TL;DR: Cigna Healthcare modified MM 0013, its endometrial ablation coverage policy, effective February 14, 2026. Here's what billing teams need to do before claims go out the door.
Cigna Healthcare updated Coverage Policy MM 0013 governing endometrial ablation for excessive uterine bleeding. The revision affects five CPT codes—58353, 58356, 58563, 58579, and 58999—and draws a hard line between procedures Cigna considers medically necessary and those it considers experimental or investigational. If your practice bills for hysteroscopic or non-hysteroscopic ablation, this policy change deserves your attention now, not at the point of a claim denial.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Cigna Healthcare |
| Policy | Endometrial Ablation – Coverage Position Criteria |
| Policy Code | MM 0013 |
| Change Type | Modified |
| Effective Date | February 14, 2026 |
| Impact Level | Medium-High |
| Specialties Affected | OB/GYN, minimally invasive gynecologic surgery, women's health billing |
| Key Action | Audit charge capture for CPT 58579 and 58999 — both are now explicitly designated experimental/investigational under this policy |
Cigna Endometrial Ablation Coverage Criteria and Medical Necessity Requirements 2026
The Cigna endometrial ablation coverage policy under MM 0013 covers three CPT codes when medical necessity criteria are met: CPT 58353 (thermal endometrial ablation without hysteroscopic guidance), CPT 58356 (endometrial cryoablation with ultrasonic guidance, including endometrial curettage when performed), and CPT 58563 (hysteroscopy, surgical, with endometrial ablation).
To support a medical necessity determination, your documentation needs to reflect that the procedure is indicated for excessive uterine bleeding. The relevant ICD-10-CM codes for this purpose include N92.5 (other specified irregular menstruation), N94.6 (dysmenorrhea, unspecified), D25.0–D25.9 (leiomyoma of the uterus), N84.0–N84.1 (polyp of corpus or cervix uteri), N85.6 (intrauterine synechiae), and N85.8 (other specified noninflammatory disorders of uterus).
Diagnosis coding precision matters here. Submitting a claim for CPT 58353 or 58563 with a weak or unsupported diagnosis code is a fast path to a medical necessity denial. Your documentation should tie the procedure directly to one of the covered diagnoses above.
Prior authorization requirements can vary by Cigna plan. Before submitting claims under MM 0013, confirm whether the specific plan requires prior auth for CPT 58353, 58356, or 58563. Commercial, self-funded, and exchange plans may each have different prior authorization rules even when the coverage policy is the same. Check the patient's plan benefits before scheduling, not after.
Cigna Endometrial Ablation Exclusions and Non-Covered Indications
This is where the policy gets expensive if your team isn't paying attention.
Cigna has designated CPT 58579 (unlisted hysteroscopy procedure, uterus) and CPT 58999 (unlisted procedure, female genital system, nonobstetrical) as experimental, investigational, and unproven under MM 0013. That's a flat denial waiting to happen if either code appears on a claim without a strong documented rationale—and even then, the policy's language is not favorable.
The real issue with 58579 and 58999 is how often they appear as fallback codes when a biller can't find an exact match for a newer ablation technique. If your practice uses a device or method that doesn't map cleanly to 58353, 58356, or 58563, your instinct might be to reach for an unlisted code. Under MM 0013, that instinct will cost you.
If you're using a newer ablation technology and the only code fit is an unlisted procedure code, get your compliance officer and your billing consultant involved before the February 14, 2026 effective date. The experimental designation under this coverage policy means pended or denied claims, and appeals will be an uphill fight without a specific coverage exception or plan rider.
Also note: ICD-10 code Z30.2 (encounter for sterilization) appears in the policy's diagnosis code list. If endometrial ablation is being performed alongside or in the context of a sterilization encounter, document the medical necessity of the ablation separately and clearly. Bundling issues and medical necessity questions are more likely when sterilization and ablation appear on the same claim.
Coverage Indications at a Glance
| Indication | Status | Relevant CPT Codes | Relevant ICD-10 Codes | Notes |
|---|---|---|---|---|
| Excessive uterine bleeding — thermal ablation | Covered when criteria met | 58353 | N92.5, N85.8 | Medical necessity documentation required |
| Excessive uterine bleeding — cryoablation | Covered when criteria met | 58356 | N92.5, N85.8 | Includes endometrial curettage when performed |
| Excessive uterine bleeding — hysteroscopic ablation | Covered when criteria met | 58563 | N92.5, N85.8 | Includes electrosurgical and other methods |
| Uterine leiomyoma (submucous, intramural, unspecified) | Covered when criteria met | 58353, 58356, 58563 | D25.0, D25.1, D25.9 | Document size, symptoms, and prior treatment |
| Uterine polyps | Covered when criteria met | 58353, 58356, 58563 | N84.0, N84.1 | Must support medical necessity for ablation specifically |
| Intrauterine synechiae | Covered when criteria met | 58563 | N85.6 | Hysteroscopic approach typically indicated |
| Other noninflammatory uterine disorders | Covered when criteria met | 58353, 58356, 58563 | N85.8 | Strong documentation required for unlisted conditions |
| Dysmenorrhea | Covered when criteria met | 58353, 58356, 58563 | N94.6 | Must document failure of conservative management |
| Unlisted hysteroscopy procedure | Experimental/Investigational | 58579 | — | Expect denial; do not use as a fallback code |
| Unlisted female genital system procedure | Experimental/Investigational | 58999 | — | Expect denial; do not use as a fallback code |
| Sterilization encounter | Incidental diagnosis | — | Z30.2 | Document ablation medical necessity independently |
| Abnormal imaging findings — uterus | Supporting diagnosis | — | R93.89 | Use to support medical necessity, not as primary dx |
Cigna Endometrial Ablation Billing Guidelines and Action Items 2026
The effective date is February 14, 2026. These action items need to happen before claims go out under the updated policy.
| # | Action Item |
|---|---|
| 1 | Audit your charge capture for CPT 58579 and 58999 today. Pull the last 90 days of endometrial ablation claims and flag any that used 58579 or 58999. Under MM 0013, both codes are now explicitly experimental and investigational. If those codes were billed to Cigna and paid, expect potential recoupment risk. If they're in your current charge master, add a billing alert or workflow flag before February 14, 2026. |
| 2 | Map every ablation device or technique you use to 58353, 58356, or 58563. If you offer a balloon thermal system, a cryoablation device, or hysteroscopic resection, confirm which covered code applies. Document that mapping in your charge capture protocols. If a technique doesn't map cleanly to any of the three covered codes, escalate to your compliance officer before billing. |
| 3 | Confirm prior authorization requirements by plan. Cigna commercial, self-funded, and exchange plans can have different prior auth rules. Call or check Cigna's provider portal for each plan type your patients carry. Build this check into your pre-authorization workflow for all three covered CPT codes before scheduling. |
| 4 | Tighten your ICD-10 documentation for medical necessity. The diagnosis codes that support medical necessity here are specific: N92.5, N94.6, N84.0, N84.1, N85.6, N85.8, D25.0, D25.1, D25.9. A claim for CPT 58353 submitted with an unsupported or vague diagnosis code will fail medical necessity review. Train your clinical documentation team to capture the right ICD-10 at the point of care, not at claim submission. |
| 5 | Flag Z30.2 claims for dual-review. If a patient has a Z30.2 (sterilization) encounter in the same visit or episode as an endometrial ablation, document the ablation's medical necessity completely separately. Two procedures, two documented rationales. Claims that blend sterilization and ablation without clear independent documentation are a common denial trigger. |
| 6 | Update your denial tracking for MM 0013. Add a filter in your denial management workflow for Cigna claims involving CPT 58353, 58356, 58563, 58579, and 58999. After the February 14, 2026 effective date, track denial reason codes on these claims for 60 days. If you see a spike in medical necessity or experimental-designation denials, you'll know your team needs additional training or documentation support. |
| 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 Endometrial Ablation Under MM 0013
Covered CPT Codes (When Medical Necessity Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| 58353 | CPT | Endometrial ablation, thermal, without hysteroscopic guidance |
| 58356 | CPT | Endometrial cryoablation with ultrasonic guidance, including endometrial curettage, when performed |
| 58563 | CPT | Hysteroscopy, surgical; with endometrial ablation (e.g., endometrial resection, electrosurgical ablation, thermoablation) |
Not Covered / Experimental Codes
| Code | Type | Description | Reason |
|---|---|---|---|
| 58579 | CPT | Unlisted hysteroscopy procedure, uterus | Considered Experimental/Investigational/Unproven |
| 58999 | CPT | Unlisted procedure, female genital system (nonobstetrical) | Considered Experimental/Investigational/Unproven |
Key ICD-10-CM Diagnosis Codes
| Code | Description |
|---|---|
| D25.0 | Submucous leiomyoma of uterus |
| D25.1 | Intramural leiomyoma of uterus |
| D25.9 | Leiomyoma of uterus, unspecified |
| N84.0 | Polyp of corpus uteri |
| N84.1 | Polyp of cervix uteri |
| N85.6 | Intrauterine synechiae |
| N85.8 | Other specified noninflammatory disorders of uterus |
| N92.5 | Other specified irregular menstruation |
| N94.6 | Dysmenorrhea, unspecified |
| R93.89 | Abnormal findings on diagnostic imaging of other specified body structures |
| Z30.2 | Encounter for sterilization |
A note on reimbursement: MM 0013 is a coverage policy, not a fee schedule. Actual reimbursement rates for CPT 58353, 58356, and 58563 depend on the specific Cigna plan contract, whether the provider is in-network, and the plan's allowed amount schedule. Coverage criteria being met does not guarantee a specific payment amount. Confirm contracted rates separately through your Cigna provider agreement.
If your practice performs a high volume of endometrial ablations and you're unsure how this modified policy maps to your current billing patterns, talk to your billing consultant before February 14, 2026. The experimental designation on 58579 and 58999 is the sharpest edge in this update. It's not ambiguous — Cigna will deny those codes.
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