Billing code 61705: Aneurysm surgeryMedicare rate & RVUs

Medicare pays $2,501.39 for 61705 nationally in a facility.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 61705 covers

This code describes surgical trapping of an aneurysm in the intracranial, cervical, carotid, or vertebral circulation. Trapping closes the vessel segments around the aneurysm; a bypass may be used to maintain blood flow beyond the trapped segment. Neurosurgeons typically perform this operation in a hospital operating room for aneurysms selected for open surgical management, rather than endovascular treatment. The code includes the bypass when one is performed as part of the aneurysm-trapping operation.

Select the code from the operative report’s documented technique and vascular site, not merely from the diagnosis of aneurysm. Documentation should identify the aneurysm, the vessel segments treated, the trapping performed, and any bypass. Medicare applies a 90-day global period, including the day-before preoperative visit and related postoperative care. For multiple procedures in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate. Assistant-at-surgery payment may be allowed; co-surgeon payment requires supporting documentation, and team surgery is not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 61705 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

61705 rates by state

Office rate range in each state. Select a state to see its payment localities.

How the 61705 rate is calculated

Each of 61705’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 61705

61705 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 51

61705 compared with similar codes

How to choose

61700Aneurysm repair

61700 represents a different aneurysm-surgery circumstance. Choose 61705 when the operative report documents trapping, whether or not a bypass is performed.

61702Aneurysm surgery

Both codes concern aneurysm surgery, but 61705 specifically describes trapping with or without bypass. Base selection on the documented operation, not aneurysm diagnosis alone.

61703Arterial clamping

61703 is another aneurysm-surgery option; 61705 is the choice when the surgeon traps the aneurysm, with or without bypass.

Codes related to 61705

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates