Cigna modified MM 0540, its ablative treatment for malignant breast tumor coverage policy, effective October 16, 2025 — and the news for billing teams is blunt: all three codes under this policy are now designated Not Medically Necessary.
Cigna Healthcare (the payer's full official name) has updated Policy MM 0540 to reflect its current coverage position on percutaneous ablative treatments for malignant breast tumors. This includes cryoablation (CPT 0581T), percutaneous laser ablation (CPT 0971T), and unlisted breast procedures (CPT 19499) used to report microwave thermotherapy or radiofrequency ablation. If your team has been billing any of these procedures for Cigna members, you need to stop and reassess before October 16, 2025.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Cigna Healthcare |
| Policy | Ablative Treatment for Malignant Breast Tumor |
| Policy Code | MM 0540 |
| Change Type | Modified |
| Effective Date | October 16, 2025 |
| Impact Level | High |
| Specialties Affected | Surgical oncology, breast surgery, interventional radiology, general surgery |
| Key Action | Remove CPT 0581T, 0971T, and 19499 (when used for breast ablation) from your Cigna charge capture and flag any pending claims for review before October 16, 2025 |
Cigna Ablative Breast Tumor Coverage Criteria and Medical Necessity Requirements 2025
The Cigna MM 0540 coverage policy governs four ablative techniques for malignant breast tumors: cryoablation, percutaneous laser ablation, microwave thermotherapy, and radiofrequency ablation. Under the modified policy, none of these treatments meet Cigna's standard of medical necessity.
That's not a soft exclusion or a prior authorization hurdle. Cigna's position is that these procedures are Not Medically Necessary — full stop. This means claims submitted for Cigna members will be denied regardless of clinical documentation or supporting rationale, because the payer has determined the evidence base doesn't support routine coverage for these modalities.
The real issue here is reimbursement exposure. If your practice has been performing any of these ablative breast tumor treatments on Cigna-insured patients — and billing under 0581T, 0971T, or 19499 — you may already have outstanding claims that will not pay under the updated policy. Review your open claims now, before the October 16, 2025 effective date changes the landscape.
This coverage policy also raises a prior authorization question worth addressing: even if a prior auth was obtained before October 16, 2025, a modification to the underlying coverage position can override existing authorizations. Check with your Cigna provider relations contact on whether pre-October 16 authorizations will be honored after the effective date.
Cigna Ablative Breast Tumor Exclusions and Non-Covered Indications
Every procedure under MM 0540 carries a Not Medically Necessary designation. This isn't a case where some indications are covered and others aren't — Cigna has drawn a firm line across all four ablative modalities.
Cryoablation (CPT 0581T) is not covered. This includes percutaneous cryotherapy performed with imaging guidance for malignant breast tumors. The imaging guidance component doesn't change the coverage status.
Percutaneous laser ablation (CPT 0971T) is not covered. Like cryoablation, the inclusion of imaging guidance in the procedure description doesn't create a covered path.
Microwave thermotherapy and radiofrequency ablation are not covered when billed under CPT 19499 (unlisted breast procedure). This is the catch-all code your team might use for ablative approaches that don't have a dedicated CPT code — and Cigna's policy explicitly puts those in the Not Medically Necessary bucket as well.
There are no exceptions listed in the policy for tumor size, patient age, stage of disease, or comorbidities that would make surgery inadvisable. If you're treating patients who may not be surgical candidates and you're considering ablation as an alternative, the medical necessity argument will not fly with Cigna under this policy.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Cryoablation of malignant breast tumor, percutaneous | Not Medically Necessary | CPT 0581T | Includes imaging guidance; claim denial expected regardless of documentation |
| Percutaneous laser ablation of malignant breast tumor | Not Medically Necessary | CPT 0971T | Includes imaging guidance; no covered indications listed |
| Microwave thermotherapy for malignant breast tumor | Not Medically Necessary | CPT 19499 | Billed as unlisted procedure; Cigna policy excludes this use |
| Radiofrequency ablation of malignant breast tumor | Not Medically Necessary | CPT 19499 | Billed as unlisted procedure; Cigna policy excludes this use |
Cigna Ablative Breast Tumor Billing Guidelines and Action Items 2025
The billing guidelines here are straightforward, but the stakes are high. Here's what your team needs to do now.
| # | Action Item |
|---|---|
| 1 | Audit your Cigna charge capture before October 16, 2025. Pull every encounter coded with 0581T, 0971T, or 19499 (specifically where 19499 has been used for breast ablation procedures) for Cigna-insured patients. Flag anything billed in the last 12 months. |
| 2 | Review open and unpaid claims now. Claims submitted before October 16, 2025 may still be processed under the prior version of the policy — but don't assume that. Check the denial reason codes on any returned claims. If you're seeing Not Medically Necessary denials on breast ablation codes today, the modified policy is already aligning with Cigna's coverage position. |
| 3 | Stop scheduling ablative breast tumor procedures for Cigna members without a financial clearance conversation. If a surgeon or interventional radiologist is planning one of these procedures on a Cigna patient, the billing team needs to be in that loop before the appointment. The patient should understand their financial exposure before the procedure, not after. |
| 4 | Update your advance beneficiary notice (ABN) equivalent process for commercial payers. Cigna isn't Medicare, so it's not a true ABN — but your practice should have a patient financial responsibility form that covers non-covered services. Use it here. Document that the patient was informed the procedure is not covered by Cigna under MM 0540. |
| 5 | Don't use 19499 as a workaround. Some billing teams reach for unlisted codes when a procedure doesn't have a clean CPT match, hoping the narrative will carry the claim. Cigna has explicitly addressed this. The policy covers microwave thermotherapy and radiofrequency ablation under the MM 0540 umbrella, and 19499 used for those purposes is Not Medically Necessary. A well-written operative note won't change that. |
| 6 | Talk to your compliance officer if you have a high volume of these procedures. If your practice has billed substantial amounts under 0581T, 0971T, or 19499 for breast ablation — and those claims were paid — you may have a recoupment exposure. Cigna can and does retroactively audit when policy changes formalize positions that reflect their existing medical necessity reviews. Loop in your compliance officer before October 16, 2025, not after. |
| 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 Ablative Breast Tumor Treatment Under MM 0540
Not Covered / Not Medically Necessary Codes
All three codes under MM 0540 carry a Not Medically Necessary designation. There are no covered CPT codes under this policy. The table below reflects the complete code set from the policy.
| Code | Type | Description | Coverage Status |
|---|---|---|---|
| 0581T | CPT | Ablation, malignant breast tumor(s), percutaneous, cryotherapy, including imaging guidance when performed | Not Medically Necessary |
| 0971T | CPT | Ablation, malignant breast tumor(s), percutaneous, laser, including imaging guidance when performed | Not Medically Necessary |
| 19499 | CPT | Unlisted procedure, breast | Not Medically Necessary (when used for ablative breast tumor treatment) |
No ICD-10-CM codes are specified in the MM 0540 Cigna policy data. The Not Medically Necessary determination applies to the procedure itself — diagnosis codes do not create a covered pathway.
A note on 0971T: this is a relatively new Category III code for percutaneous laser ablation of malignant breast tumors. Cigna Healthcare has moved quickly to classify it as Not Medically Necessary alongside the older cryoablation code. If your team was watching 0971T as an emerging technology code and hoping Cigna would carve out coverage, this policy update answers that question.
On 0581T: cryoablation of breast tumors has been an active area of clinical research, and some payers have begun covering it under specific criteria (typically small, low-risk tumors in patients who decline surgery). Cigna is not one of them — at least not as of October 16, 2025. Watch for future updates, but don't bill on the assumption that clinical research activity equals payer coverage.
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