Summary: The Centers for Medicare & Medicaid Services modified its coverage policy for the Gravlee Jet Washer, effective May 15, 2026. Here's what billing teams need to know before that date.
The Gravlee Jet Washer has a long and specific history in Medicare coverage policy. This CMS modification — while limited in published detail — signals that Gravlee Jet Washer billing and reimbursement rules are shifting. The policy does not list specific CPT or HCPCS codes in the current published data, which is itself a problem your team needs to get ahead of. If you bill for intrauterine lavage or related gynecologic procedures that touch this equipment, read this before May 15, 2026.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | CMS |
| Policy | Gravlee Jet Washer |
| Policy Code | N/A |
| Change Type | Modified |
| Effective Date | May 15, 2026 |
| Impact Level | Medium — limited code data published; ambiguity creates denial risk |
| Specialties Affected | Gynecology, OB/GYN, women's health billing |
| Key Action | Contact your Medicare Administrative Contractor for code-level guidance before May 15, 2026 |
CMS Gravlee Jet Washer Coverage Criteria and Medical Necessity Requirements 2026
The Gravlee Jet Washer is a device used for intrauterine lavage — specifically for collecting cells from the endometrial cavity for cytologic evaluation. It has been a niche but real coverage question for gynecology billing teams for decades. CMS has addressed it directly in coverage policy because the clinical use case is narrow and the medical necessity bar is specific.
The CMS Gravlee Jet Washer coverage policy governs whether Medicare will pay for procedures using this device. The modification effective May 15, 2026 means something in that coverage framework changed. The published policy data available at this time does not include revised criteria text, which is frustrating — but not unusual for CMS modifications in the early publication window.
What we do know from CMS's historical position: medical necessity for the Gravlee Jet Washer has centered on endometrial cytology as a diagnostic tool. Coverage has generally required that the procedure be used for the detection of endometrial carcinoma or its precursors. That's a narrow clinical window, and CMS has historically been skeptical of broader applications.
The real issue here is that without published criteria in the current policy data, your team is operating with incomplete information. That's not a reason to ignore this change — it's a reason to move fast. Pull the source policy at the CMS link, check your MAC's local coverage determination (LCD) for any companion guidance, and don't wait until May 14 to figure out what's different.
If you bill gynecologic diagnostic procedures under Medicare and haven't reviewed prior authorization requirements for device-specific procedures recently, do it now. Prior auth workflows for niche devices like this are easy to let slip, and a missed prior authorization requirement on a modified policy is a clean path to claim denial.
CMS Gravlee Jet Washer Exclusions and Non-Covered Indications
CMS has historically not covered the Gravlee Jet Washer for routine gynecologic screening in the absence of clinical indicators supporting medical necessity for endometrial evaluation. General wellness visits, routine pelvic exams, and screening procedures without documented clinical suspicion of endometrial pathology have not met the medical necessity threshold.
The published policy modification does not include updated exclusion language in the data available. That gap matters. If CMS narrowed or broadened the non-covered indications in this modification, your billing team won't know until the full policy text is published or your MAC issues guidance.
Check the source document directly at the CMS policy link. If your compliance officer hasn't been looped in on this one, loop them in now. Ambiguous coverage policy modifications with no published code data are exactly the situations where claims go out incorrectly and denials come back weeks later.
Coverage Indications at a Glance
The policy data published at this time does not include indication-level criteria. The table below reflects CMS's historical coverage position for the Gravlee Jet Washer based on prior policy versions. Verify against the updated policy text before billing after May 15, 2026.
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Endometrial cytology for suspected endometrial carcinoma | Historically Covered | Not specified in current policy data | Medical necessity documentation required |
| Endometrial cytology for precancerous endometrial evaluation | Historically Covered | Not specified in current policy data | Clinical indicators must be documented |
| Routine gynecologic screening without clinical indication | Not Covered | N/A | Does not meet medical necessity criteria |
| General wellness or preventive gynecologic exam | Not Covered | N/A | Not within covered indications |
This table will be updated when CMS publishes the full modified policy text. Confirm your indication-level billing against the final published criteria before the effective date of May 15, 2026.
CMS Gravlee Jet Washer Billing Guidelines and Action Items 2026
The absence of published code data in this policy modification is the single biggest billing risk right now. Here's what your team should do before May 15, 2026.
| # | Action Item |
|---|---|
| 1 | Pull the full policy source now. Go to the CMS policy link directly. If the criteria text has been updated, your team needs to read it line by line — not wait for a summary. The effective date is May 15, 2026, and any claims submitted on or after that date must conform to the modified policy. |
| 2 | Contact your Medicare Administrative Contractor. Your MAC is the authoritative source for how this CMS coverage policy modification applies in your region. Ask specifically whether any local coverage determination has been issued or updated alongside this change. A MAC-level LCD can add or restrict criteria beyond the national policy. |
| 3 | Audit your charge capture for intrauterine lavage procedures. Even without confirmed code data, pull every claim from the past 12 months where a Gravlee Jet Washer or comparable intrauterine lavage device was used. Review how those claims were coded and what diagnosis codes supported medical necessity. That audit tells you where your exposure is. |
| 4 | Review your medical necessity documentation templates. If your providers document endometrial cytology procedures, your templates need to capture the clinical indicators CMS requires. Vague documentation is the fastest route to claim denial. Update your templates to reflect the specific indications CMS covers — suspected endometrial carcinoma or precancerous change, not general screening. |
| 5 | Clarify prior authorization requirements before May 15. If this modification added a prior authorization requirement, claims submitted without it will deny — and you won't know until after the fact. Confirm with your MAC whether prior auth applies to any codes affected by this policy change. |
| 6 | Flag this for your compliance officer. A modified CMS coverage policy with no published code data and an approaching effective date is a compliance gap. Your compliance officer should be tracking this, not finding out about it from a denied claim. Brief them before May 15, 2026. |
The honest read here: CMS Gravlee Jet Washer billing has always been a low-volume, high-scrutiny area. This modification, even without full published details, is a signal to tighten your documentation and confirm your coding approach with your MAC before the effective date.
| 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 Gravlee Jet Washer Under This CMS Policy
The current published policy data for this CMS modification does not list specific CPT, HCPCS Level II, or ICD-10-CM codes. This is not typical for a finalized policy modification — it likely reflects an early publication window before the full policy text is indexed.
Do not assume the codes you're currently using are unchanged. A policy modification without published code data could mean codes were added, removed, or have revised coverage criteria attached to them.
What to Do Instead of Guessing
Contact your MAC and ask for the complete code list associated with this modification. Ask specifically:
- Which CPT and HCPCS codes are covered under the modified CMS Gravlee Jet Washer policy?
- Have any codes been added or removed as part of this modification?
- Are there ICD-10-CM diagnosis codes required to support medical necessity for coverage?
This post will be updated when CMS publishes the complete code-level policy data. Check back at app.payerpolicy.org/p/cms/163-v1. and monitor your MAC's website for companion LCDs.
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