	Discontinued procedure	Use when the procedure was started but terminated due to patient condition or safety concerns.
`62`	Two surgeons	Use when two surgeons with distinct specialties are documented as performing separate portions of the procedure.
`66`	Surgical team	Use when a documented surgical team approach was required (e.g., complex pediatric cardiac team).
`78`	Unplanned return to OR	Use when the patient returns to the operating room for a related, unplanned procedure during the global period.
`80`	Assistant surgeon	Use when an assistant surgeon is documented and the payer accepts this modifier for payment.
`81`	Minimum assistant surgeon	Use when minimal assistance is documented and payer distinguishes level of assistance.
`82`	Assistant surgeon (when qualified resident not available)	Use when an assistant surgeon is required because a qualified resident is not available.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for Medicare	Use when one of these clinicians performs or assists and Medicare requires `AS`.
`ET`	Educational/training experience (payer-specific)	Use when procedure is part of an approved training program and payer recognizes the modifier.

Taxonomy Code	Specialty	Notes
`208100000X`	Pediatric Cardiac Surgery	Most common specialty performing cannula repositioning during pediatric extracorporeal support.
`207P00000X`	Pediatric Cardiology	Involved in pre/post procedure planning and intraoperative guidance for cannulation.
`207K00000X`	Interventional Cardiology	Performs fluoroscopically guided vascular procedures and may assist with cannula positioning.
`207L00000X`	Cardiothoracic Surgery	Performs surgical portions of procedures requiring extracorporeal circulation in children.
`364A00000X`	Vascular Surgery	May be involved when peripheral vascular access issues or complications arise.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I34.1`	Nonrheumatic mitral (valve) insufficiency	Valvular lesions may require extracorporeal support during corrective procedures necessitating cannula repositioning.
`Q20.0`	Common arterial trunk	Complex congenital heart defects that often require cardiopulmonary bypass and cannulation management.
`Q21.1`	Atrial septal defect	Surgical or device procedures may require extracorporeal circulation and cannula repositioning for optimal flow.
`Q21.3`	Ventricular septal defect	Frequent indication for pediatric bypass procedures where peripheral cannulation may be used.
`I50.1`	Left ventricular failure	Decompensated cardiac function in children may necessitate extracorporeal support and vascular access adjustments.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`33956`	Cannulation for extracorporeal circulation; initial peripheral cannula placement in a child less than 6 years of age	Describes initial peripheral cannulation for younger children; contrasts by age criteria with `33958`.
`33957`	Cannulation for extracorporeal circulation; initial central cannula placement in a child 6 years or older	Related central cannulation technique often performed in the same operative session when peripheral access is inadequate.
`33959`	Repositioning of central cannula through percutaneous incision to perform extracorporeal circulation in a child less than 6 years of age	Pediatric equivalent for younger patients; `33958` is the ≥6 years peripheral counterpart.
`76937`	Ultrasound guidance for vascular access and/or peripheral insertion of catheter	Often used adjunctively for vascular access localization or confirmation prior to fluoroscopic repositioning.
`77002`	Fluoroscopic guidance for needle placement (when separately reportable)	Reflects the imaging guidance component; `33958` includes fluoroscopic guidance in its description, but additional imaging codes may apply if separate services are documented.