TL;DR: Cigna Healthcare modified MM 0431 covering cardioverter-defibrillator devices, effective September 26, 2025. Billing teams need to review medical necessity criteria for implantable, subcutaneous, substernal, and wearable defibrillator devices before submitting claims against the 19 CPT and 10 HCPCS codes in scope.
Cigna Healthcare updated its cardioverter-defibrillator devices coverage policy under policy code MM 0431, with a September 26, 2025 effective date. This policy covers transvenous implantable cardioverter defibrillators (ICDs), subcutaneous ICDs (S-ICDs), substernal ICDs, wearable cardioverter-defibrillators (WCDs), and automatic external defibrillators (AEDs) in the home setting. The affected codes span CPT 33202 through 33273, plus HCPCS codes C1721, C1722, C1777, C1882, C1883, E0617, G0448, K0606, K0607, and K0608. If your practice or facility bills any of these, the September 26 effective date is your deadline to align.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Cigna Healthcare |
| Policy | Cardioverter-Defibrillator Devices |
| Policy Code | MM 0431 |
| Change Type | Modified |
| Effective Date | 2025-09-26 |
| Impact Level | High |
| Specialties Affected | Electrophysiology, Cardiac Surgery, Cardiology, Cardiac Electrophysiology, DME Suppliers |
| Key Action | Audit active ICD, S-ICD, WCD, and AED claims for medical necessity documentation before September 26, 2025 |
Cigna Cardioverter-Defibrillator Coverage Criteria and Medical Necessity Requirements 2025
The Cigna cardioverter-defibrillator coverage policy under MM 0431 covers five distinct device categories. Each has its own medical necessity criteria. Get these distinctions right before you bill — conflating device types is a fast path to a claim denial.
Transvenous ICDs use leads threaded through veins to the heart. Procedure codes 33216 and 33217 cover single and dual transvenous electrode insertion. Pulse generator procedures — insertion only (CPT 33240, 33230, 33231), removal only (CPT 33241), and replacement (CPT 33262, 33263, 33264) — each require documentation that the patient meets the applicable medical necessity criteria in the policy.
Subcutaneous ICDs (S-ICDs) avoid transvenous leads entirely. CPT 33270 covers insertion or replacement of the full S-ICD system. CPT 33271 covers electrode insertion, CPT 33272 covers electrode removal or repositioning, and CPT 33273 covers unlisted cardiac surgery procedures in this context. These are considered medically necessary when the Cigna criteria are met — but those criteria matter. Billers often miss the distinction between S-ICD and transvenous ICD medical necessity standards, which are not interchangeable.
Substernal ICDs are the one area where Cigna draws a hard line. CPT 0614T — which covers substernal electrode placement including imaging guidance and electrophysiological evaluation — is designated Experimental/Investigational/Unproven. Do not bill this expecting reimbursement. This is similar to how Cigna has handled other novel implant approaches that haven't cleared its evidence threshold.
Wearable cardioverter-defibrillators are billed through HCPCS K0606 (the garment-type AED with integrated ECG analysis), K0607 (replacement battery), and K0608 (replacement garment). These are durable medical equipment codes — your DME suppliers need to confirm medical necessity documentation is in place before the September 26, 2025 effective date.
Home AEDs bill under HCPCS E0617 (external defibrillator with integrated ECG analysis). Coverage requires meeting the applicable criteria. Prior authorization requirements under this coverage policy should be verified through Cigna's online portal or provider line before scheduling implantation or dispensing equipment.
The billing guidelines for MM 0431 Cigna system also apply to epicardial electrode procedures. CPT 33202 (open incision) and 33203 (endoscopic approach) are covered when criteria are met. These are less common but appear in complex cases — make sure your charge capture is set up to handle them.
Cigna Cardioverter-Defibrillator Exclusions and Non-Covered Indications
One device type is off the table entirely under the current Cigna cardioverter-defibrillator coverage policy: the substernal ICD.
CPT 0614T — substernal electrode insertion with imaging guidance and electrophysiological evaluation — carries an Experimental/Investigational/Unproven designation. Cigna does not cover this procedure. Claims billed under 0614T will be denied. This is not a prior authorization issue — no level of documentation will change the coverage status while this designation stands.
The substernal ICD is a newer approach designed to avoid both transvenous leads and subcutaneous placement. The clinical concept is sound, but Cigna hasn't accepted the evidence base yet. If your electrophysiologists are implanting substernal ICDs, bill cautiously. Talk to your compliance officer before submitting these claims, especially if your facility has been using 0614T under the assumption it might be covered.
Coverage Indications at a Glance
| Device Type | Coverage Status | Key Codes | Notes |
|---|---|---|---|
| Transvenous ICD — electrode insertion | Covered | CPT 33216, 33217 | Medical necessity criteria must be met |
| Transvenous ICD — pulse generator (insertion) | Covered | CPT 33240, 33230, 33231 | Existing leads required for 33230/33231 |
| Transvenous ICD — pulse generator (removal) | Covered | CPT 33241 | Medical necessity criteria apply |
| Transvenous ICD — pulse generator (replacement) | Covered | CPT 33262, 33263, 33264 | Criteria must be documented |
| Transvenous ICD — electrode removal | Covered | CPT 33243, 33244 | Thoracotomy vs. transvenous extraction |
| Subcutaneous ICD (S-ICD) | Covered | CPT 33270, 33271, 33272, 33273 | Criteria distinct from transvenous ICD |
| Left ventricular pacing electrode | Covered | CPT 33224 | Attachment to existing device required |
| Epicardial electrode insertion (open) | Covered | CPT 33202 | Open incision approach |
| Epicardial electrode insertion (endoscopic) | Covered | CPT 33203 | Thoracoscopy or pericardioscopy |
| Substernal ICD | Experimental/Investigational | CPT 0614T | Not covered — claims will be denied |
| Home AED | Covered | HCPCS E0617 | External with integrated ECG analysis |
| Wearable cardioverter-defibrillator (garment) | Covered | HCPCS K0606 | DME; medical necessity required |
| WCD replacement battery | Covered | HCPCS K0607 | Garment type only, each |
| WCD replacement garment | Covered | HCPCS K0608 | Each garment replacement |
| ICD device — dual chamber (implantable) | Covered | HCPCS C1721 | Device code; accompanies procedure CPTs |
| ICD device — single chamber (implantable) | Covered | HCPCS C1722 | Device code; accompanies procedure CPTs |
| ICD lead — endocardial single coil | Covered | HCPCS C1777 | Lead code |
| ICD device — other than single/dual chamber | Covered | HCPCS C1882 | Covers S-ICD and other configurations |
| Lead adaptor/extension (implantable) | Covered | HCPCS C1883 | Pacing lead or neurostimulator lead |
| Permanent pacing cardioverter-defibrillator system | Covered | HCPCS G0448 | Transvenous lead system |
Cigna Cardioverter-Defibrillator Billing Guidelines and Action Items 2025
Here's what your billing team needs to do before and after the September 26, 2025 effective date.
| # | Action Item |
|---|---|
| 1 | Audit your charge capture for CPT 0614T immediately. If your facility bills substernal ICD procedures, stop. This code is Experimental/Investigational/Unproven under MM 0431. Any claims submitted on or after September 26, 2025 will be denied. Pull your last 90 days of claims and check whether 0614T appears. |
| 2 | Verify prior authorization requirements for all ICD implant procedures. Cigna's prior authorization requirements vary by device type and plan. Confirm PA status through Cigna's portal before scheduling. Missing a PA on a $40,000+ device implant is an expensive mistake. |
| 3 | Separate device codes from procedure codes in your charge capture. The HCPCS device codes — C1721, C1722, C1777, C1882, C1883 — are billed alongside the procedure CPTs, not instead of them. This is a common source of underbilling and claim denial. Make sure your charge capture captures both the implant procedure and the device separately. |
| 4 | Train your DME team on WCD billing codes K0606, K0607, and K0608. These wearable cardioverter-defibrillator codes require medical necessity documentation tied to the patient's cardiac history. K0607 and K0608 are replacement codes — bill them per item, per garment or battery. Bundling errors here are common and easy to catch in a claim review. |
| 5 | Review documentation standards for S-ICD cases. CPT 33270, 33271, 33272, and 33273 cover subcutaneous ICD procedures. The medical necessity criteria for S-ICD are not the same as transvenous ICD criteria. Your physicians' notes need to reflect why the subcutaneous approach was chosen — especially if prior transvenous ICD was considered and rejected. |
| 6 | Confirm HCPCS G0448 is being used correctly for pacing cardioverter-defibrillator systems. G0448 covers insertion or replacement of a permanent pacing cardioverter-defibrillator system with transvenous leads. This is distinct from standard ICD insertion codes. If you're seeing this code on claims, verify the device type and approach match. |
| 7 | Talk to your compliance officer if you have active substernal ICD cases. The Experimental/Investigational designation on 0614T creates financial exposure. Patients may have financial liability questions. Your compliance officer needs to know this is happening before claims go out after September 26, 2025. |
| 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 Cardioverter-Defibrillator Devices Under MM 0431
Covered CPT Codes (When Medical Necessity Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| 33202 | CPT | Insertion of epicardial electrode(s); open incision (e.g., thoracotomy, median sternotomy, subxiphoid approach) |
| 33203 | CPT | Insertion of epicardial electrode(s); endoscopic approach (e.g., thoracoscopy, pericardioscopy) |
| 33216 | CPT | Insertion of a single transvenous electrode, permanent pacemaker or implantable defibrillator |
| 33217 | CPT | Insertion of 2 transvenous electrodes, permanent pacemaker or implantable defibrillator |
| 33224 | CPT | Insertion of pacing electrode, cardiac venous system, for left ventricular pacing, with attachment to previously placed pacemaker or implantable defibrillator |
| 33230 | CPT | Insertion of implantable defibrillator pulse generator only; with existing dual leads |
| 33231 | CPT | Insertion of implantable defibrillator pulse generator only; with existing multiple leads |
| 33240 | CPT | Insertion of implantable defibrillator pulse generator only; with existing single lead |
| 33241 | CPT | Removal of implantable defibrillator pulse generator only |
| 33243 | CPT | Removal of single or dual chamber implantable defibrillator electrode(s); by thoracotomy |
| 33244 | CPT | Removal of single or dual chamber implantable defibrillator electrode(s); by transvenous extraction |
| 33262 | CPT | Removal of implantable defibrillator pulse generator with replacement; single chamber |
| 33263 | CPT | Removal of implantable defibrillator pulse generator with replacement; dual chamber |
| 33264 | CPT | Removal of implantable defibrillator pulse generator with replacement; multiple leads |
| 33270 | CPT | Insertion or replacement of permanent subcutaneous implantable defibrillator system, with subcutaneous electrode |
| 33271 | CPT | Insertion of subcutaneous implantable defibrillator electrode |
| 33272 | CPT | Removal of subcutaneous implantable defibrillator electrode |
| 33273 | CPT | Repositioning of previously implanted subcutaneous implantable defibrillator electrode; unlisted procedure, cardiac surgery |
Covered HCPCS Codes (When Medical Necessity Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| C1721 | HCPCS | Cardioverter-defibrillator, dual chamber (implantable) |
| C1722 | HCPCS | Cardioverter-defibrillator, single chamber (implantable) |
| C1777 | HCPCS | Lead, cardioverter-defibrillator, endocardial single coil (implantable) |
| C1882 | HCPCS | Cardioverter-defibrillator, other than single or dual chamber (implantable) |
| C1883 | HCPCS | Adaptor/extension, pacing lead or neurostimulator lead (implantable) |
| E0617 | HCPCS | External defibrillator with integrated electrocardiogram analysis |
| G0448 | HCPCS | Insertion or replacement of a permanent pacing cardioverter-defibrillator system with transvenous leads |
| K0606 | HCPCS | Automatic external defibrillator, with integrated electrocardiogram analysis, garment type |
| K0607 | HCPCS | Replacement battery for automated external defibrillator, garment type only, each |
| K0608 | HCPCS | Replacement garment for use with automated external defibrillator, each |
Experimental / Not Covered Codes
| Code | Type | Description | Reason |
|---|---|---|---|
| 0614T | CPT | Substernal electrode(s), including all imaging guidance and electrophysiological evaluation | Considered Experimental/Investigational/Unproven by Cigna |
No ICD-10-CM codes are listed in the MM 0431 policy data. Diagnosis code requirements should be confirmed through Cigna's coverage policy documentation or provider portal.
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