CPT code 78630: CSF scan, cisternography2026 Medicare rate & RVUs in Atlanta, GA
A radionuclide cerebrospinal fluid scan tracks tracer movement through CSF spaces to assess circulation when a clinician needs functional imaging.
In Atlanta, GA, Medicare pays $299.64 for 78630 in the office.
Check a contract rate as a % of Medicare · 78630 nationwide
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 11 sections
What 78630 covers
This nuclear medicine study follows a radiotracer through cerebrospinal fluid spaces after intrathecal administration, with images obtained to evaluate CSF circulation and distribution. It is typically performed in a hospital nuclear medicine department or imaging center, with a nuclear medicine physician or radiologist interpreting the study. A clinician may request it when the diagnostic question concerns how CSF moves through the intracranial spaces rather than brain tissue appearance or shunt function alone.
Report 78630 for the CSF scan itself; the medical record should support the clinical question, the study performed, and the interpreting physician’s findings. CMS recognizes professional and technical components: report modifier 26 for the interpretation, TC for the equipment and staff, or neither modifier when billing the global service. The professional and technical services may be billed separately when performed by different entities. The scan’s findings should be distinguished from a targeted CSF leak study, ventricular study, or shunt evaluation when selecting among related nuclear medicine services.
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 Atlanta, GA compares for 78630
Across 109 of 109 payment localities, the office rate for 78630 runs from $255.02 in Arkansas to $414.46 in San Benito County, CA. Atlanta, GA pays $299.64. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Atlanta, GA · this page$299.64
- Rest of Georgia · Georgia$266.16−$33.48
- Los Angeles, CA · California$343.64+$44.00
- Washington, DC area · District of Columbia$344.08+$44.44
- Miami, FL · Florida$310.74+$11.10
- Chicago, IL · Illinois$300.42+$0.78
- Manhattan, NY · New York$341.58+$41.94
Other areas in Georgia first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlaskaAlaska | $321.62 | — |
| AlabamaAlabama | $259.49 | — |
| ArkansasArkansas | $255.02 | — |
| ArizonaArizona | $285.77 | — |
| Bakersfield, CACalifornia | $319.55 | — |
| Chico, CACalifornia | $319.27 | — |
| El Centro, CACalifornia | $319.28 | — |
| Fresno, CACalifornia | $319.27 | — |
| Hanford, CACalifornia | $319.27 | — |
| Madera, CACalifornia | $319.27 | — |
| Merced, CACalifornia | $319.27 | — |
| Modesto, CACalifornia | $319.27 | — |
| Napa, CACalifornia | $379.95 | — |
| Oxnard, CACalifornia | $342.95 | — |
| Redding, CACalifornia | $319.27 | — |
| Rest of CaliforniaCalifornia | $319.27 | — |
| Riverside, CACalifornia | $320.35 | — |
| Sacramento, CACalifornia | $337.72 | — |
| Salinas, CACalifornia | $336.53 | — |
| San Diego, CACalifornia | $346.49 | — |
| Marin County, CACalifornia | $405.26 | — |
| San Francisco, CACalifornia | $405.15 | — |
| San Benito County, CACalifornia | $414.46 | — |
| Santa Clara County, CACalifornia | $414.00 | — |
| San Luis Obispo, CACalifornia | $330.84 | — |
| Santa Cruz, CACalifornia | $351.39 | — |
| Santa Maria, CACalifornia | $338.35 | — |
| Santa Rosa, CACalifornia | $355.09 | — |
| Stockton, CACalifornia | $319.27 | — |
| Vallejo, CACalifornia | $379.79 | — |
| Visalia, CACalifornia | $319.27 | — |
| Yuba City, CACalifornia | $319.27 | — |
| ColoradoColorado | $311.36 | — |
| ConnecticutConnecticut | $316.47 | — |
| DelawareDelaware | $291.14 | — |
| Fort Lauderdale, FLFlorida | $300.79 | — |
| Rest of FloridaFlorida | $284.43 | — |
| Hawaii, Guam, HIHawaii | $330.07 | — |
| IowaIowa | $269.70 | — |
| IdahoIdaho | $271.30 | — |
| East St. Louis, ILIllinois | $276.45 | — |
| Rest of IllinoisIllinois | $273.06 | — |
| Suburban Chicago, ILIllinois | $304.60 | — |
| IndianaIndiana | $273.23 | — |
| KansasKansas | $267.09 | — |
| KentuckyKentucky | $264.43 | — |
| New Orleans, LALouisiana | $279.17 | — |
| Rest of LouisianaLouisiana | $263.50 | — |
| Metropolitan Boston, MAMassachusetts | $347.36 | — |
| Rest of MassachusettsMassachusetts | $308.54 | — |
| Baltimore area, MDMaryland | $315.39 | — |
| Rest of MarylandMaryland | $297.77 | — |
| Rest of MaineMaine | $271.80 | — |
| Southern Maine, MEMaine | $290.94 | — |
| Detroit, MIMichigan | $287.46 | — |
| Rest of MichiganMichigan | $271.61 | — |
| MinnesotaMinnesota | $300.05 | — |
| Metropolitan Kansas City, MOMissouri | $278.10 | — |
| Metropolitan St. Louis, MOMissouri | $281.68 | — |
| Rest of MissouriMissouri | $257.36 | — |
| MississippiMississippi | $256.30 | — |
| MontanaMontana | $294.59 | — |
| North CarolinaNorth Carolina | $275.35 | — |
| North DakotaNorth Dakota | $292.61 | — |
| NebraskaNebraska | $271.79 | — |
| New HampshireNew Hampshire | $305.22 | — |
| Northern New JerseyNew Jersey | $339.29 | — |
| Rest of New JerseyNew Jersey | $320.57 | — |
| New MexicoNew Mexico | $272.92 | — |
| NevadaNevada | $294.31 | — |
| NYC suburbs and Long Island, NYNew York | $349.75 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $321.86 | — |
| Queens, NYNew York | $346.48 | — |
| Rest of New YorkNew York | $280.14 | — |
| OhioOhio | $271.20 | — |
| OklahomaOklahoma | $265.05 | — |
| Portland, OROregon | $323.98 | — |
| Rest of OregonOregon | $292.53 | — |
| Metropolitan Philadelphia, PAPennsylvania | $306.68 | — |
| Rest of PennsylvaniaPennsylvania | $272.34 | — |
| Puerto RicoPuerto Rico | $297.51 | — |
| Rhode IslandRhode Island | $303.54 | — |
| South CarolinaSouth Carolina | $273.63 | — |
| South DakotaSouth Dakota | $292.38 | — |
| TennesseeTennessee | $268.55 | — |
| Austin, TXTexas | $309.87 | — |
| Beaumont, TXTexas | $270.13 | — |
| Brazoria, TXTexas | $291.61 | — |
| Dallas, TXTexas | $293.24 | — |
| Fort Worth, TXTexas | $290.59 | — |
| Galveston, TXTexas | $292.31 | — |
| Houston, TXTexas | $294.14 | — |
| Rest of TexasTexas | $280.54 | — |
| UtahUtah | $278.10 | — |
| VirginiaVirginia | $289.04 | — |
| Virgin Islands, VIUnited States Virgin Islands | $297.51 | — |
| VermontVermont | $290.25 | — |
| Rest of WashingtonWashington | $308.35 | — |
| King County, WAWashington | $356.20 | — |
| WisconsinWisconsin | $280.98 | — |
| West VirginiaWest Virginia | $260.77 | — |
| WyomingWyoming | $293.73 | — |
78630 rates by state
Office rate range in each state. Select a state to see its payment localities.
Explore a state
Local rates. Clear comparisons.
Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.
$255.02
$366.87
Color shows the midpoint of each state’s locality range.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | $321.62 | 1 |
| AL | $259.49 | 1 |
| AR | $255.02 | 1 |
| AZ | $285.77 | 1 |
| CA | $319.27–$414.46 | 29 |
| CO | $311.36 | 1 |
| CT | $316.47 | 1 |
| DC | $344.08 | 1 |
| DE | $291.14 | 1 |
| FL | $284.43–$310.74 | 3 |
| GA | $266.16–$299.64 | 2 |
| GU | $330.07 | 1 |
| HI | $330.07 | 1 |
| IA | $269.70 | 1 |
| ID | $271.30 | 1 |
| IL | $273.06–$304.60 | 4 |
| IN | $273.23 | 1 |
| KS | $267.09 | 1 |
| KY | $264.43 | 1 |
| LA | $263.50–$279.17 | 2 |
| MA | $308.54–$347.36 | 2 |
| MD | $297.77–$344.08 | 3 |
| ME | $271.80–$290.94 | 2 |
| MI | $271.61–$287.46 | 2 |
| MN | $300.05 | 1 |
| MO | $257.36–$281.68 | 3 |
| MS | $256.30 | 1 |
| MT | $294.59 | 1 |
| NC | $275.35 | 1 |
| ND | $292.61 | 1 |
| NE | $271.79 | 1 |
| NH | $305.22 | 1 |
| NJ | $320.57–$339.29 | 2 |
| NM | $272.92 | 1 |
| NV | $294.31 | 1 |
| NY | $280.14–$349.75 | 5 |
| OH | $271.20 | 1 |
| OK | $265.05 | 1 |
| OR | $292.53–$323.98 | 2 |
| PA | $272.34–$306.68 | 2 |
| PR | $297.51 | 1 |
| RI | $303.54 | 1 |
| SC | $273.63 | 1 |
| SD | $292.38 | 1 |
| TN | $268.55 | 1 |
| TX | $270.13–$309.87 | 8 |
| UT | $278.10 | 1 |
| VA | $289.04–$344.08 | 2 |
| VI | $297.51 | 1 |
| VT | $290.25 | 1 |
| WA | $308.35–$356.20 | 2 |
| WI | $280.98 | 1 |
| WV | $260.77 | 1 |
| WY | $293.73 | 1 |
How the 78630 rate is calculated
Each of 78630’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 · 78630
RVUs × geographic indexes × conversion factor
Work0.66
0.66 RVUs× 1.000 GPCI
Practice expense8.06
8.06 RVUs× 1.000 GPCI
Malpractice0.10
0.10 RVUs× 1.000 GPCI
Adjusted RVUs
8.8200
Conversion factor
$33.4009
Medicare rate
$294.60
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Atlanta, GA inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
9,464
- Code
- 78630
- Physician work
- 0.66
- Practice expense
- 8.06
- Malpractice
- 0.10
GPCI2026.csv
44
- Locality
- Atlanta, GA
- Physician work
- 1.003
- Practice expense
- 1.016
- Malpractice
- 1.201
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.66 | × 1.003 | 0.6620 |
| Practice expense | 8.06 | × 1.016 | 8.1890 |
| Malpractice | 0.10 | × 1.201 | 0.1201 |
| Total RVUs | 8.9710 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Atlanta, GA$299.64
Office: (0.66 × 1.003 + 8.06 × 1.016 + 0.1 × 1.201) × $33.4009 = $299.64
Payment rules and modifiers for 78630
The CMS indicators that decide how 78630 is paid alongside other services.
CMS payment indicators · 78630
CSF scan, cisternography
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 1 | Diagnostic test with separate professional (26) and technical (TC) components. |
What modifiers do to the payment
Modifier 26 · payment effect
With and without the modifier
78630 without 26 · national office
$294.60
CSF scan, cisternography
78630-26 · Professional component
$30.73
Pays only the interpretation and report.
How 78630 has changed in Atlanta, GA
78630 · Office / nonfacility
$299.64
Effective 2026-10-01
The base rate is $7.70 higher than on 2025-10-01, moving from $291.94 to $299.64 (2.6%).
It is unchanged from the immediately preceding available release, effective 2026-07-01.
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
January 1, 2026
RVU26A
$291.94changed to$299.64
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 0.68 changed to 0.66
- Practice expense RVU 8.28 changed to 8.06
- Malpractice RVU 0.08 changed to 0.10
- Work GPCI 1.000 changed to 1.003
- Practice expense GPCI 0.997 changed to 1.016
- Malpractice GPCI 1.128 changed to 1.201
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$306.78changed to$291.94
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 8.46 changed to 8.28
- Malpractice RVU 0.09 changed to 0.08
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$301.78changed to$306.78
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$318.00changed to$301.78
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 8.64 changed to 8.46
- Malpractice RVU 0.08 changed to 0.09
- Practice expense GPCI 0.998 changed to 0.997
- Malpractice GPCI 1.016 changed to 1.128
January 1, 2023
RVU23A
$330.27changed to$318.00
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 8.80 changed to 8.64
- Malpractice RVU 0.09 changed to 0.08
- Malpractice GPCI 0.904 changed to 1.016
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$345.55changed to$330.27
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 9.16 changed to 8.80
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$347.97changed to$345.55
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 8.90 changed to 9.16
- Malpractice RVU 0.08 changed to 0.09
- Malpractice GPCI 0.996 changed to 0.904
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$350.30changed to$347.97
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 8.98 changed to 8.90
- Practice expense GPCI 0.997 changed to 0.998
- Malpractice GPCI 1.088 changed to 0.996
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$356.74changed to$350.30
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 9.17 changed to 8.98
Held through RVU19B, RVU19C, RVU19D.
April 1, 2018
RVU18B
No ratechanged to$356.74
Held through RVU18C, RVU18D.
January 1, 2013
RVU13AR
Earliest loaded release: No rate
Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D, RVU17A, RVU17B, RVU17C, RVU17D, RVU18AR1.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $299.64 | Not available in this setting | RVU26D |
| 2026-07-01 | $299.64 | Not available in this setting | RVU26C |
| 2026-04-01 | $299.64 | Not available in this setting | RVU26B |
| 2026-01-01 | $299.64 | Not available in this setting | RVU26A |
| 2025-10-01 | $291.94 | Not available in this setting | RVU25D |
| 2025-07-01 | $291.94 | Not available in this setting | RVU25C |
| 2025-04-01 | $291.94 | Not available in this setting | RVU25B |
| 2025-01-01 | $291.94 | Not available in this setting | RVU25A |
| 2024-10-01 | $306.78 | Not available in this setting | RVU24D |
| 2024-07-01 | $306.78 | Not available in this setting | RVU24C |
| 2024-04-01 | $306.78 | Not available in this setting | RVU24B |
| 2024-03-09 | $306.78 | Not available in this setting | RVU24AR |
| 2024-01-01 | $301.78 | Not available in this setting | RVU24A |
| 2023-10-01 | $318.00 | Not available in this setting | RVU23D |
| 2023-07-01 | $318.00 | Not available in this setting | RVU23C |
| 2023-04-01 | $318.00 | Not available in this setting | RVU23B |
| 2023-01-01 | $318.00 | Not available in this setting | RVU23A |
| 2022-10-01 | $330.27 | Not available in this setting | RVU22D |
| 2022-07-01 | $330.27 | Not available in this setting | RVU22C |
| 2022-04-01 | $330.27 | Not available in this setting | RVU22B |
| 2022-01-01 | $330.27 | Not available in this setting | RVU22A |
| 2021-10-01 | $345.55 | Not available in this setting | RVU21D |
| 2021-07-01 | $345.55 | Not available in this setting | RVU21C |
| 2021-04-01 | $345.55 | Not available in this setting | RVU21B |
| 2021-01-01 | $345.55 | Not available in this setting | RVU21A |
| 2020-10-01 | $347.97 | Not available in this setting | RVU20D |
| 2020-07-01 | $347.97 | Not available in this setting | RVU20C |
| 2020-04-01 | $347.97 | Not available in this setting | RVU20B |
| 2020-01-01 | $347.97 | Not available in this setting | RVU20A |
| 2019-10-01 | $350.30 | Not available in this setting | RVU19D |
| 2019-07-01 | $350.30 | Not available in this setting | RVU19C |
| 2019-04-01 | $350.30 | Not available in this setting | RVU19B |
| 2019-01-01 | $350.30 | Not available in this setting | RVU19A |
| 2018-10-01 | $356.74 | Not available in this setting | RVU18D |
| 2018-07-01 | $356.74 | Not available in this setting | RVU18C |
| 2018-04-01 | $356.74 | Not available in this setting | RVU18B |
| 2018-01-01 | Rate data unavailable | Not available in this setting | RVU18AR1 |
| 2017-10-01 | Rate data unavailable | Not available in this setting | RVU17D |
| 2017-07-01 | Rate data unavailable | Not available in this setting | RVU17C |
| 2017-04-01 | Rate data unavailable | Not available in this setting | RVU17B |
| 2017-01-01 | Rate data unavailable | Not available in this setting | RVU17A |
| 2016-10-01 | Rate data unavailable | Not available in this setting | RVU16D |
| 2016-07-01 | Rate data unavailable | Not available in this setting | RVU16C |
| 2016-04-01 | Rate data unavailable | Not available in this setting | RVU16B |
| 2016-01-01 | Rate data unavailable | Not available in this setting | RVU16A |
| 2015-10-01 | Rate data unavailable | Not available in this setting | RVU15D |
| 2015-07-01 | Rate data unavailable | Not available in this setting | RVU15C |
| 2015-04-01 | Rate data unavailable | Not available in this setting | RVU15B |
| 2015-01-01 | Rate data unavailable | Not available in this setting | RVU15A |
| 2014-10-01 | Rate data unavailable | Not available in this setting | RVU14D |
| 2014-07-01 | Rate data unavailable | Not available in this setting | RVU14C |
| 2014-04-01 | Rate data unavailable | Not available in this setting | RVU14B |
| 2014-01-01 | Rate data unavailable | Not available in this setting | RVU14A |
| 2013-10-01 | Rate data unavailable | Not available in this setting | RVU13D |
| 2013-07-01 | Rate data unavailable | Not available in this setting | RVU13C |
| 2013-04-01 | Rate data unavailable | Not available in this setting | RVU13B |
| 2013-01-01 | Rate data unavailable | Not available in this setting | RVU13AR |
Where the Atlanta, GA rate applies
Atlanta, GA is a Medicare payment area, not a city. Our Census mapping connects it to 114 cities and communities in Georgia. Some span more than one payment area; confirm with the service ZIP.
- Atlanta
- Acworth
- Alpharetta
- 78630 in Auburn · multiple payment areas
- Austell
- Avondale Estates
- Ball Ground
- Belvedere Park
78630 billing questions
How does 78630 differ from a CSF leak study?
78630 describes a CSF scan assessing tracer movement through CSF spaces. Use 78650 when the imaging service is specifically a CSF leakage study.
When should 78635 be considered instead?
78635 is for CSF ventriculography, a ventricular-focused study. Choose based on the study actually performed and its diagnostic target, not just the fact that both involve CSF.
Can the professional and technical services be billed separately?
Yes. Modifier 26 identifies the professional interpretation, and TC identifies the technical service; billing without either modifier represents the global service.
What documentation supports 78630?
The record should identify the clinical question about CSF circulation, the scan performed, and the interpreting physician’s findings.
Is 78630 the code for evaluating a CSF shunt?
No. 78645 describes CSF shunt evaluation; 78630 reports a scan focused on CSF circulation and distribution.
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
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