CPT code 33948 represents the daily management of venovenous (VV) extracorporeal membrane oxygenation (ECMO) or extracorporeal life support (ECLS), a specialized critical care service for patients with severe respiratory failure such as acute respiratory distress syndrome (ARDS), cardiopulmonary insufficiency, or as a bridge to lung transplantation. Nationally, this code captures high-acuity, resource-intensive management that affects hospital critical care workflows, staffing, and reimbursement for ECMO programs.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for VV ECMO management, payer coverage considerations, common modifier usage, and where CPT code 33948 fits within service lines for acute inpatient critical care. The publication outlines benchmarks and policy-relevant topics such as coding placement within intensive care episodes, implications for hospital billing, and alignment with critical care staffing and program documentation.

This summary is intended to inform hospital coding teams, revenue cycle leaders, clinical directors of ECMO programs, and policy analysts about the role of CPT code 33948 in classifying daily VV ECMO/ECLS management and its relevance to national payer practices.