TL;DR: Aetna, a CVS Health company, modified CPB 0586 covering heart transplantation, effective September 26, 2025. Billing teams should audit charge capture for CPT 33945, 33935, 33927–33929, and 81595, plus the AI-related codes 0055U, 0087U, 0493U, and 0540U before claims go out under this updated coverage policy.
Aetna's heart transplantation coverage policy — CPB 0586 Aetna system — now formally addresses machine learning and artificial intelligence applications in cardiac monitoring post-transplant, pulling codes like 0055U (cell-free DNA, 96-target PCR assay), 0087U (1,283-gene mRNA microarray), 0493U, and 0540U into their own coded group. That's the material change here. If your transplant center or cardiovascular billing team has been submitting these molecular and genomic rejection-monitoring codes without tracking Aetna's specific criteria, you have exposure starting September 26, 2025.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Aetna, a CVS Health company |
| Policy | Heart Transplantation |
| Policy Code | CPB 0586 |
| Change Type | Modified |
| Effective Date | September 26, 2025 |
| Impact Level | High |
| Specialties Affected | Cardiac surgery, cardiology, transplant medicine, revenue cycle teams at transplant centers |
| Key Action | Audit charge capture for CPT 33945, 81595, and AI-group codes 0055U, 0087U, 0493U, 0540U before submitting claims under the updated policy |
Aetna Heart Transplantation Coverage Criteria and Medical Necessity Requirements 2025
The Aetna heart transplantation coverage policy under CPB 0586 covers heart transplantation (CPT 33945) and heart-lung transplantation (CPT 33935) when selection criteria are met. Medical necessity is the threshold — Aetna won't pay on diagnosis codes alone. You need documentation that supports the patient's diagnosis from the covered ICD-10 list and shows the condition meets criteria for surgical intervention at the transplant level.
The covered ICD-10 range is extensive. It spans end-stage heart failure (I50.1–I50.9), cardiomyopathies (I42.0–I42.9, I43), ischemic heart disease (I21.01–I25.9), valvular disorders (I34.0–I39), severe pulmonary heart diseases (I27.0–I27.9), cardiac dysrhythmias (I47.0–I49.9), amyloidosis (E85.0–E85.9), and myocarditis (I51.4). Infectious and parasitic disease codes (A00.0–B99.9) are also listed — relevant for cases like viral cardiomyopathy leading to transplant candidacy.
The total artificial heart codes — CPT 33927 (implantation), 33928 (removal and replacement), and 33929 (removal for transplantation) — are covered when criteria are met, along with HCPCS L8698 for artificial heart system components. These are bridge-to-transplant scenarios. Medical necessity documentation must reflect the continuum from device implant through transplantation.
Prior authorization is the norm for transplant-level procedures with Aetna. If your team is billing CPT 33945 or 33935 without prior authorization confirmed upfront, you're setting up a claim denial. The same applies to the total artificial heart codes. Verify auth status before the procedure, not after.
CPT 81595 (20-gene mRNA expression profiling for rejection monitoring, AlloMap) is covered when selection criteria are met. This is a real reimbursement opportunity for post-transplant monitoring — but Aetna requires criteria to be satisfied. Document clearly why this test is medically necessary at each utilization.
Aetna Heart Transplantation Exclusions and Non-Covered Indications
This is where the 2025 update gets granular. Aetna added a distinct code group labeled "Use of machine learning and artificial intelligence in cardiology" — and the label itself signals their position: these are not yet in the main covered group.
Codes 0055U, 0087U, 0493U, 0540U, 71275 (CT angiography, chest, with contrast), and 84484 (cardiac troponin, quantitative) all land in this AI/machine learning group. That grouping is policy language telling you Aetna is watching these codes closely. It does not automatically mean denied — but it means medical necessity documentation carries more weight, coverage determinations may vary by plan, and you should expect scrutiny.
The 0493U and 0540U codes both cover donor-derived cell-free DNA quantification using next-generation sequencing. The 0055U is a 96-target cfDNA PCR assay. The 0087U is a 1,283-gene mRNA microarray. These are legitimate rejection-monitoring tools — but Aetna has grouped them separately from the clearly covered 81595. If you're billing these to Aetna, loop in your compliance officer now to confirm plan-level coverage and get documentation protocols set before September 26, 2025.
The ventricular assist device codes (CPT 33975–33979, 33990–33993) sit in the "other codes related to the CPB" group — not the explicitly covered group. They're listed because they're procedurally related, but their coverage status depends on the clinical context and the specific plan. Don't assume they're covered just because they're in the policy.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Heart transplantation | Covered — selection criteria required | CPT 33945 | Prior authorization required |
| Heart-lung transplantation | Covered — selection criteria required | CPT 33935 | Prior authorization required |
| Total artificial heart implantation (bridge to transplant) | Covered — selection criteria required | CPT 33927, 33928, 33929, HCPCS L8698 | Document bridge-to-transplant necessity |
| Donor cardiectomy with cold preservation | Covered — selection criteria required | CPT 33940 | Transplant center billing |
| Gene expression profiling, 20-gene mRNA (AlloMap) | Covered — selection criteria required | CPT 81595 | Document medical necessity per use |
| Cell-free DNA and mRNA-based rejection monitoring (AI-grouped) | Coverage dependent — in AI/ML group | CPT 0055U, 0087U, 0493U, 0540U | Verify plan-level coverage; heightened documentation standards |
| CT angiography, chest (AI-grouped) | Coverage dependent — in AI/ML group | CPT 71275 | Same AI/ML group — verify before billing |
| Cardiac troponin (AI-grouped) | Coverage dependent — in AI/ML group | CPT 84484 | Listed in AI/ML group; confirm plan coverage |
| Ventricular assist devices (extracorporeal, intracorporeal, percutaneous) | Related — not in primary covered group | CPT 33975–33979, 33990–33993 | Coverage depends on clinical context and plan |
| Cardiovascular stress testing | Related — not in primary covered group | CPT 93015–93018 | Supporting diagnostic use |
| Cardiac catheterization | Related — not in primary covered group | CPT 93451–93454 | Supporting diagnostic use |
| Cardiac rehabilitation | Related — not in primary covered group | CPT 93798, HCPCS G0422, S9472 | Post-transplant rehab — verify separately |
Aetna Heart Transplantation Billing Guidelines and Action Items 2025
| # | Action Item |
|---|---|
| 1 | Audit your charge capture for CPT 0055U, 0087U, 0493U, and 0540U before September 26, 2025. Aetna's decision to group these under "AI/machine learning in cardiology" rather than the covered group is a flag. Pull any outstanding claims or future scheduled procedures using these codes and confirm plan-level coverage before they go out. |
| 2 | Confirm prior authorization for CPT 33945 and 33935 on every case. Heart transplantation billing without prior auth in place is a predictable claim denial. This isn't new, but the policy update is a good forcing function to audit your auth workflows. |
| 3 | Build documentation templates that address medical necessity for CPT 81595 separately from the 0055U/0087U group. AlloMap (81595) is in the covered group. The cfDNA and mRNA microarray codes are not. Your clinicians need to know which test maps to which code, and your billing team needs to see the medical necessity documentation tied to the right code at submission. |
| 4 | Verify plan-level coverage for CPT 71275 and 84484 before billing under CPB 0586. These codes are in the AI/ML group. CT angiography of the chest and troponin quantification are high-volume codes that appear in many billing workflows — make sure your team knows these are flagged differently under this policy. |
| 5 | Review ICD-10 mapping for the full covered diagnosis range. The covered diagnosis list in CPB 0586 is broad — 160 ICD-10 codes — but specific. Amyloidosis (E85.x), neuromuscular junction disease (G70.00–G73.7), and sequelae of cerebrovascular disease (I69.00–I69.998) are all listed. Confirm your CDI and coding team has updated crosswalk documentation to these ranges. |
| 6 | Document bridge-to-transplant intent clearly when billing CPT 33927–33929 and HCPCS L8698. The total artificial heart codes are covered, but the clinical record needs to show why the device was placed and the trajectory toward transplantation. Thin documentation here is a reimbursement risk. |
| 7 | If your transplant center bills ventricular assist device codes (33975–33979, 33990–33993), don't assume automatic coverage under this CPB. These codes are listed as related but are not in the covered group. Each requires its own coverage determination based on diagnosis and plan. |
| 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 Heart Transplantation Under CPB 0586
Covered CPT Codes (When Selection Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| 33927 | CPT | Implantation of a total replacement heart system (artificial heart) with recipient cardiectomy |
| 33928 | CPT | Removal and replacement of total replacement heart system (artificial heart) |
| 33929 | CPT | Removal of a total replacement heart system (artificial heart) for heart transplantation |
| 33935 | CPT | Heart-lung transplant with recipient cardiectomy-pneumonectomy |
| 33940 | CPT | Donor cardiectomy, including cold preservation |
| 33945 | CPT | Heart transplant, with or without recipient cardiectomy |
| 81595 | CPT | Cardiology (heart transplant), mRNA gene expression profiling by real-time quantitative PCR of 20 genes |
Covered HCPCS Codes (When Selection Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| L8698 | HCPCS | Miscellaneous component, supply, or accessory for use with total artificial heart system |
AI/Machine Learning Group — Verify Plan Coverage
| Code | Type | Description |
|---|---|---|
| 0055U | CPT | Cardiology (heart transplant), cell-free DNA, PCR assay of 96 DNA target sequences |
| 0087U | CPT | Cardiology (heart transplant), mRNA gene expression profiling by microarray of 1,283 genes |
| 0493U | CPT | Transplantation medicine, quantification of donor-derived cell-free DNA using next-generation sequencing |
| 0540U | CPT | Transplantation medicine, quantification of donor-derived cell-free DNA using next-generation sequencing |
| 71275 | CPT | Computed tomographic angiography, chest (noncoronary), with contrast material(s) |
| 84484 | CPT | Troponin, quantitative (cardiac troponins) |
Other CPT Codes Related to CPB 0586
| Code | Type | Description |
|---|---|---|
| 33975 | CPT | Insertion of ventricular assist device; extracorporeal, single ventricle |
| 33976 | CPT | Insertion of ventricular assist device; extracorporeal, biventricular |
| 33977 | CPT | Removal of ventricular assist device; extracorporeal, single ventricle |
| 33978 | CPT | Removal of ventricular assist device; extracorporeal, biventricular |
| 33979 | CPT | Insertion of ventricular assist device, implantable intracorporeal, single ventricle |
| 33990 | CPT | Insertion of ventricular assist device, percutaneous, including radiological supervision and interpretation |
| 33991 | CPT | Insertion of ventricular assist device, both arterial and venous access, with transseptal puncture |
| 33992 | CPT | Removal of percutaneous ventricular assist device at separate and distinct session from insertion |
| 33993 | CPT | Repositioning of percutaneous ventricular assist device with imaging guidance |
| 93015 | CPT | Cardiovascular stress test, treadmill or bicycle exercise, continuous ECG monitoring |
| 93016 | CPT | Cardiovascular stress test, treadmill or bicycle exercise, continuous ECG monitoring |
| 93017 | CPT | Cardiovascular stress test, treadmill or bicycle exercise, continuous ECG monitoring |
| 93018 | CPT | Cardiovascular stress test, treadmill or bicycle exercise, continuous ECG monitoring |
| 93451 | CPT | Cardiac catheterization |
| 93452 | CPT | Cardiac catheterization |
| 93453 | CPT | Cardiac catheterization |
| 93454 | CPT | Cardiac catheterization |
| 93798 | CPT | Physician services for outpatient cardiac rehabilitation; with continuous ECG monitoring, per session |
Other HCPCS Codes Related to CPB 0586
| Code | Type | Description |
|---|---|---|
| G0422 | HCPCS | Intensive cardiac rehabilitation; with or without continuous ECG monitoring with exercise, per session |
| S9472 | HCPCS | Cardiac rehabilitation program, non-physician provider, per diem |
Key ICD-10-CM Diagnosis Codes
| Code | Description |
|---|---|
| A00.0–B99.9 | Infectious and parasitic diseases |
| E85.0–E85.9 | Amyloidosis |
| G70.00–G73.7 | Diseases of myoneural junction and muscle |
| I21.01–I24.9 | Acute myocardial infarction and other acute ischemic heart disease |
| I25.10–I25.799 | Chronic ischemic heart disease |
| I25.810–I25.9 | Other and unspecified forms of chronic ischemic heart disease |
| I27.0–I27.9 | Severe pulmonary heart diseases |
| I34.0–I39 | Nonrheumatic mitral, aortic, tricuspid, and pulmonary valve disorders |
| I42.0–I42.9 | Cardiomyopathies (including obstructive hypertrophic, dilated, and other forms) |
| I43 | Cardiomyopathy in diseases classified elsewhere |
| I47.0–I49.9 | Cardiac dysrhythmias |
| I50.1–I50.9 | Heart failure |
| I51.4 | Myocarditis, unspecified |
| I69.00–I69.998 | Sequelae of cerebrovascular disease (significant persistent deficit) |
| J44.9 | Chronic obstructive pulmonary disease, unspecified (dual organ transplant context) |
Note: CPB 0586 references 160 ICD-10-CM codes in total. Confirm the full list in the Aetna policy document before finalizing your ICD-10 crosswalk.
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