CPT code 61600: Skull base resection, anterior fossa, extradural2026 Medicare rate & RVUs in Mississippi

In Mississippi, Medicare pays $1,758.11 for 61600 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 61600 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 61600 covers

This service covers surgical removal of a lesion located outside the dura at the anterior cranial fossa, the skull-base region behind the forehead and above the nasal cavity. Neurosurgeons and otolaryngologists with skull-base expertise may perform the resection in a hospital operating room. A lesion extending from the sinonasal region toward the cranial base is one clinical setting in which this work may be part of a larger operation.

Select the code when the operative report supports both the anterior fossa location and the extradural compartment; intradural work or a lesion in another cranial fossa points to a different code. Document the lesion’s site, compartment, extent of resection, and operative work. This major surgery code has a 90-day global period that includes the day-before preoperative visit and related postoperative care. For multiple procedures in one session, the highest-valued procedure is paid in full and the others at 50%. Modifier 50 is inappropriate. Assistant-at-surgery payment may be made; co-surgeon payment requires supporting documentation, and team surgery is 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 Mississippi compares for 61600

Across 109 of 109 payment localities, the facility rate for 61600 runs from $1,708.11 in Arkansas to $2,353.05 in Alaska. Mississippi pays $1,758.11. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

61600 rates by state

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

See 61600 in every payment locality

How the 61600 rate is calculated

Each of 61600’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 61600

61600 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

Codes related to 61600

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

How 61600 has changed in Mississippi

Price 61600 for an earlier date of service

Where the Mississippi rate applies

Mississippi is a Medicare payment area, not a city. Our Census mapping connects it to 427 cities and communities in Mississippi. Some span more than one payment area; confirm with the service ZIP.

• Abbeville
• Aberdeen
• Ackerman
• Agricola
• Alcorn State University
• Algoma
• Alligator
• Amory

Browse all communities in Mississippi

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