Summary & Overview
CPT 32851: Single Lung Replacement Without Cardiopulmonary Bypass
CPT code 32851 represents single-lung replacement performed without cardiopulmonary bypass using a donor lung from a cadaver or living donor. This high-complexity surgical code captures a critical, resource-intensive organ transplant procedure with major implications for hospital surgical services, transplant programs, and national organ allocation policy. The code is relevant to inpatient surgical billing and postoperative care pathways.
Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and service setting, payer coverage patterns and benchmarks where available, common modifiers and billing considerations, and related coding references. The content summarizes typical sites of service and the nature of the procedure, highlights policy and reimbursement factors that commonly affect transplant billing, and outlines areas where payers often apply prior authorization, medical necessity review, or bundled payment arrangements.
This publication is intended for billing professionals, transplant program administrators, and policy analysts seeking a national-level briefing on coding, billing context, and payer engagement for single-lung transplantation without cardiopulmonary bypass.
Billing Code Overview
CPT code 32851 describes a surgical procedure to replace a single lung without the use of cardiopulmonary bypass, using a healthy lung from a cadaveric or living donor. This procedure is a form of lung transplantation performed without extracorporeal circulation.
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Service type: Surgical organ transplant (single lung replacement)
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Typical site of service: Inpatient hospital operating room with postoperative inpatient care
Clinical & Coding Specifications
Clinical Context
A typical patient is a 45–65-year-old with end-stage unilateral lung disease (for example, advanced idiopathic pulmonary fibrosis, cystic fibrosis with localized severe disease, or bronchiolitis obliterans after hematopoietic stem cell transplant) who has progressive respiratory failure despite maximal medical therapy and is evaluated for lung transplantation. The patient undergoes preoperative donor and recipient matching, multidisciplinary transplant committee review, and cardiothoracic surgical planning. On the day of surgery the patient is brought to an operating room equipped for thoracic transplantation. General anesthesia with endotracheal intubation and invasive monitoring is used. The surgical team performs a single-lung transplant without the use of cardiopulmonary bypass: the diseased lung is exposed via thoracotomy or clamshell incision, native pulmonary vessels and bronchus are divided and prepared, the donor lung is implanted with sequential anastomoses of pulmonary vein/atrium cuff, pulmonary artery, and bronchus, and hemostasis is achieved. Postoperative care includes ICU monitoring, ventilatory support as needed, immunosuppression initiation, and surveillance for primary graft dysfunction and infection. Typical site of service is an inpatient acute care hospital with a specialized cardiothoracic transplant program and intensive care unit. Service type: Major thoracic surgical procedure (single-lung transplant) performed without cardiopulmonary bypass.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default/No modifier | Use when no other modifier applies and a single-claim line reports the full procedure without special circumstances. |
22 | Increased procedural services | Use when the single-lung transplant required substantially greater work or complexity than typical (must be documented). |
23 | Unusual anesthesia | Use when the procedure was performed under general anesthesia but anesthesia was medically contraindicated and a documented reason exists. |
26 | Professional component | Not typically applicable to surgical transplant; use only if a separately reportable professional component exists (rare). |
50 | Bilateral procedure | Not applicable to a single-lung transplant; included for completeness when coding bilateral lung procedures (do not apply to 32851). |
62 | Two surgeons | Use when two surgeons with distinct skills performed portions of the transplant and documentation supports concurrent co-surgery. |
66 | Surgical team | Use when a surgical team approach is employed and hospital/payer rules allow team reporting. |
73 | Discontinued outpatient procedure prior to anesthesia | Use when the transplant was cancelled after anesthesia was administered and the patient was transferred back to inpatient status (rare for transplant). |
78 | Unplanned return to the operating room | Use when a return to the OR for a related procedure occurs during the global period. |
79 | Unrelated procedure during global period | (Not in provided list but commonly referenced) Not listed among provided modifiers; omitted. |
52 | Reduced services | Use when the procedure was partially reduced or not completed as documented. |
53 | Discontinued procedure | Use when the transplant was started but aborted for documented clinical reasons. |
81 | Minimum assistant surgeon | Use when an assistant surgeon provided only minimal assistance, if assistant surgeon services are reported. |
82 | Assistant surgeon (when qualified resident not available) | Use when a non-physician resident substitute or assistant surgeon was required and documentation supports it. |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery | Use when an APP served as the assistant at surgery and payer allows reporting. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
336E00000X | Thoracic Surgery | Cardiothoracic/thoracic surgeons perform technical aspects of lung transplantation and anastomoses. |
207L00000X | General Surgery | General surgeons with transplant specialization may participate in perioperative care and donor procurement in some programs. |
2084P0800X | Critical Care Medicine | Intensivists manage immediate postoperative critical care, ventilator management, and hemodynamics. |
2084N0400X | Pulmonary Disease | Pulmonologists perform pre- and post-transplant evaluation, donor–recipient matching, and long-term care. |
208000000X | Transplant Surgery | Surgeons specializing in transplantation coordinate donor procurement and complex transplant procedures. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
J84.10 | Pulmonary fibrosis, unspecified | Common indication for single-lung transplant when disease is advanced and localized. |
J44.9 | Chronic obstructive pulmonary disease, unspecified | COPD with end-stage unilateral disease may lead to consideration for transplant. |
J98.4 | Other disorders of lung | Includes a range of severe chronic lung disorders that may necessitate transplantation. |
Z94.2 | Lung transplant status | Used postoperatively to indicate the patient has undergone lung transplantation for surveillance and follow-up care. |
T86.82 | Lung transplant rejection | Used if patient develops rejection; relevant for post-transplant complications and management. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
32666 | Thoracotomy, with surgical repair/reconstruction of pulmonary artery and/or vein | Performed when vascular reconstruction is required during transplant or in managing complex pulmonary vascular anastomoses. |
32820 | Thoracotomy, with lobectomy, single or multisegmental | May be performed in the donor operation or when native lung resection is required as part of recipient exposure. |
32830 | Thoracotomy, with pneumonectomy, without thoracoplasty | Related to removal of the native lung when a pneumonectomy approach is used prior to implantation of the donor lung. |
33945 | Cardiac surgery procedures (example: cardiopulmonary bypass) | Not directly performed for 32851 (procedure is without cardiopulmonary bypass) but documented when bypass is used in complex cases or conversions. |
36415 | Collection of venous blood by venipuncture | Perioperative laboratory monitoring and crossmatch testing are coded separately; commonly performed pre- and post-transplant. |
88305 | Surgical pathology, gross and microscopic exam | Pathologic evaluation of explanted lung tissue for infection, malignancy, or other pathology may be reported separately. |