Mississippi (MS) Medicare rates & GPCIs—Q1 2023

ZIP codes in this locality Copy link

Mississippi covers 541 ZIP codes across MS, per the CMS ZIP-to-locality crosswalk (Q2 2022).

We don't have the Q1 2023 ZIP-to-locality crosswalk file yet; figures are from the Q2 2022 release and may not reflect Q1 2023 changes.

38601
38602
38603
38606
38609
38610
38611
38614
38617
38618
38619
38620
38621
38622
38623
38625
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38658
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38661
38663
38664
38665
38666
38668
38669
38670
38671
38672
38673
38674
38675
38676
38677
38679

Show all 541 ZIP codes

38680
38683
38685
38686
38701
38702
38703
38704
38720
38721
38722
38723
38725
38726
38730
38731
38732
38733
38736
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38744
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38751
38753
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38756
38758
38759
38760
38761
38762
38763
38764
38765
38767
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38771
38772
38773
38774
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38778
38780
38781
38782
38801
38802
38803
38804
38820
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38824
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38841
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38851
38852
38854
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38860
38862
38863
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38871
38873
38874
38875
38876
38877
38878
38879
38880
38901
38902
38912
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38960
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39038
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39066
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39250
39269
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39320
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39421
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39474
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39500
39501
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39520
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39601
39602
39603
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39638
39641
39643
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39661
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39668
39669
39701
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39750
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39759
39760
39762
39766
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39769
39771
39772
39773
39776

Have a service address? Look up its ZIP and date of service to confirm the locality.

GPCI history Copy link

This locality's GPCIs in each release on file, newest first. Releases with unchanged GPCIs share a row.

Release	Work	PE	MP
January 2026 to October 2026	1.000	0.861	0.739
January 2024 to October 2025	1.000	0.852	0.768
January 2023 to October 2023 (this page)	1.000	0.847	0.720
January 2021 to October 2022	1.000	0.842	0.671
January 2020 to October 2020	1.000	0.856	0.521
January 2018 to October 2019	1.000	0.870	0.370
January 2017 to October 2017	1.000	0.867	0.492
January 2015 to October 2016	1.000	0.864	0.613
April 2014 to October 2014	1.000	0.865	0.687
January 2013 to April 2013	1.000	0.866	0.761

Example rates in Mississippi Copy link

National and local Office (non-facility) amounts for frequently reviewed codes in the Q1 2023 release, before sequestration. Conversion factor: 2023 standard (non-QP) physician conversion factor, $33.8872.

Code	National	Local	Difference
99214	$128.43	$118.13	-8.0%
99213	$90.82	$83.23	-8.4%
99215	$179.94	$166.07	-7.7%
66984	$541.86	$494.69	-8.7%
99204	$167.40	$154.28	-7.8%
92014	$127.08	$114.82	-9.6%
97110	$29.82	$27.55	-7.6%
88305	$71.84	$64.65	-10.0%
97530	$37.61	$34.10	-9.3%
99203	$112.84	$103.14	-8.6%

Need the facility amount, a modifier, or a date of service? Use the rate calculator, already set to this locality. Or start with your field's usual procedure mix on the specialty fee schedules.

Common questions Copy link

Why do Medicare rates in Mississippi differ from the national amount?

For nationally priced Physician Fee Schedule services, Medicare adjusts each code's work, practice-expense, and malpractice RVUs by this locality's three GPCIs before applying the conversion factor. Local costs for physician work, running an office, and liability insurance therefore move the final amount up or down. Mississippi currently has all three GPCIs at or below the national baseline, so services priced with the standard RVU formula usually come out below the national amount for the Q1 2023 release.

How do I know if my address is in this locality?

Medicare payment localities are geographic fee-schedule areas, commonly defined with county boundaries. CMS uses the ZIP code where the service was performed to assign a claim to its contractor and locality. Look up your ZIP to find your locality. A few ZIPs nationally span multiple localities and need ZIP+4 to resolve exactly.

Do commercial insurers or Medicare Advantage plans use this locality?

Original Medicare uses these PFS localities directly. Commercial and Medicare Advantage plans are not required to use the same locality structure. A contract may pay a percentage of Medicare, but its own wording decides which Medicare release, percentage, geography, and adjustments apply.

Does my locality affect what I owe as a patient?

For a covered service, a higher allowed amount in your locality usually means a higher 20% coinsurance. The effect depends on the code, the beneficiary's deductible, supplemental coverage, and other claim circumstances.

Why did my Medicare payment change even though I didn't change what I billed?

CMS publishes updated PFS files during the year. A code's amount can change because of conversion-factor, RVU, policy, or correction updates. GPCIs are usually set once a year in the fee schedule rule, though later files can correct them. See what changed each release.

Source & method Copy link

We compute GPCIs and rates from the CMS Medicare Physician Fee Schedule Q1 2023 release (effective January 2023). ZIP coverage from the CMS ZIP-to-locality crosswalk, Q2 2022 release. Example amounts use the standard (non-QP) physician conversion factor ($33.8872) and apply this locality's GPCIs to nationally priced Office (non-facility) RVUs, before the ~2% sequestration cut. Past releases are never edited, so a rate for an earlier quarter always matches what CMS published for it.

Geographic practice cost indices (Q1 2023) · rvu23a-updated-01-31-2023.zip (GPCI2023.csv row 70)

ZIP code to carrier locality crosswalk (Q2 2022) · Zip-Code-to-Carrier-Locality.zip (ZIP5_APR2022_V2.txt)

Mississippi

Price a code in Mississippi Copy link

ZIP codes in this locality Copy link

GPCI history Copy link

Example rates in Mississippi Copy link

Common questions Copy link

Source & method Copy link

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