50547

⚕️CPT Code 50547: Laparoscopic Donor Nephrectomy

CPT 50547 is a CPT code that describes a minimally invasive surgical procedure to remove a healthy kidney from a living donor for the purpose of transplantation. This laparoscopic approach involves removing the kidney through small incisions, and the code specifically includes the critical step of cold preservation to maintain the organ’s viability until it can be transplanted into the recipient.^[1][10]

Clinical Description

Laparoscopic donor nephrectomy is a specialized procedure performed on a living individual who is voluntarily donating a kidney. The minimally invasive technique offers significant benefits to the donor, including reduced postoperative pain, shorter hospital stays, faster recovery, and smaller scars compared to traditional open surgery.^[1][10]

During the procedure:^[1][10]

1. Patient Positioning and Preparation: The donor is positioned supine (on their side) under general anesthesia. The surgical site is prepared with antiseptic solutions.
2. Incision and Access: The surgeon makes several small incisions (typically 3-4) below the rib cage. The abdomen is inflated with carbon dioxide (pneumoperitoneum) to create a working space for the surgeon to visualize and access the internal organs.^[1]
3. Laparoscope Insertion: A laparoscope (a thin tube equipped with a camera and light) is inserted through one incision, providing visualization of the surgical field on video monitors.^[1]
4. Mobilization and Dissection: The surgeon identifies and incises the lateral line of Toldt to mobilize the peritoneum over the kidney. The colon is carefully mobilized to gain access to the kidney, and various ligaments and fascia are divided to expose the renal hilum, where the renal artery and vein are located.^[1] Specialized laparoscopic instruments are inserted through the other incisions to carefully disconnect the ureter and blood vessels (renal artery and vein), ensuring the vascular pedicle is not damaged and the kidney remains viable for transplantation.^[1][10]
5. Kidney Removal and Preservation: Once the kidney is fully mobilized and detached from its attachments, it is placed in a sterile preservation bag. The bag is removed through a slightly larger incision (often a Pfannenstiel incision or an extension of one of the port sites). Immediately upon removal, the kidney is flushed with a cold preservation solution to slow metabolic processes and reduce the risk of damage before transplantation. This step is included in the code and is not separately billable.^[1][10]

Key Components and Includes

• Laparoscopic Donor Nephrectomy: Complete removal of a healthy kidney from a living donor using minimally invasive techniques.^[1][10]
• Cold Preservation: The work of flushing and preserving the kidney immediately after removal is bundled into this code.^[1][10]
• Living Donor: The procedure is performed on a living individual, not a cadaveric donor.
• Minimally Invasive Approach: The laparoscopic technique is the defining characteristic of this code, distinguishing it from open donor nephrectomy.

Excludes and Differentiating Codes

It is critical to differentiate 50547 from other nephrectomy codes based on the indication for surgery and the approach used.^[10]

• 50320 (Open Donor Nephrectomy): Use this code for an open surgical approach to remove a kidney from a living donor. This is the open counterpart to 50547.
• 50546 (Laparoscopic Nephrectomy): Use this code for a laparoscopic nephrectomy performed for disease (e.g., non-functioning kidney, benign disease), not for living donation.^[10]
• 50545 1 (Laparoscopic Radical Nephrectomy): Use this code for a laparoscopic radical nephrectomy performed for malignancy, which includes lymph node dissection.^[10]
• 50543 (Laparoscopic Partial Nephrectomy): Use this code when only a portion of the kidney is removed (e.g., for a small tumor), not the entire organ.^[10]
• 50548 (Laparoscopic nephroureterectomy): Use this code when the entire kidney and ureter are removed (e.g., for upper tract urothelial carcinoma).^[10]
• 50544 (Laparoscopic Pyeloplasty): Use this code for laparoscopic repair of the ureteropelvic junction obstruction, not nephrectomy.
• 50541 (Laparoscopic Ablation of Renal Cysts): Use this code for laparoscopic ablation of renal cysts, not nephrectomy.
• Preparation and Maintenance of Allograft: The work of preparing the kidney for transplantation on the recipient side (benchwork) is not included in this code.

Code Tree and Hierarchy

This tree helps visualize where 50547 fits within the spectrum of laparoscopic kidney procedures.

flowchart TD
    A["Laparoscopic Procedures on the Kidney"] --> B["50541 Ablation of renal cysts"]
    A --> C["50543 Partial nephrectomy"]
    A --> D["50544 Pyeloplasty"]
    A --> E["Nephrectomy Procedures"]
    E --> F["50545 Radical nephrectomy<br>(with lymphadenectomy)"]
    E --> G["50546 Nephrectomy<br>(for benign disease)"]
    E --> H["50547 DONOR NEPHRECTOMY<br>(from living donor with cold preservation)"]
    E --> I["50548 Nephroureterectomy<br>(kidney + total ureter)"]
    A --> J["50549 Unlisted laparoscopy procedure, renal"]

Modifiers and Billing Nuances

Several modifiers may be applicable to 50547 depending on the specific circumstances of the procedure.^[5]

Modifier	Description	Application to 50547
-22	Increased Procedural Services	Use when the work required is substantially greater than typical (e.g., excessive bleeding, significant adhesions, unusual anatomy). Requires exceptional documentation.[5]
-51	Multiple Procedures	Use when 50547 is performed during the same surgical session as another distinct procedure. For Medicare, do not append modifier 51, as the carrier applies it automatically.[5]
-59	Distinct Procedural Service	Use to indicate that a procedure or service was distinct or independent from other services performed on the same day. Rarely used with donor nephrectomy.[5]
-62	Two Surgeons	Use when two surgeons (e.g., a urologist and a transplant surgeon) work together as primary surgeons to perform distinct parts of the procedure. Both surgeons report 50547 with modifier 62.[5]
-66	Surgical Team	Use for highly complex procedures requiring several physicians of different specialties. This is rare for donor nephrectomy but may apply in exceptional circumstances.[5]
-78	Unplanned Return to OR	Use if the patient needs to return to the operating room for a related procedure during the postoperative period (e.g., to control bleeding).[5]
-80	Assistant Surgeon	Use when a physician provides assistant-at-surgery services throughout the procedure.[4][5][9]
-81	Minimum Assistant Surgeon	Use when an assistant is required for a minimal portion of the procedure.[5][9]
-82	Assistant Surgeon (resident not available)	Use when an assistant surgeon is necessary and a qualified resident is not available in a teaching setting.[4][5][9]
-AS	Non-Physician Assistant	Use for a PA, NP, or RNFA assisting in surgery.[9]

Assistant Surgeon (Modifier 80) Payability

The complexity of laparoscopic donor nephrectomy often justifies the use of an assistant surgeon. Payability depends on the Medicare indicator and payer policy.

• Assistant Modifiers: See table above for correct modifier usage.^[4][5][9]
• Medicare Payment Indicators: To determine whether assistant surgeon services are payable for 50547, you must check the Medicare Physician Fee Schedule Database (MPFSDB) “Asst Surg” indicator:^[4]
  • Indicator 0: Payment restriction applies. Supporting documentation describing medical necessity must be submitted with the claim.
  • Indicator 1: Statutory payment restriction. Assistants at surgery will not be paid.
  • Indicator 2: Payment restriction does not apply. Assistants at surgery may be paid.
  • Indicator 9: Concept does not apply (the procedure is not a surgery).
• Documentation Requirements: When an assistant is used, the operative report should clearly document the assistant’s role, specific tasks performed, and why their involvement was medically necessary. For teaching hospitals, a statement that no qualified resident was available or that exceptional medical circumstances exist is required.^[4]

Work RVU (wRVU) and Reimbursement

The Work Relative Value Units (wRVU) reflect the physician’s work. This value is updated annually by the CMS.

• 2026 Reference: The exact value for 50547 should be obtained from the most recent CMS Physician Fee Schedule (PFS) Final Rule or the AMA RBRVS DataManager. Reimbursement rates can be verified by consulting the MPFS and the relevant Medicare Administrative Contractor (MAC) for your region.^[5]
• Reimbursement Factors: Final payment is determined by multiplying the total RVUs (Work, Practice Expense, and Malpractice) by the Geographic Practice Cost Index (GPCI) for your area and the national conversion factor.

ICD-10 Crosswalk and HCC Association

The following are common ICD-10-CM diagnoses associated with living kidney donation.^[3]

ICD-10-CM Code	Description	HCC Applicability (Risk Adjustment)
Z52.4	Kidney donor (most common)	No (0)
Z00.5	Encounter for examination of potential donor of organ and tissue	No (0)
Z53.31	Laparoscopic surgical procedure converted to open procedure	No (0)
Z52.89	Donor of other specified organs or tissues	No (0)
Z52.9	Donor of unspecified organ or tissue	No (0)

Note on HCCs:

Donor codes are status codes that indicate a person is a living donor. They are not hierarchical condition categories (HCCs) that trigger risk adjustment payments in Medicare Advantage models. They are captured for coding completeness but do not affect the risk score.^[3]

Inpatient MS-DRG Assignment

As a major laparoscopic procedure, 50547 is performed in an inpatient hospital setting. It will map to one of the following Medicare Severity-Diagnosis Related Groups (MS-DRGs), depending on the presence of comorbidities or complications (MCC/CC).

• MS-DRG 652: Kidney Transplant (for the recipient’s admission)
• MS-DRG 673: Other Kidney and Urinary Tract Procedures with MCC (for the donor’s admission)
• MS-DRG 674: Other Kidney and Urinary Tract Procedures with CC (for the donor’s admission)
• MS-DRG 675: Other Kidney and Urinary Tract Procedures without CC/MCC (for the donor’s admission)
• Note: The donor’s admission is typically for the nephrectomy procedure, while the recipient’s admission is for the transplant. These are separate admissions and billed separately. For donor admissions, MS-DRGs 673-675 apply based on complications/comorbidities.

Coding Examples and Scenarios

Example 1: Standard Laparoscopic Donor Nephrectomy

Scenario: A 35-year-old healthy female donates her kidney to her brother. The surgeon performs a laparoscopic donor nephrectomy, removes the kidney through a small incision, and flushes it with cold preservation solution before handing it off to the transplant team. Coding:

• 50547 (Laparoscopy, surgical; donor nephrectomy [including cold preservation], from living donor)
• Z52.4 (Kidney donor)

Example 2: Laparoscopic Donor Nephrectomy Converted to Open

Scenario: During a laparoscopic donor nephrectomy, the surgeon encounters significant bleeding from the renal vein that cannot be controlled laparoscopically. The procedure is converted to an open approach to ensure donor safety. Coding:

• 50320 (Donor nephrectomy; open, from living donor)
• Z52.4 (Kidney donor)
• Z53.31 (Laparoscopic surgical procedure converted to open procedure)
• Rationale: When a laparoscopic procedure is converted to open, you should report the open code only, as the open procedure includes the work of the laparoscopic approach. Modifier -22 may be considered if the conversion added significant complexity.

Example 3: Co-Surgeons

Scenario: A urologist and a transplant surgeon work together as co-surgeons to perform a laparoscopic donor nephrectomy. The urologist performs the laparoscopic dissection, and the transplant surgeon performs the kidney extraction and cold preservation. Coding:

• 50547 - 62 (for the Urologist)
• 50547 - 62 (for the Transplant Surgeon)
• Rationale: Modifier -62 indicates that two primary surgeons were required due to the complexity of the case and the distinct skills each brought to the procedure.^[5]

Example 4: Incorrect Coding of Disease-Related Nephrectomy

Scenario: A patient with a non-functioning kidney due to chronic obstruction undergoes a laparoscopic nephrectomy. The coder reports 50547. Coding:

• Correct: 50546 (Laparoscopy, surgical; nephrectomy, including partial ureterectomy)
• Incorrect: 50547
• Rationale: 50547 is specifically for living donor nephrectomy. A nephrectomy performed for disease should be coded with the appropriate disease-related nephrectomy code.^[10]

References

¹ Coding Ahead. “CPT® Code 50547.” (2026). ² StreamlineMD. “2026 CPT Changes: Interventional, Diagnostic Imaging, Cardiology and Vascular Surgery.” (2025). ³ EMedCodes. “ICD-10-CM Code Z52.4 - Kidney donor.” ⁴ DEX Diagnostics Exchange. “CPT Modifier 80.” (2025). ⁵ MD Clarity. “CPT Code 50547: What It Is, Modifiers, Reimbursement.” ⁶ EmblemHealth. “Preauthorization Requirements - Changes Starting Jan. 13, 2026.” (2025). ⁷ Wellpoint. “Professional system updates for 2026.” (2026). ⁸ Deutsche Krankenhaus Gesellschaft. (Unrelated German hospital data - not used). ⁹ Priority Health. “Modifiers 80, 81, 82, assistant at surgery.” (2025). ¹⁰ Coding Ahead. “How To Use CPT Code 50547.” (2025).