Summary & Overview
CPT 50328: Preparation of Arterial Allograft for Kidney Transplant
CPT code 50328 denotes the preparation of an arterial allograft harvested from a cadaver or living donor kidney to be used in transplantation. This code captures a specialized surgical tissue-preparation service that supports kidney transplant operations and is relevant to transplant centers, hospital billing departments, and payers managing high-cost organ transplant care. Nationally, accurate coding for allograft preparation is important for clinical documentation, resource allocation, and claims adjudication in complex surgical episodes.
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 and typical sites of service, a summary of common billing modifiers and payer interactions, and guidance on where to find related coding and coverage policy details. The publication highlights benchmarks and payment considerations relevant to transplant services and identifies areas where policy updates or payer-specific rules commonly affect claim processing.
The content is intended to equip billing professionals and policy analysts with a concise understanding of the code's clinical purpose, the payer landscape, and the types of documentation and coding elements that commonly accompany billing for arterial allograft preparation in kidney transplantation.
Billing Code Overview
CPT code 50328 describes a surgical preparation procedure in which the provider prepares an arterial allograft from a cadaver or living donor kidney for transplantation. This involves harvesting, preparing, and readying the donor arterial tissue to be used in a kidney transplant procedure.
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Service type: Surgical preparation of an arterial allograft
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Typical site of service: Hospital operating room or transplant surgical suite
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Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves a recipient awaiting renal transplantation who requires preparation of an arterial allograft harvested from a cadaveric or living donor kidney. The vascular surgeon or transplant surgeon receives the donor kidney in the operating room or back-table preparation area. The procedure 50328 is performed to prepare, inspect, trim, and reconstruct the donor renal artery (and any accessory renal arteries) to create an arterial conduit suitable for implantation into the recipient. The workflow includes verification of donor/recipient identifiers, assessment of arterial length and quality, removal of excess perivascular tissue, repair of arterial injuries or luminal irregularities, and construction of any patch, conduit, or arterial anastomotic segment needed for implantation. Sterile back-table instrumentation and microsurgical techniques are commonly used. Documentation includes donor source (cadaveric or living), arterial findings, repairs performed, any ischemia times relevant to organ viability, and personnel involved (surgeon, assistant, perfusionist or transplant coordinator). Typical site of service is an inpatient operating room or transplant center operating suite during kidney procurement or transplant surgery.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Primary procedure | When 50328 is the primary procedure performed during the operative session |
22 | Increased procedural services | When the arterial allograft preparation requires substantially greater effort or complexity than typical (extensive reconstruction) |
52 | Reduced services | When the preparation is partially reduced or abbreviated due to intraoperative findings |
53 | Discontinued procedure | If 50328 is started but discontinued for unforeseen circumstances before completion |
62 | Two surgeons | When two surgeons work together as primary surgeons during allograft preparation |
66 | Surgical team | When a surgical team (multiple specialists) performs the procedure per payer policy |
73 | Discontinued outpatient pre-anesthesia/post-anesthesia | If the procedure is terminated after anesthesia administration but before starting due to patient factors in outpatient settings |
78 | Return to OR for related procedure during global period | When a related return to the operating room for arterial graft revision occurs during the global period |
80 | Assistant surgeon | When an assistant surgeon actively assists during the arterial allograft preparation |
81 | Minimum assistant surgeon | When a minimal-assist surgeon is documented |
82 | Assistant surgeon (when qualified resident not available) | When an assistant is required and no qualified resident is available |
AS | Physician assistant, nurse practitioner, clinical nurse specialist | When an advanced practice provider performed a billable portion of the preparation per payer rules |
QK | Medical direction of two, three, or four CRNAs | If anesthesia management meets medical direction criteria during the transplant and relates to this procedure |
QX | CRNA service: CRNA with physician absence | When a CRNA provides anesthesia without physician anesthesiologist present |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 208000000X | Surgery - General | Surgeons who perform organ procurement and back-table preparation |
| 2080S0127X | Transplant Surgery | Specialists in kidney transplant operations and vascular reconstruction |
| 208D00000X | Surgery - Vascular | Vascular surgeons involved in arterial graft preparation and reconstruction |
| 208000000X-ASSIST | Anesthesiology (support) | Anesthesia providers supporting the transplant operation (documentation for anesthesia modifiers) |
| 363A00000X | Pathology & Laboratory | Perioperative tissue assessment and organ evaluation (support role) |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
N18.5 | Chronic kidney disease, stage 5 | End-stage renal disease requiring kidney transplant; arterial allograft prepared for implantation |
N18.6 | End stage renal disease | Primary indication for kidney transplantation and arterial allograft use |
Z94.0 | Kidney transplant status | Post-transplant patients may require revision or re-preparation of arterial anastomosis in retransplant or complication scenarios |
T86.10 | Unspecified complication of kidney transplant | Vascular complications of kidney transplant that may necessitate arterial graft preparation or revision |
I77.4 | Arteriovenous malformation | Vascular anomalies of donor or recipient prompting complex arterial preparation or reconstruction |
I72.9 | Arterial aneurysm, unspecified | Donor arterial pathology requiring repair or tailoring of the arterial allograft |
Z48.21 | Encounter for aftercare following kidney transplant | Documentation context when arterial revision or graft preparation occurs during follow-up interventions |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
50320 | Transplantation of kidney, from cadaver or living donor (including recipient nephrectomy when performed) | Primary transplant procedure during which 50328 may be performed as part of organ preparation or back-table work prior to implantation |
50330 | Preparation of renal vein allograft for transplantation (cadaver or living donor) | Often performed in conjunction with 50328 to prepare venous conduit and ensure vascular anastomosis compatibility |
38230 | Kidney transplant, organ procurement and transplantation (includes donor nephrectomy and recipient implantation) | Represents the overall transplant workflow; 50328 is a focused back-table vascular prep step within the broader transplant episode |
34830 | Hypothermic machine perfusion of kidney allograft (initial placement) | Used before or after arterial preparation to preserve organ viability and assess perfusion following vascular repairs |
36556 | Placement of a tunneled central venous catheter, with subcutaneous port for dialysis | May be performed pre- or post-transplant in patients requiring perioperative dialysis support or central access for immunosuppression management |