Aetna modified CPB 0596 for liver transplantation, effective March 3, 2026. Here's what changes for billing teams.
Aetna, a CVS Health company, updated its liver transplantation coverage policy under CPB 0596 in the Aetna CPB 0596 Aetna system, affecting CPT codes 47133, 47135, 47140–47147, and newer technology codes 0894T–0896T. This update clarifies medical necessity thresholds by age group, expands the list of covered malignancy indications, and explicitly excludes several HCPCS codes from coverage. If your team bills for liver transplant procedures across cadaveric or living donor cases, this policy touches nearly every code in your charge master for these cases.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Aetna |
| Policy | Liver Transplantation |
| Policy Code | CPB 0596 |
| Change Type | Modified |
| Effective Date | March 3, 2026 |
| Impact Level | High |
| Specialties Affected | Transplant Surgery, Hepatology, Pediatric Surgery, Oncology, Revenue Cycle |
| Key Action | Audit your MELD score documentation and age-based criteria before submitting claims after March 3, 2026 |
Aetna Liver Transplantation Coverage Criteria and Medical Necessity Requirements 2026
The Aetna liver transplantation coverage policy splits medical necessity criteria by patient age. Get this wrong, and you're looking at a claim denial before the claim even reaches clinical review.
For adolescents 12 and older and adults, Aetna covers liver transplantation when the member meets any one of three criteria:
| # | Covered Indication |
|---|---|
| 1 | A Model of End-stage Liver Disease (MELD) score greater than 10 |
| 2 | Approval by the UNOS Regional Review Board |
| 3 | Meeting the transplanting institution's own selection criteria |
For children under 12, the policy defers entirely to the transplanting institution's selection criteria. There's no MELD threshold applied to this group.
Here's the catch. If your adult or adolescent patient has a MELD score of 10 or less and hasn't been approved by the UNOS Regional Review Board, and no institution-level criteria are documented, Aetna subjects the case to full medical necessity review. That's a prior authorization risk point your pre-auth team needs to flag. Make sure every case file hitting this threshold carries documented UNOS board approval or explicit institutional selection criteria before you submit.
This coverage policy applies to orthotopic liver transplantation in four graft types: cadaveric whole or reduced-size organs, living related organs, and split liver grafts. All four types map to CPT 47135 as the primary transplant code, with donor hepatectomy captured separately under 47133 (cadaveric) or 47140, 47141, and 47142 (living donor by segment).
Reimbursement under this policy is contingent on meeting these criteria — not just on the procedure being performed. Document the MELD score and the pathway to approval in your clinical notes. It needs to be in the record, not just in the transplant coordinator's head.
Aetna Liver Transplantation Exclusions and Non-Covered Indications
Aetna explicitly excludes several codes from coverage under CPB 0596. These aren't gray areas.
Basiliximab (J0480) is not covered for indications listed in this policy. Basiliximab is an IL-2 receptor antagonist sometimes used as induction immunosuppression. If your center uses it perioperatively and bills it separately, expect denial under this policy.
Vasopressin formulations — J2596, J2598, J2599, and J2601 — are all listed as not covered. These cover multiple vasopressin products from different manufacturers. None of them are covered under CPB 0596 regardless of which brand or compounding source your center uses.
Enteral formula (B4155) for nutritionally incomplete or modular nutrient supplementation is also not covered under this policy. If your team bills nutritional support for transplant patients under this CPB, stop now.
The real issue here is that these exclusions apply specifically "for indications listed in the CPB." That language matters. It doesn't mean these codes are universally excluded across all Aetna policies — it means Aetna won't cover them when billed in the context of liver transplantation under CPB 0596. If you're bundling these charges into transplant episode billing, pull them. If there's a separate, independent clinical justification under a different policy, talk to your compliance officer before billing.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Biliary atresia | Covered | 47135 | Must meet MELD or institutional criteria |
| Familial cholestatic syndromes | Covered | 47135 | Must meet MELD or institutional criteria |
| Primary biliary cirrhosis | Covered | 47135 | Must meet MELD or institutional criteria |
| Primary sclerosing cholangitis with secondary biliary cirrhosis | Covered | 47135 | Must meet MELD or institutional criteria |
| Alcoholic cirrhosis | Covered | 47135 | Must meet MELD or institutional criteria |
| Chronic active hepatitis B or C with cirrhosis | Covered | 47135 | ICD-10 B18.0, B18.1, B18.2 |
| Cryptogenic cirrhosis | Covered | 47135 | Must meet MELD or institutional criteria |
| Idiopathic autoimmune hepatitis | Covered | 47135 | Must meet MELD or institutional criteria |
| Post-necrotic cirrhosis (Hep B surface antigen negative) | Covered | 47135 | Must meet MELD or institutional criteria |
| Primary hepatocellular carcinoma (HCC) confined to liver | Covered | 47135, C22.0 | All five HCC sub-criteria must be met; UNOS tumor size/number criteria required |
| Hepatoblastoma (children under 12) | Covered | 47135, C22.2 | UNOS criteria required; vein/lymph node spread does not disqualify |
| Epithelioid hemangioendotheliomas | Covered | 47135, D37.6 | Must meet general criteria |
| Intrahepatic cholangiocarcinoma | Covered | 47135, C22.1 | Confined to liver |
| Large unresectable fibrolamellar HCC | Covered | 47135, C22.0 | Must be unresectable |
| Metastatic neuroendocrine tumors (carcinoid, gastrinoma, glucagonoma, apudoma) | Covered | 47135 | Metastases restricted to liver; unresponsive to adjuvant therapy after aggressive surgical resection including excision of the primary lesion and reduction of hepatic metastases |
| Budd-Chiari syndrome | Covered | 47135 | Must meet general criteria |
| Veno-occlusive disease | Covered | 47135 | Must meet general criteria |
| Basiliximab (J0480) | Not Covered | J0480 | Explicitly excluded under CPB 0596 |
| Vasopressin — all formulations (J2596, J2598, J2599, J2601) | Not Covered | J2596, J2598, J2599, J2601 | All manufacturer variants excluded |
| Enteral formula, modular/incomplete (B4155) | Not Covered | B4155 | Not covered under CPB 0596 indications |
Aetna Liver Transplantation Billing Guidelines and Action Items 2026
These are the steps your billing and pre-authorization teams need to take before cases close after March 3, 2026.
| # | Action Item |
|---|---|
| 1 | Audit MELD score documentation in your pre-auth workflows. Every adult and adolescent case needs a documented MELD score in the record. If the score is 10 or below, you need documented UNOS board approval or institutional criteria — not just a clinical note saying transplant is indicated. Build this into your pre-authorization checklist now. |
| 2 | Separate your living donor hepatectomy billing by segment. CPT 47140 covers the left lateral segment only. CPT 47141 covers total left lobectomy (segments II, III, IV). CPT 47142 covers total right lobectomy (segments V, VI, VII, VIII). Bill the correct code for the actual resection — these aren't interchangeable, and incorrect segment reporting will generate a denial. |
| 3 | Bill backbench preparation codes correctly. CPT 47143 covers standard backbench preparation of a cadaveric whole liver graft. Add CPT 47144 for a trisegment split or CPT 47145 for a lobe split. Venous anastomosis reconstruction goes on 47146 and arterial anastomosis on 47147, billed per anastomosis. These codes have distinct descriptions — make sure your operative notes support each one billed. |
| 4 | Check your normothermic perfusion billing before submitting. If your center uses normothermic machine perfusion, CPT codes 0894T (cannulation), 0895T (initial connection), and 0896T (each additional connection) are in scope under this policy. Confirm Aetna reimbursement for these codes on your specific contract before billing — coverage varies by plan. |
| 5 | Remove excluded HCPCS codes from your transplant episode billing. Pull J0480, J2596, J2598, J2599, J2601, and B4155 from any transplant-related claim submissions under CPB 0596. These are explicitly not covered under this policy. If your team bills them as part of an inpatient episode, verify whether they're bundled or if Aetna will deny them as a separate line. Either way, they won't be reimbursed under this CPB. |
| 6 | Confirm HCC case documentation meets all five sub-criteria. Aetna's HCC coverage under this policy requires all of the following: any lung metastases that have been shown to be responsive to chemotherapy, member is not a candidate for subtotal resection, UNOS tumor size/number criteria met, no identifiable extra-hepatic spread, and no macrovascular involvement. Missing one criterion on a C22.0 claim will produce a denial. Build a checklist for your transplant coordinators. |
| 7 | Flag pediatric hepatoblastoma cases with vein or lymph node spread. The policy explicitly states that spread of hepatoblastoma to veins and lymph nodes does not disqualify a child from coverage. This is important — document this language in your appeal template if you receive a denial based on vascular or nodal involvement for a C22.2 claim. |
If your center handles high volumes of liver transplant cases and you're uncertain how this update applies to your specific plan contracts, talk to your compliance officer before the effective date of March 3, 2026. The MELD threshold rules and the malignancy sub-criteria in particular have real denial exposure if your documentation workflows don't match the updated criteria.
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Liver Transplantation Under CPB 0596
Covered CPT Codes (When Selection Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| 47133 | CPT | Donor hepatectomy (including cold preservation), from cadaver donor |
| 47135 | CPT | Liver allotransplantation; orthotopic; partial or whole, from cadaver or living donor, any age |
| 47140 | CPT | Donor hepatectomy (including cold preservation), from living donor; left lateral segment only |
| 47141 | CPT | Donor hepatectomy from living donor; total left lobectomy (segments II, III and IV) |
| 47142 | CPT | Donor hepatectomy from living donor; total right lobectomy (segments V, VI, VII and VIII) |
| 47143 | CPT | Backbench standard preparation of cadaver donor whole liver graft prior to allotransplantation |
| 47144 | CPT | Backbench preparation with trisegment split of whole liver graft into two partial liver grafts |
| 47145 | CPT | Backbench preparation with lobe split of whole liver graft into two partial liver grafts |
| 47146 | CPT | Backbench reconstruction of cadaver or living donor liver graft; venous anastomosis |
| 47147 | CPT | Backbench reconstruction of cadaver or living donor liver graft; arterial anastomosis, each |
Normothermic Perfusion and Elastography Codes (Covered Per Policy Group)
| Code | Type | Description |
|---|---|---|
| 0894T | CPT | Cannulation of the liver allograft in preparation for connection to the normothermic perfusion device |
| 0895T | CPT | Connection of liver allograft to normothermic machine perfusion device, hemostasis control; initial |
| 0896T | CPT | Connection of liver allograft to normothermic machine perfusion device, hemostasis control; each additional |
| 76391 | CPT | Magnetic resonance (eg, vibration) elastography |
| 76981 | CPT | Ultrasound, elastography; parenchyma (eg, organ) |
| 81240 | CPT | F2 (prothrombin, coagulation factor II) gene analysis, 20210G>A variant |
| 81241 | CPT | F5 (coagulation Factor V) gene analysis, Leiden variant |
| 81405 | CPT | Molecular pathology procedure, Level 6 [interleukin 2 (IL-2) receptor] |
| 84145 | CPT | Procalcitonin |
| 91200 | CPT | Liver elastography, mechanically induced shear wave, without imaging, with interpretation |
| 93975 | CPT | Duplex scan of arterial inflow and venous outflow of abdominal, pelvic, scrotal contents and/or retroperitoneal contents |
Not Covered HCPCS Codes
| Code | Type | Description | Reason |
|---|---|---|---|
| B4155 | HCPCS | Enteral formula, nutritionally incomplete/modular nutrients | Not covered for indications listed in CPB 0596 |
| J0480 | HCPCS | Injection, basiliximab, 20 mg | Not covered for indications listed in CPB 0596 |
| J2596 | HCPCS | Injection, vasopressin (long grove), not therapeutically equivalent to J2598, 1 unit | Not covered for indications listed in CPB 0596 |
| J2598 | HCPCS | Injection, vasopressin, 1 unit | Not covered for indications listed in CPB 0596 |
| J2599 | HCPCS | Injection, vasopressin (American regent), not therapeutically equivalent to J2598, 1 unit | Not covered for indications listed in CPB 0596 |
| J2601 | HCPCS | Injection, vasopressin (Baxter), 1 unit | Not covered for indications listed in CPB 0596 |
Key ICD-10-CM Diagnosis Codes
| Code | Description |
|---|---|
| A41.9 | Sepsis, unspecified organism |
| B16.0 | Acute hepatitis B with hepatic coma |
| B16.1 | Acute hepatitis B without mention of hepatic coma |
| B16.2 | Acute hepatitis B with hepatic coma |
| B16.9 | Acute hepatitis B without mention of hepatic coma |
| B17.10 | Acute hepatitis C without hepatic coma |
| B17.11 | Acute hepatitis C with hepatic coma |
| B18.0 | Acute hepatitis B with hepatic coma |
| B18.1 | Acute hepatitis B with hepatic coma |
| B18.2 | Chronic viral hepatitis C |
| B19.10 | Acute hepatitis B without mention of hepatic coma |
| B19.11 | Acute hepatitis B with hepatic coma |
| B19.20 | Unspecified viral hepatitis C |
| B19.21 | Unspecified viral hepatitis C |
| C22.0 | Liver cell carcinoma (hepatocellular carcinoma) |
| C22.1 | Intrahepatic bile duct carcinoma (cholangiocarcinoma) |
| C22.2 | Hepatoblastoma |
| C24.0 | Malignant neoplasm of extrahepatic bile duct |
| D37.6 | Neoplasm of uncertain behavior of liver, gallbladder and bile ducts (epithelioid hemangioendothelioma) |
| E70.0–E72.9 | Disorders of aromatic amino-acid metabolism, branched-chain amino-acid metabolism, and fatty acid metabolism |
| E80.0 | Hereditary erythropoietic porphyria (erythropoietic protoporphyria) |
| E83.01 | Wilson's disease |
| E83.10 | Other and unspecified disorders of iron metabolism |
| E83.110 | Hereditary hemochromatosis |
The full policy references 184 ICD-10-CM codes. The table above includes all codes provided in the policy data excerpt. Access the complete code set at the Aetna CPB 0596 policy page.
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