CPT code 31570: Vocal fold injection, direct, without optical magnification2026 Medicare rate & RVUs in Montana
Reports direct laryngoscopy with therapeutic injection into one or both vocal folds, such as botulinum toxin treatment for spasmodic dysphonia.
In Montana, Medicare pays $344.32 for 31570 in the office and $196.36 when it’s performed in a hospital or facility.
Check a contract rate as a % of Medicare · 31570 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 31570 covers
An otolaryngologist performs direct laryngoscopy and injects a therapeutic agent into one or both vocal folds. A typical use is botulinum toxin treatment for spasmodic dysphonia. The code describes the direct approach without an operating microscope or telescope, unlike 31571, and is commonly furnished in an operative setting.
Select 31570 when documentation supports direct laryngeal access and therapeutic injection, rather than flexible-scope injection, lesion treatment, or a diagnostic-only examination. Document the indication, target vocal fold or folds, injected agent, approach, and therapeutic purpose. The 0-day global period includes same-day preoperative and postoperative care. When related endoscopies are performed together, endoscopy-family pricing applies. The descriptor covers vocal cord(s), so a bilateral adjustment is inappropriate. Medicare does not pay for an assistant at surgery for this service; co-surgeons and team surgery are not 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 Montana compares for 31570
Across 109 of 109 payment localities, the office rate for 31570 runs from $306.62 in Arkansas to $436.72 in San Benito County, CA. Montana pays $344.32. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Montana · this page$344.32
- Los Angeles, CA · California$379.15+$34.83
- Washington, DC area · District of Columbia$388.78+$44.46
- Miami, FL · Florida$383.15+$38.83
- Chicago, IL · Illinois$372.19+$27.87
- Manhattan, NY · New York$396.34+$52.02
- Alaska · Alaska$411.08+$66.76
Other areas in Montana first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | $310.82 | $181.35 |
| ArkansasArkansas | $306.62 | $179.52 |
| ArizonaArizona | $335.32 | $191.94 |
| Bakersfield, CACalifornia | $357.99 | $195.82 |
| Chico, CACalifornia | $356.28 | $194.11 |
| El Centro, CACalifornia | $356.38 | $194.21 |
| Fresno, CACalifornia | $356.28 | $194.11 |
| Hanford, CACalifornia | $356.28 | $194.11 |
| Madera, CACalifornia | $356.28 | $194.11 |
| Merced, CACalifornia | $356.28 | $194.11 |
| Modesto, CACalifornia | $356.28 | $194.11 |
| Napa, CACalifornia | $405.61 | $210.59 |
| Oxnard, CACalifornia | $376.49 | $201.60 |
| Redding, CACalifornia | $356.28 | $194.11 |
| Rest of CaliforniaCalifornia | $356.28 | $194.11 |
| Riverside, CACalifornia | $362.76 | $200.59 |
| Sacramento, CACalifornia | $371.98 | $199.90 |
| Salinas, CACalifornia | $370.56 | $199.06 |
| San Diego, CACalifornia | $377.90 | $200.94 |
| Marin County, CACalifornia | $426.93 | $218.30 |
| San Francisco, CACalifornia | $426.25 | $217.62 |
| San Benito County, CACalifornia | $436.72 | $223.35 |
| Santa Clara County, CACalifornia | $433.93 | $220.57 |
| San Luis Obispo, CACalifornia | $364.82 | $196.29 |
| Santa Cruz, CACalifornia | $380.43 | $200.65 |
| Santa Maria, CACalifornia | $371.57 | $199.04 |
| Santa Rosa, CACalifornia | $384.14 | $202.44 |
| Stockton, CACalifornia | $356.28 | $194.11 |
| Vallejo, CACalifornia | $404.63 | $209.61 |
| Visalia, CACalifornia | $356.28 | $194.11 |
| Yuba City, CACalifornia | $356.28 | $194.11 |
| ColoradoColorado | $354.20 | $196.76 |
| ConnecticutConnecticut | $366.39 | $207.03 |
| DelawareDelaware | $340.58 | $194.39 |
| Fort Lauderdale, FLFlorida | $363.14 | $213.25 |
| Rest of FloridaFlorida | $345.70 | $204.24 |
| Atlanta, GAGeorgia | $351.95 | $201.61 |
| Rest of GeorgiaGeorgia | $326.75 | $194.76 |
| Hawaii, Guam, HIHawaii | $363.15 | $194.92 |
| IowaIowa | $315.39 | $180.00 |
| IdahoIdaho | $317.90 | $181.77 |
| East St. Louis, ILIllinois | $348.79 | $212.66 |
| Rest of IllinoisIllinois | $338.36 | $203.26 |
| Suburban Chicago, ILIllinois | $366.08 | $214.12 |
| IndianaIndiana | $319.55 | $182.39 |
| KansasKansas | $315.34 | $181.58 |
| KentuckyKentucky | $320.60 | $189.06 |
| New Orleans, LALouisiana | $335.36 | $196.13 |
| Rest of LouisianaLouisiana | $320.67 | $189.72 |
| Metropolitan Boston, MAMassachusetts | $385.86 | $209.19 |
| Rest of MassachusettsMassachusetts | $352.84 | $197.03 |
| Baltimore area, MDMaryland | $365.63 | $206.86 |
| Rest of MarylandMaryland | $346.36 | $196.62 |
| Rest of MaineMaine | $320.89 | $184.76 |
| Southern Maine, MEMaine | $335.18 | $188.55 |
| Detroit, MIMichigan | $351.16 | $208.37 |
| Rest of MichiganMichigan | $329.66 | $194.57 |
| MinnesotaMinnesota | $336.02 | $183.76 |
| Metropolitan Kansas City, MOMissouri | $331.78 | $192.84 |
| Metropolitan St. Louis, MOMissouri | $334.86 | $194.00 |
| Rest of MissouriMissouri | $316.42 | $188.87 |
| MississippiMississippi | $311.51 | $184.11 |
| North CarolinaNorth Carolina | $323.81 | $185.76 |
| North DakotaNorth Dakota | $332.46 | $184.49 |
| NebraskaNebraska | $316.60 | $180.02 |
| New HampshireNew Hampshire | $350.01 | $195.97 |
| Northern New JerseyNew Jersey | $385.44 | $213.80 |
| Rest of New JerseyNew Jersey | $369.61 | $208.04 |
| New MexicoNew Mexico | $331.90 | $196.21 |
| NevadaNevada | $341.22 | $193.10 |
| NYC suburbs and Long Island, NYNew York | $407.14 | $231.21 |
| Poughkeepsie and northern NYC suburbs, NYNew York | $373.10 | $211.08 |
| Queens, NYNew York | $397.43 | $222.53 |
| Rest of New YorkNew York | $328.47 | $187.91 |
| OhioOhio | $327.23 | $192.14 |
| OklahomaOklahoma | $318.63 | $186.50 |
| Portland, OROregon | $363.30 | $198.91 |
| Rest of OregonOregon | $337.62 | $190.24 |
| Metropolitan Philadelphia, PAPennsylvania | $358.64 | $204.61 |
| Rest of PennsylvaniaPennsylvania | $326.96 | $191.13 |
| Puerto RicoPuerto Rico | $346.25 | $196.66 |
| Rhode IslandRhode Island | $351.14 | $198.29 |
| South CarolinaSouth Carolina | $326.25 | $189.53 |
| South DakotaSouth Dakota | $331.06 | $183.09 |
| TennesseeTennessee | $317.00 | $182.50 |
| Austin, TXTexas | $353.86 | $197.31 |
| Beaumont, TXTexas | $325.05 | $190.41 |
| Brazoria, TXTexas | $339.17 | $192.54 |
| Dallas, TXTexas | $341.85 | $194.48 |
| Fort Worth, TXTexas | $340.13 | $194.23 |
| Galveston, TXTexas | $340.53 | $193.60 |
| Houston, TXTexas | $351.51 | $204.58 |
| Rest of TexasTexas | $332.28 | $191.86 |
| UtahUtah | $330.40 | $191.31 |
| VirginiaVirginia | $335.09 | $189.64 |
| Virgin Islands, VIUnited States Virgin Islands | $346.25 | $196.66 |
| VermontVermont | $332.48 | $185.99 |
| Rest of WashingtonWashington | $351.74 | $195.93 |
| King County, WAWashington | $392.09 | $210.53 |
| WisconsinWisconsin | $322.15 | $180.40 |
| West VirginiaWest Virginia | $326.97 | $198.38 |
| WyomingWyoming | $339.15 | $191.19 |
31570 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.
$306.62
$411.08
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 | $411.08 | 1 |
| AL | $310.82 | 1 |
| AR | $306.62 | 1 |
| AZ | $335.32 | 1 |
| CA | $356.28–$436.72 | 29 |
| CO | $354.20 | 1 |
| CT | $366.39 | 1 |
| DC | $388.78 | 1 |
| DE | $340.58 | 1 |
| FL | $345.70–$383.15 | 3 |
| GA | $326.75–$351.95 | 2 |
| GU | $363.15 | 1 |
| HI | $363.15 | 1 |
| IA | $315.39 | 1 |
| ID | $317.90 | 1 |
| IL | $338.36–$372.19 | 4 |
| IN | $319.55 | 1 |
| KS | $315.34 | 1 |
| KY | $320.60 | 1 |
| LA | $320.67–$335.36 | 2 |
| MA | $352.84–$385.86 | 2 |
| MD | $346.36–$388.78 | 3 |
| ME | $320.89–$335.18 | 2 |
| MI | $329.66–$351.16 | 2 |
| MN | $336.02 | 1 |
| MO | $316.42–$334.86 | 3 |
| MS | $311.51 | 1 |
| MT | $344.32 | 1 |
| NC | $323.81 | 1 |
| ND | $332.46 | 1 |
| NE | $316.60 | 1 |
| NH | $350.01 | 1 |
| NJ | $369.61–$385.44 | 2 |
| NM | $331.90 | 1 |
| NV | $341.22 | 1 |
| NY | $328.47–$407.14 | 5 |
| OH | $327.23 | 1 |
| OK | $318.63 | 1 |
| OR | $337.62–$363.30 | 2 |
| PA | $326.96–$358.64 | 2 |
| PR | $346.25 | 1 |
| RI | $351.14 | 1 |
| SC | $326.25 | 1 |
| SD | $331.06 | 1 |
| TN | $317.00 | 1 |
| TX | $325.05–$353.86 | 8 |
| UT | $330.40 | 1 |
| VA | $335.09–$388.78 | 2 |
| VI | $346.25 | 1 |
| VT | $332.48 | 1 |
| WA | $351.74–$392.09 | 2 |
| WI | $322.15 | 1 |
| WV | $326.97 | 1 |
| WY | $339.15 | 1 |
How the 31570 rate is calculated
Each of 31570’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 · 31570
RVUs × geographic indexes × conversion factor
Work3.76
3.76 RVUs× 1.000 GPCI
Practice expense5.95
5.95 RVUs× 1.000 GPCI
Malpractice0.60
0.60 RVUs× 1.000 GPCI
Adjusted RVUs
10.3100
Conversion factor
$33.4009
Medicare rate
$344.36
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Montana inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
3,603
- Code
- 31570
- Physician work
- 3.76
- Practice expense
- 5.95
- Malpractice
- 0.60
GPCI2026.csv
71
- Locality
- Montana
- Physician work
- 1.000
- Practice expense
- 1.000
- Malpractice
- 0.998
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 3.76 | × 1.000 | 3.7600 |
| Practice expense | 5.95 | × 1.000 | 5.9500 |
| Malpractice | 0.60 | × 0.998 | 0.5988 |
| Total RVUs | 10.3088 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Montana$344.32
Office: (3.76 × 1 + 5.95 × 1 + 0.6 × 0.998) × $33.4009 = $344.32
Facility: (3.76 × 1 + 1.52 × 1 + 0.6 × 0.998) × $33.4009 = $196.36
Payment rules and modifiers for 31570
The CMS indicators that decide how 31570 is paid alongside other services.
CMS payment indicators · 31570
Vocal fold injection, direct, without optical magnification
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| Multiple procedures | 3 | Endoscopy family rules apply. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
31570 without 51 · national office
$344.36
Vocal fold injection, direct, without optical magnification
31570-51 · Second procedure: 50%
$172.18
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%).
How 31570 has changed in Montana
31570 · Office / nonfacility
$344.32
Effective 2026-10-01
The base rate is $12.56 higher than on 2025-10-01, moving from $331.76 to $344.32 (3.8%).
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
$331.76changed to$344.32
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 3.86 changed to 3.76
- Practice expense RVU 5.80 changed to 5.95
- Malpractice RVU 0.61 changed to 0.60
- Malpractice GPCI 0.978 changed to 0.998
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$343.75changed to$331.76
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 5.87 changed to 5.80
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$338.14changed to$343.75
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$348.94changed to$338.14
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 5.86 changed to 5.87
- Malpractice RVU 0.59 changed to 0.61
January 1, 2023
RVU23A
$352.85changed to$348.94
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 5.75 changed to 5.86
- Malpractice RVU 0.60 changed to 0.59
- Malpractice GPCI 0.977 changed to 0.978
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$351.26changed to$352.85
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 5.64 changed to 5.75
- Malpractice RVU 0.58 changed to 0.60
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$355.49changed to$351.26
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 5.26 changed to 5.64
- Malpractice RVU 0.56 changed to 0.58
- Malpractice GPCI 1.304 changed to 0.977
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$360.47changed to$355.49
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 5.18 changed to 5.26
- Malpractice RVU 0.59 changed to 0.56
- Malpractice GPCI 1.631 changed to 1.304
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$356.12changed to$360.47
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 5.07 changed to 5.18
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$355.20changed to$356.12
- Conversion factor 35.8887 changed to 35.9996
- Practice expense RVU 5.18 changed to 5.07
- Malpractice RVU 0.60 changed to 0.59
- Malpractice GPCI 1.429 changed to 1.631
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$354.31changed to$355.20
- Conversion factor 35.8043 changed to 35.8887
- Practice expense RVU 5.30 changed to 5.18
- Malpractice GPCI 1.226 changed to 1.429
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$354.67changed to$354.31
- Conversion factor 35.9335 changed to 35.8043
- Practice expense RVU 5.25 changed to 5.30
- Malpractice RVU 0.62 changed to 0.60
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$352.90changed to$354.67
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
$351.57changed to$352.90
- Conversion factor 35.8228 changed to 35.7547
- Practice expense RVU 5.36 changed to 5.25
- Malpractice RVU 0.51 changed to 0.62
- Malpractice GPCI 1.165 changed to 1.226
Held through RVU15B.
January 1, 2014
RVU14A
$352.97changed to$351.57
- Conversion factor 34.0230 changed to 35.8228
- Practice expense RVU 5.93 changed to 5.36
- Malpractice RVU 0.53 changed to 0.51
- Malpractice GPCI 1.103 changed to 1.165
Held through RVU14B, RVU14C, RVU14D.
January 1, 2013
RVU13AR
Earliest loaded release: $352.97
Held through RVU13B, RVU13C, RVU13D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $344.32 | $196.36 | RVU26D |
| 2026-07-01 | $344.32 | $196.36 | RVU26C |
| 2026-04-01 | $344.32 | $196.36 | RVU26B |
| 2026-01-01 | $344.32 | $196.36 | RVU26A |
| 2025-10-01 | $331.76 | $221.79 | RVU25D |
| 2025-07-01 | $331.76 | $221.79 | RVU25C |
| 2025-04-01 | $331.76 | $221.79 | RVU25B |
| 2025-01-01 | $331.76 | $221.79 | RVU25A |
| 2024-10-01 | $343.75 | $226.91 | RVU24D |
| 2024-07-01 | $343.75 | $226.91 | RVU24C |
| 2024-04-01 | $343.75 | $226.91 | RVU24B |
| 2024-03-09 | $343.75 | $226.91 | RVU24AR |
| 2024-01-01 | $338.14 | $223.20 | RVU24A |
| 2023-10-01 | $348.94 | $229.99 | RVU23D |
| 2023-07-01 | $348.94 | $229.99 | RVU23C |
| 2023-04-01 | $348.94 | $229.99 | RVU23B |
| 2023-01-01 | $348.94 | $229.99 | RVU23A |
| 2022-10-01 | $352.85 | $232.08 | RVU22D |
| 2022-07-01 | $352.85 | $232.08 | RVU22C |
| 2022-04-01 | $352.85 | $232.08 | RVU22B |
| 2022-01-01 | $352.85 | $232.08 | RVU22A |
| 2021-10-01 | $351.26 | $230.53 | RVU21D |
| 2021-07-01 | $351.26 | $230.53 | RVU21C |
| 2021-04-01 | $351.26 | $230.53 | RVU21B |
| 2021-01-01 | $351.26 | $230.53 | RVU21A |
| 2020-10-01 | $355.49 | $241.81 | RVU20D |
| 2020-07-01 | $355.49 | $241.81 | RVU20C |
| 2020-04-01 | $355.49 | $241.81 | RVU20B |
| 2020-01-01 | $355.49 | $241.81 | RVU20A |
| 2019-10-01 | $360.47 | $249.83 | RVU19D |
| 2019-07-01 | $360.47 | $249.83 | RVU19C |
| 2019-04-01 | $360.47 | $249.83 | RVU19B |
| 2019-01-01 | $360.47 | $249.83 | RVU19A |
| 2018-10-01 | $356.12 | $249.20 | RVU18D |
| 2018-07-01 | $356.12 | $249.20 | RVU18C |
| 2018-04-01 | $356.12 | $249.20 | RVU18B |
| 2018-01-01 | $356.12 | $249.20 | RVU18AR1 |
| 2017-10-01 | $355.20 | $246.82 | RVU17D |
| 2017-07-01 | $355.20 | $246.82 | RVU17C |
| 2017-04-01 | $355.20 | $246.82 | RVU17B |
| 2017-01-01 | $355.20 | $246.82 | RVU17A |
| 2016-10-01 | $354.31 | $244.03 | RVU16D |
| 2016-07-01 | $354.31 | $244.03 | RVU16C |
| 2016-04-01 | $354.31 | $244.03 | RVU16B |
| 2016-01-01 | $354.31 | $244.03 | RVU16A |
| 2015-10-01 | $354.67 | $245.07 | RVU15D |
| 2015-07-01 | $354.67 | $245.07 | RVU15C |
| 2015-04-01 | $352.90 | $243.85 | RVU15B |
| 2015-01-01 | $352.90 | $243.85 | RVU15A |
| 2014-10-01 | $351.57 | $240.88 | RVU14D |
| 2014-07-01 | $351.57 | $240.88 | RVU14C |
| 2014-04-01 | $351.57 | $240.88 | RVU14B |
| 2014-01-01 | $351.57 | $240.88 | RVU14A |
| 2013-10-01 | $352.97 | $234.91 | RVU13D |
| 2013-07-01 | $352.97 | $234.91 | RVU13C |
| 2013-04-01 | $352.97 | $234.91 | RVU13B |
| 2013-01-01 | $352.97 | $234.91 | RVU13AR |
Where the Montana rate applies
Montana is a Medicare payment area, not a city. Our Census mapping connects it to 497 cities and communities in Montana. Some span more than one payment area; confirm with the service ZIP.
- Absarokee
- Acton
- Alberton
- Alder
- Alzada
- Amsterdam
- Anaconda-Deer Lodge County
- Antelope
31570 billing questions
How does 31570 differ from 31571?
Both describe direct laryngoscopy with therapeutic vocal-fold injection. Use 31571 when the procedure includes an operating microscope or telescope.
When is 31573 or 31574 a better fit?
Those codes describe flexible laryngoscopy with injection. 31573 covers therapeutic injection, including specified unilateral treatment; 31574 is for injection for vocal-fold augmentation.
Can 31570 be reported for injections into both vocal folds?
The descriptor covers injection into vocal cord(s). Do not apply a bilateral adjustment or modifier 50.
Can diagnostic laryngoscopy be billed separately with 31570?
The laryngoscopy used to perform the injection is part of the service. A separate diagnostic laryngoscopy should not represent that same procedural work.
What documentation supports 31570?
Document the therapeutic indication, direct approach, vocal fold target or targets, injected agent, and purpose of the injection.
How does payment work when related endoscopies are performed together?
CMS endoscopy-family pricing applies when related endoscopies are performed together. The service has a 0-day global period, and assistant-at-surgery, co-surgeon, and team-surgery billing are not permitted.
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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