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    OpenPayerBilling CodesRenal Transplantation ProceduresCPT cpt-50323-cadaver-donor-kidney-back-table-preparation
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    CPT 50323: Donor Kidney Back Table Preparation (Cadaver)

    CPT code 50323 describes the standard back table preparation of a cadaver donor kidney performed by the provider to make the organ ready for transplantation; this is a surgical preparation service typically performed in an operating room or transplant center as part of kidney transplant surgery and is categorized as organ procurement/implant preparation.

    For related coverage guidance, see recent payer policy updates: Vafseo (vadadustat) for anemia in CKD on dialysis, Metabolic Disorders - Cysteamine (Oral) Products for Individual and Family Plans, Kerendia (finerenone) — Coverage Criteria.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient scenario involves procurement and preparation of a cadaveric donor kidney for transplantation. In a tertiary transplant center, an organ procurement team receives a recovered donor kidney from an outside facility or from the hospital’s deceased donor program. The organ arrives on ice in preservation solution; the transplant surgeon or designated surgical assistant performs a standard back-table preparation in the operating room or a dedicated sterile back-table area. The workflow includes inspection, removal of excess perinephric fat, trimming and ligation of donor vessels, assessment of ureter length and viability, reconstruction or trimming of the renal artery/vein as needed, perfusion flush checks, and placement of a preservation cuff or stent when indicated. After preparation, the kidney is packaged and transported to the recipient operating room for implantation or handed directly to the implanting surgeon when recipient surgery is concurrent. Documentation includes donor identifiers, ischemia times, details of any anatomic variants or repairs, and any unusual circumstances that might affect organ function.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    50320Procurement of one kidney from cadaver, including cold preservation when performedPerformed during organ recovery; 50323 is the back‑table preparation that follows procurement.
    50325Preparation of multivisceral graft(s) for transplant (eg, liver, stomach, pancreas) — note specific code for kidneys not covered by this codeRelated when multiple organs are recovered and prepared; documents preparation of other organs in concurrent recoveries.
    50250Donor nephrectomy, including cold preservation, from living donor (open)Relates to donor kidney procurement workflow for living donors; contrasts with cadaveric preparation coded by 50323.
    50547Renal transplant, from cadaver donor; with recipient nephrectomy when performedFollows 50323 in workflow when the prepared donor kidney is implanted into the recipient.
    36415Collection of venous blood by venipunctureOften performed perioperatively for crossmatch, serologies, and donor assessments prior to or during procurement and preparation.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    2080P0206X
    163W00000X
    367A00000X
    2251H1200X
    163WI0500X
    261QM0801X
    1041S0200X
    207X00000X

    Related Payer Policy Updates

    Specialty: Nephrology1 / 3

    10 rows

    PolicyPayerEffective Date
    Vafseo (vadadustat) for anemia in CKD on dialysisCigna2026-08-15
    Metabolic Disorders - Cysteamine (Oral) Products for Individual and Family PlansCigna2026-08-15
    Kerendia (finerenone) — Coverage CriteriaBlue Cross Blue Shield - Iowa2026-08-05
    Voyxact (sibeprenlimab-szsl) — Prior authorization / medical necessity for primary IgA nephropathyColorado Rocky Mountain Health Plans2026-08-01
    Oxlumo (lumasiran) and Rivfloza (nedosiran) — Coverage Criteria (Ohio)Colorado Rocky Mountain Health Plans2026-08-01
    Korsuva (difelikefalin) — Medical Benefit Drug Coverage Criteria (Ohio)Colorado Rocky Mountain Health Plans2026-08-01
    Complement Inhibitors - EmpaveliCigna2026-08-01
    Tolvaptan (Jynarque)Cigna2026-08-01
    Nephrology - Filspari (sparsentan) coverageCigna2026-08-01
    Rivfloza (nedosiran) prior authorization for PH1UnitedHealthcare2026-08-01

    Related Codes

    CPT-50300-NEPHRECTOMY-KIDNEY-REMOVAL

    CPT 50300: Nephrectomy, Kidney Removal

    CPT-50320-NEPHRECTOMY-KIDNEY-REMOVAL

    CPT 50320: Nephrectomy, Removal of Kidney or Partial Kidney

    CPT-50325-DONOR-KIDNEY-BACK-TABLE-PREPARATION

    CPT 50325: Living Donor Kidney Back Table Preparation

    CPT-50327-RENAL-VEIN-BACKBENCH-RECONSTRUCTION

    CPT 50327: Backbench Venous Reconstruction of Donor Kidney

    CPT-50328-ARTERIAL-ALLOGRAFT-PREPARATION-FOR-KIDNEY-TRANSPLANT

    CPT 50328: Arterial Allograft Preparation for Kidney Transplant

    CPT-50329-RENAL-ALLOGRAFT-PREPARATION-WITH-ARTERIAL-ANASTOMOSIS

    CPT 50329: Renal Allograft Preparation with Arterial Joining

    CPT-50340-NEPHRECTOMY-KIDNEY-REMOVAL

    CPT 50340: Nephrectomy, Kidney Removal

    CPT-50360-KIDNEY-AND-URETER-TRANSPLANTATION

    CPT 50360: Kidney and Ureter Transplantation

    CPT-50365-KIDNEY-TRANSPLANT-WITH-RECIPIENT-NEPHRECTOMY

    CPT 50365: Kidney and Ureter Transplant with Recipient Nephrectomy

    CPT-50370-KIDNEY-ALLOGRAFT-EXPLANTATION-DUE-TO-REJECTION

    CPT 50370: Removal of Failed Transplanted Kidney

    Showing 1–10 of 11

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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