CPT code 61591: Skull-base approach, postauricular infratemporal route2026 Medicare rate & RVUs in Washington, DC area

Reports a postauricular infratemporal surgical route to the middle cranial fossa when operative access requires the specified skull-base approach and associated bone work.

CMS RVU26DEffective Oct 1, 2026One payment locality158 Medicare services in 2024

In Washington, DC area, Medicare pays $3,059.72 for 61591 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$3,059.72Hospital or facility

Check a contract rate as a % of Medicare · 61591 nationwide

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

We’ll open 61591 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Washington, DC area
  2. What 61591 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 61591 covers

This code represents a postauricular infratemporal route to the middle cranial fossa, generally used when a skull-base lesion requires access through the temporal bone from behind the ear. The operation may include petrous apicectomy and facial nerve mobilization, but the approach does not include resection of the internal auditory canal. Neurosurgeons and otolaryngologists with skull-base expertise may perform it, often in a hospital operating room and sometimes as part of a coordinated surgical team.

Select the code from the operative approach and documented work, not from the diagnosis alone. The report should identify the postauricular route and describe the bone work, facial nerve handling, and whether the internal auditory canal was resected. Medicare assigns a 90-day global period, including the day-before preoperative visit and related postoperative care during that period. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and the others at 50%. Modifier 50 identifies bilateral surgery and is paid at 150%. Assistant-at-surgery payment may be available; 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 Washington, DC area compares for 61591

Across 109 of 109 payment localities, the facility rate for 61591 runs from $2,474.03 in Arkansas to $3,432.83 in Alaska. Washington, DC area pays $3,059.72. The RVUs are the same everywhere; the geographic indexes change the dollars.

61591 in Washington, DC area vs other payment areas
  1. Washington, DC area · this page$3,059.72
  2. Los Angeles, CA · California$2,875.46−$184.26
  3. Miami, FL · Florida$3,389.60+$329.88
  4. Chicago, IL · Illinois$3,280.98+$221.26
  5. Manhattan, NY · New York$3,238.81+$179.09
  6. Alaska · Alaska$3,432.83+$373.11
  7. Alabama · Alabama$2,507.16−$552.56

Other areas in District of Columbia first, then benchmark localities. Bars start at $0.

Every other payment area

61591 in every other Medicare payment locality
Payment localityOfficeFacility
ArkansasArkansas—$2,474.03
ArizonaArizona—$2,698.13
Bakersfield, CACalifornia—$2,745.21
Chico, CACalifornia—$2,714.72
El Centro, CACalifornia—$2,716.60
Fresno, CACalifornia—$2,714.72
Hanford, CACalifornia—$2,714.72
Madera, CACalifornia—$2,714.72

61591 rates by state

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

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
61591 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

See 61591 in every payment locality

How the 61591 rate is calculated

Each of 61591’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.

How the rate is built · 61591

RVUs × geographic indexes × conversion factor

Office or facility?

Work45.84

45.84 RVUs× 1.000 GPCI

Practice expense26.12

26.12 RVUs× 1.000 GPCI

Malpractice11.25

11.25 RVUs× 1.000 GPCI

Adjusted RVUs

83.2100

Conversion factor

$33.4009

Medicare rate

$2,779.29

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Washington, DC area inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

6,829

Code
61591
Physician work
45.84
Practice expense
26.12
Malpractice
11.25

GPCI2026.csv

39

Locality
Washington, DC area
Physician work
1.054
Practice expense
1.178
Malpractice
1.113
Facility calculation for 61591 in Washington, DC area
ComponentRVULocality factorAdjusted
Physician work45.84× 1.05448.3154
Practice expense26.12× 1.17830.7694
Malpractice11.25× 1.11312.5213
Total RVUs91.6060
Conversion factor× 33.4009

Facility rate, Washington, DC area$3059.72

Facility: (45.84 × 1.054 + 26.12 × 1.178 + 11.25 × 1.113) × $33.4009 = $3059.72

Open 61591 in the RVU calculator

Payment rules and modifiers for 61591

61591 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 61591

Skull-base approach, postauricular infratemporal route

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
Assistant at surgery (80/81/82/AS)2Paid.
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)2Permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.11/0.76/0.13Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 61591

Skull-base approach, postauricular infratemporal route

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

61591 without 50 · national facility

$2,779.29

Skull-base approach, postauricular infratemporal route

61591-50 · Bilateral: 150%

$4,168.94

Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).

When to use modifier 50

How 61591 has changed in Washington, DC area

61591 · Office / nonfacility

Rate unavailable

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release
Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$3,059.72RVU26D
2026-07-01Not available in this setting$3,059.72RVU26C
2026-04-01Not available in this setting$3,059.72RVU26B
2026-01-01Not available in this setting$3,059.72RVU26A
2025-10-01Not available in this setting$3,361.81RVU25D
2025-07-01Not available in this setting$3,361.81RVU25C
2025-04-01Not available in this setting$3,361.81RVU25B
2025-01-01Not available in this setting$3,361.81RVU25A
2024-10-01Not available in this setting$3,445.46RVU24D
2024-07-01Not available in this setting$3,445.46RVU24C
2024-04-01Not available in this setting$3,445.46RVU24B
2024-03-09Not available in this setting$3,445.46RVU24AR
2024-01-01Not available in this setting$3,389.22RVU24A
2023-10-01Not available in this setting$3,551.26RVU23D
2023-07-01Not available in this setting$3,551.26RVU23C
2023-04-01Not available in this setting$3,551.26RVU23B
2023-01-01Not available in this setting$3,551.26RVU23A
2022-10-01Not available in this setting$3,613.29RVU22D
2022-07-01Not available in this setting$3,613.29RVU22C
2022-04-01Not available in this setting$3,613.29RVU22B
2022-01-01Not available in this setting$3,613.29RVU22A
2021-10-01Not available in this setting$3,622.17RVU21D
2021-07-01Not available in this setting$3,622.17RVU21C
2021-04-01Not available in this setting$3,622.17RVU21B
2021-01-01Not available in this setting$3,622.17RVU21A
2020-10-01Not available in this setting$3,634.03RVU20D
2020-07-01Not available in this setting$3,634.03RVU20C
2020-04-01Not available in this setting$3,634.03RVU20B
2020-01-01Not available in this setting$3,634.03RVU20A
2019-10-01Not available in this setting$3,621.30RVU19D
2019-07-01Not available in this setting$3,621.30RVU19C
2019-04-01Not available in this setting$3,621.30RVU19B
2019-01-01Not available in this setting$3,621.30RVU19A
2018-10-01Not available in this setting$3,581.58RVU18D
2018-07-01Not available in this setting$3,581.58RVU18C
2018-04-01Not available in this setting$3,581.58RVU18B
2018-01-01Not available in this setting$3,581.58RVU18AR1
2017-10-01Not available in this setting$3,614.16RVU17D
2017-07-01Not available in this setting$3,614.16RVU17C
2017-04-01Not available in this setting$3,614.16RVU17B
2017-01-01Not available in this setting$3,614.16RVU17A
2016-10-01Not available in this setting$3,664.77RVU16D
2016-07-01Not available in this setting$3,664.77RVU16C
2016-04-01Not available in this setting$3,664.77RVU16B
2016-01-01Not available in this setting$3,664.77RVU16A
2015-10-01Not available in this setting$3,691.87RVU15D
2015-07-01Not available in this setting$3,691.87RVU15C
2015-04-01Not available in this setting$3,673.50RVU15B
2015-01-01Not available in this setting$3,673.50RVU15A
2014-10-01Not available in this setting$3,579.36RVU14D
2014-07-01Not available in this setting$3,579.36RVU14C
2014-04-01Not available in this setting$3,579.36RVU14B
2014-01-01Not available in this setting$3,579.36RVU14A
2013-10-01Not available in this setting$3,504.79RVU13D
2013-07-01Not available in this setting$3,504.79RVU13C
2013-04-01Not available in this setting$3,504.79RVU13B
2013-01-01Not available in this setting$3,504.79RVU13AR

Price 61591 for an earlier date of service

Where the Washington, DC area rate applies

Washington, DC area is a Medicare payment area, not a city. Our Census mapping connects it to 1 cities and communities in District of Columbia. Some span more than one payment area; confirm with the service ZIP.

  • Washington

Browse all communities in District of Columbia

61591 billing questions

How does 61591 differ from 61590?

Both describe infratemporal routes to the middle cranial fossa. 61591 is the postauricular approach; 61590 describes the preauricular approach.

What operative details support reporting 61591?

Document the postauricular route and the skull-base access performed, including relevant petrous bone work and facial nerve mobilization. The internal auditory canal is not resected with this approach code.

Does 61591 include removal of the skull-base lesion?

The code identifies the approach and associated access work, rather than establishing that every lesion resection is included. Code any separately reportable definitive procedure only when the operative work and applicable CPT instructions support it.

How is 61591 paid when another procedure is performed in the same session?

Under the standard multiple procedure rule, the highest-valued procedure is paid in full and other procedures are paid at 50%. The 90-day global includes the day-before preoperative visit and related postoperative care.

Can an assistant or co-surgeon be reported?

Assistant-at-surgery payment may be made. Co-surgeon payment requires supporting documentation, and CMS permits team surgery.

When is modifier 50 appropriate for 61591?

Use modifier 50 when the documented procedure is bilateral. CMS pays a bilateral procedure reported with modifier 50 at 150%.

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

Show the CMS file lines behind this rate
RVUs for 61591PPRRVU2026_Oct_nonQPP.csv, line 6,829 (RVU26D)
Geographic factors for Washington, DC areaGPCI2026.csv, line 39 (RVU26D)

Open CMS sourceHow we calculate rates

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