CPT code 66700: Ciliary body destruction, diathermy2026 Medicare rate & RVUs in South Dakota

In South Dakota, Medicare pays $447.72 for 66700 in the office and $326.47 when it’s performed in a hospital or facility.

Check a contract rate as a % of Medicare · 66700 nationwide

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

What 66700 covers

An ophthalmologist uses diathermy to destroy targeted ciliary body tissue, reducing aqueous humor production. This cyclodestructive procedure may be used for glaucoma that remains difficult to control, including when other pressure-lowering approaches have not achieved the clinical goal. It is generally performed in an operating room or other surgical setting, rather than as a routine office procedure.

Select this code when the operative method is diathermy; other ciliary body destruction methods have separate codes. The operative report should identify the treated eye, indication, and technique performed. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are 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.

How South Dakota compares for 66700

Across 109 of 109 payment localities, the office rate for 66700 runs from $411.21 in Arkansas to $590.74 in San Benito County, CA. South Dakota pays $447.72. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

66700 rates by state

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

See 66700 in every payment locality

How the 66700 rate is calculated

Each of 66700’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 66700

66700 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 50

Codes related to 66700

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

How 66700 has changed in South Dakota

Price 66700 for an earlier date of service

Where the South Dakota rate applies

South Dakota is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in South Dakota. Some span more than one payment area; confirm with the service ZIP.

• Aberdeen
• Agar
• Agency Village
• Akaska
• Albee
• Alcester
• Alexandria
• Allen

Browse all communities in South Dakota

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