CPT code 66605: Iridectomy, corneoscleral section2026 Medicare rate & RVUs in South Dakota

In South Dakota, Medicare pays $901.92 for 66605 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 66605 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 66605 covers

An ophthalmic surgeon uses a corneoscleral section to remove iris tissue. The operative report should make clear that iris tissue was excised and describe the incision and extent of removal. This code distinguishes the corneoscleral-section procedure from codes for lesion removal and glaucoma-specific peripheral, sector, or total iridectomy procedures.

Report the service for the operation documented, not simply because iris tissue was handled during another eye procedure. The operative note should support the approach and the work performed. Medicare assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Bilateral reporting with modifier 50 is paid at 150%. Medicare does not pay an assistant at surgery for this code; 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 66605

Across 109 of 109 payment localities, the facility rate for 66605 runs from $848.42 in Arkansas to $1,169.09 in Alaska. South Dakota pays $901.92. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

66605 rates by state

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

See 66605 in every payment locality

How the 66605 rate is calculated

Each of 66605’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 66605

66605 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 66605

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

How 66605 has changed in South Dakota

Price 66605 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