CPT code 21182: Cranial cranioplasty, multiple autografts, small defect2026 Medicare rate & RVUs in Washington, DC area

Reports cranioplasty using multiple autografts to rebuild a small cranial bone defect, with code selection based on the total defect area.

CMS RVU26DEffective Oct 1, 2026One payment locality

In Washington, DC area, Medicare pays $2,033.82 for 21182 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$2,033.82Hospital or facility

Check a contract rate as a % of Medicare · 21182 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 21182 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Washington, DC area
  2. What 21182 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 21182 covers

This service rebuilds a cranial bone defect with multiple autografts, including harvesting the grafts. It is typically performed by a neurosurgeon or craniofacial plastic surgeon in an operating room for a patient who needs structural reconstruction after a defect or prior cranial surgery. The code represents the smallest defect-area tier in the 21182–21184 series; the operative record should support the defect’s total area and the use of multiple autografts.

Medicare assigns a 90-day global period, including the day-before preoperative visit and related postoperative care during that period. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others are subject to the standard multiple-procedure reduction. An assistant at surgery may be paid. Co-surgeon payment requires supporting documentation, and team surgery is not permitted. Modifier 50 is inappropriate for this anatomy and descriptor.

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 21182

Across 109 of 109 payment localities, the facility rate for 21182 runs from $1,670.19 in Arkansas to $2,329.57 in Alaska. Washington, DC area pays $2,033.82. The RVUs are the same everywhere; the geographic indexes change the dollars.

21182 in Washington, DC area vs other payment areas
  1. Washington, DC area · this page$2,033.82
  2. Los Angeles, CA · California$1,934.49−$99.33
  3. Miami, FL · Florida$2,174.61+$140.79
  4. Chicago, IL · Illinois$2,114.66+$80.84
  5. Manhattan, NY · New York$2,128.19+$94.37
  6. Alaska · Alaska$2,329.57+$295.75
  7. Alabama · Alabama$1,689.69−$344.13

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

Every other payment area

21182 in every other Medicare payment locality
Payment localityOfficeFacility
ArkansasArkansas—$1,670.19
ArizonaArizona—$1,802.38
Bakersfield, CACalifornia—$1,848.91
Chico, CACalifornia—$1,832.40
El Centro, CACalifornia—$1,833.38
Fresno, CACalifornia—$1,832.40
Hanford, CACalifornia—$1,832.40
Madera, CACalifornia—$1,832.40

21182 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
21182 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 21182 in every payment locality

How the 21182 rate is calculated

Each of 21182’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 · 21182

RVUs × geographic indexes × conversion factor

Office or facility?

Work31.77

31.77 RVUs× 1.000 GPCI

Practice expense17.69

17.69 RVUs× 1.000 GPCI

Malpractice5.90

5.90 RVUs× 1.000 GPCI

Adjusted RVUs

55.3600

Conversion factor

$33.4009

Medicare rate

$1,849.07

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

1,903

Code
21182
Physician work
31.77
Practice expense
17.69
Malpractice
5.90

GPCI2026.csv

39

Locality
Washington, DC area
Physician work
1.054
Practice expense
1.178
Malpractice
1.113
Facility calculation for 21182 in Washington, DC area
ComponentRVULocality factorAdjusted
Physician work31.77× 1.05433.4856
Practice expense17.69× 1.17820.8388
Malpractice5.90× 1.1136.5667
Total RVUs60.8911
Conversion factor× 33.4009

Facility rate, Washington, DC area$2033.82

Facility: (31.77 × 1.054 + 17.69 × 1.178 + 5.9 × 1.113) × $33.4009 = $2033.82

Open 21182 in the RVU calculator

Payment rules and modifiers for 21182

21182 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 21182

Cranial cranioplasty, multiple autografts, small defect

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)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)2Paid.
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.69/0.21Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 21182

Cranial cranioplasty, multiple autografts, small defect

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 51 · payment effect

With and without the modifier

21182 without 51 · national facility

$1,849.07

Cranial cranioplasty, multiple autografts, small defect

21182-51 · Second procedure: 50%

$924.54

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

How 21182 has changed in Washington, DC area

21182 · 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$2,033.82RVU26D
2026-07-01Not available in this setting$2,033.82RVU26C
2026-04-01Not available in this setting$2,033.82RVU26B
2026-01-01Not available in this setting$2,033.82RVU26A
2025-10-01Not available in this setting$2,309.56RVU25D
2025-07-01Not available in this setting$2,309.56RVU25C
2025-04-01Not available in this setting$2,309.56RVU25B
2025-01-01Not available in this setting$2,309.56RVU25A
2024-10-01Not available in this setting$2,356.07RVU24D
2024-07-01Not available in this setting$2,356.07RVU24C
2024-04-01Not available in this setting$2,356.07RVU24B
2024-03-09Not available in this setting$2,356.07RVU24AR
2024-01-01Not available in this setting$2,317.62RVU24A
2023-10-01Not available in this setting$2,425.23RVU23D
2023-07-01Not available in this setting$2,425.23RVU23C
2023-04-01Not available in this setting$2,425.23RVU23B
2023-01-01Not available in this setting$2,425.23RVU23A
2022-10-01Not available in this setting$2,482.66RVU22D
2022-07-01Not available in this setting$2,482.66RVU22C
2022-04-01Not available in this setting$2,482.66RVU22B
2022-01-01Not available in this setting$2,482.66RVU22A
2021-10-01Not available in this setting$2,488.62RVU21D
2021-07-01Not available in this setting$2,488.62RVU21C
2021-04-01Not available in this setting$2,488.62RVU21B
2021-01-01Not available in this setting$2,488.62RVU21A
2020-10-01Not available in this setting$2,527.74RVU20D
2020-07-01Not available in this setting$2,527.74RVU20C
2020-04-01Not available in this setting$2,527.74RVU20B
2020-01-01Not available in this setting$2,527.74RVU20A
2019-10-01Not available in this setting$2,483.66RVU19D
2019-07-01Not available in this setting$2,483.66RVU19C
2019-04-01Not available in this setting$2,472.30RVU19B
2019-01-01Not available in this setting$2,472.30RVU19A
2018-10-01Not available in this setting$2,482.14RVU18D
2018-07-01Not available in this setting$2,482.14RVU18C
2018-04-01Not available in this setting$2,482.14RVU18B
2018-01-01Not available in this setting$2,482.14RVU18AR1
2017-10-01Not available in this setting$2,297.40RVU17D
2017-07-01Not available in this setting$2,297.40RVU17C
2017-04-01Not available in this setting$2,297.40RVU17B
2017-01-01Not available in this setting$2,297.40RVU17A
2016-10-01Not available in this setting$2,256.30RVU16D
2016-07-01Not available in this setting$2,256.30RVU16C
2016-04-01Not available in this setting$2,256.30RVU16B
2016-01-01Not available in this setting$2,256.30RVU16A
2015-10-01Not available in this setting$2,222.34RVU15D
2015-07-01Not available in this setting$2,222.34RVU15C
2015-04-01Not available in this setting$2,211.28RVU15B
2015-01-01Not available in this setting$2,211.28RVU15A
2014-10-01Not available in this setting$2,197.73RVU14D
2014-07-01Not available in this setting$2,197.73RVU14C
2014-04-01Not available in this setting$2,197.73RVU14B
2014-01-01Not available in this setting$2,197.73RVU14A
2013-10-01Not available in this setting$2,377.94RVU13D
2013-07-01Not available in this setting$2,377.94RVU13C
2013-04-01Not available in this setting$2,377.94RVU13B
2013-01-01Not available in this setting$2,377.94RVU13AR

Price 21182 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

21182 billing questions

How do I choose 21182 rather than 21183 or 21184?

These codes distinguish cranial reconstruction by total defect area. Use 21182 for the smallest tier and check the operative measurements against the applicable code-family thresholds.

Does 21182 include harvesting the bone grafts?

Yes. The multiple autografts are included, including obtaining the grafts; do not report graft harvesting separately as part of this service.

What documentation supports reporting 21182?

Document the cranial defect and its total area, the reconstruction performed, and that multiple autografts were used and obtained.

Can 21182 be reported with another procedure performed in the same session?

It may be reported with other separately supported procedures when appropriate. Medicare applies its standard multiple-procedure reduction when multiple procedures are performed in the same session.

Can an assistant or co-surgeon be reported for this operation?

Medicare may pay for an assistant at surgery. Co-surgeon payment requires supporting documentation; team surgery is not permitted.

Does modifier 50 apply to 21182?

No. The anatomy and service represented by 21182 make modifier 50 inappropriate.

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 21182PPRRVU2026_Oct_nonQPP.csv, line 1,903 (RVU26D)
Geographic factors for Washington, DC areaGPCI2026.csv, line 39 (RVU26D)

Open CMS sourceHow we calculate rates

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