Summary & Overview

CPT 33953: Peripheral Cannula Insertion for Extracorporeal Circulation, Pediatric

CPT code 33953 denotes the open surgical insertion of a peripheral cannula for extracorporeal circulation in children from birth through five years. It captures a specialized pediatric surgical procedure used to establish cardiopulmonary bypass or other extracorporeal support in very young patients. Nationally, accurate coding for 33953 matters for clinical documentation, resource planning, and payment for high-acuity pediatric cardiac and surgical services.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a concise overview of clinical context, common billing considerations, and payer coverage patterns where available. Readers will find benchmarks for utilization and reimbursement (where reported), coding guidance tied to procedure definition, and notes on typical sites of service. The summary also highlights common modifiers and related administrative considerations when present in claims data.

This resource is intended for coding professionals, hospital billing teams, and policy analysts seeking a national perspective on how CPT code 33953 is used and reimbursed across major payers, and what clinical scenarios typically prompt use of this code. Data not available in the input is noted where relevant in accompanying sections.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare33953CPTpediatric surgeryextracorporeal circulationvascular accesscardiopulmonary bypassoperating roomsurgical coding

Billing Code Overview

CPT code 33953 describes the insertion of a peripheral cannula for extracorporeal circulation performed through an open surgical approach in a child from birth through five years of age. This procedure establishes vascular access for cardiopulmonary bypass or other extracorporeal support in young pediatric patients.

Service type: Surgical vascular access for extracorporeal circulation
Typical site of service: Operating room or surgical suite in an acute care hospital setting

Clinical & Coding Specifications

Clinical Context

A typical patient is an infant or young child (birth through five years) requiring cardiopulmonary support for cardiac surgery or extracorporeal membrane oxygenation (ECMO). The child may present from the neonatal intensive care unit or pediatric intensive care unit with congenital heart disease, severe respiratory failure, septic shock with cardiac compromise, or postcardiotomy cardiac dysfunction. Preoperative workflow includes pediatric cardiac surgery and anesthesia evaluation, informed consent from guardians, baseline labs and imaging, and coordination with perfusion and ECMO teams. In the operating room or sterile procedure area, a pediatric cardiac surgeon performs an open surgical approach to expose a peripheral vessel (commonly the femoral or carotid artery and vein in this age group) and inserts the cannulae for extracorporeal circulation. The perfusionist connects the cannulae to the extracorporeal circuit and initiates support while the surgical or critical care team manages anticoagulation, hemodynamic stabilization, and ventilatory settings. Post-procedure workflow includes intensive monitoring in a pediatric ICU, ongoing anticoagulation management, cannula site care, and planning for decannulation or surgical revision as indicated.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier (default)	Use when no special circumstances apply.
`11`	Physician or other qualified health care professional services	Use when reporting the primary professional service for the procedure.
`22`	Increased procedural services	Use when substantial additional work beyond the typical is performed (document rationale).
`23`	Unusual anesthesia	Use when general anesthesia is contraindicated and an unusual anesthesia circumstance is required.
`52`	Reduced services	Use when the procedure is partially reduced or not completed (document reason).
`53`	Discontinued procedure	Use when the procedure is started but stopped due to extenuating circumstances.
`62`	Two surgeons	Use when two surgeons of different specialties work together as primary surgeons.
`73`	Discontinued outpatient hospital/ASC procedure prior to anesthesia	Use when the outpatient procedure is cancelled after patient preparation but before anesthesia.
`78`	Unplanned return to the operating/procedure room by same physician following initial procedure for a related procedure during the postoperative period	Use for unplanned return trips to OR for complications related to the initial cannulation.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when an unrelated procedure is performed during the global period.
`80`	Assistant surgeon	Use when an assistant surgeon (not co-surgeon) participates.
`81`	Minimum assistant surgeon	Use when minimal assistance is provided.
`82`	Assistant surgeon (when qualified resident surgeon not available)	Use when a surgical assistant is required because a qualified resident is not available.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for surgical assistance	Use when an approved advanced practice clinician provides surgical assistance.

Taxonomy Code	Specialty	Notes
208100000X	Pediatric Cardiac Surgery	Surgeons who perform pediatric open cannulation for extracorporeal circulation.
207K00000X	Thoracic Surgery	Pediatric thoracic/cardiothoracic surgeons involved in ECMO and cardiopulmonary bypass access.
208000000X	Pediatric Surgery	Pediatric surgeons who manage neonates and infants requiring ECMO access.
173E00000X	Perfusionist	Clinical perfusion specialists operate and manage the extracorporeal circuit (listed as allied health rather than physician taxonomy).
2084P0800X	Pediatric Critical Care Medicine	Intensivists who coordinate perioperative and ECMO management in the ICU.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
Data not available in the input.	Data not available in the input.	Data not available in the input.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`33952`	Insertion of peripheral cannulae for extracorporeal circulation; patient age 6 years or older	Similar procedure for older pediatric patients; selected when patient age is outside birth through five years.
`33954`	Removal of cannulae for extracorporeal circulation; patient from birth through five years of age	Procedure performed when decannulation from extracorporeal support is clinically indicated after `33953`.
`33955`	Removal of cannulae for extracorporeal circulation; patient 6 years or older	Related decannulation procedure for older pediatric patients.
`93451`	Right heart catheterization including measurement(s) of oxygen saturation and cardiac output	May be performed preoperatively or postoperatively to assess hemodynamics in complex cardiac patients.
`36556`	Insertion of non-tunneled centrally inserted central venous catheter; age 5 years or younger, for acute access	Common alternative or adjunct vascular access for infusion and monitoring when central access is needed but not ECMO cannulation.