Retrograde Filling — Per Root (D3428) — National Rates

Negotiated reimbursement rates for D3428 across 43 states, sourced from CMS Transparency in Coverage data. 424 rate records.

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National Average Negotiated Rate
$196
424 rate records · 43 states
📊 Data updated monthly · Last refresh: March 2026

About D3428 — Retrograde Filling — Per Root

D3428 refers to a retrograde filling procedure performed per root. This procedure is typically indicated when there is a need to seal the root canal from the apex due to infection or to enhance the success of an apicoectomy. Documentation should include the rationale for the procedure, any relevant imaging, and post-operative instructions. The average reimbursement for this procedure is approximately $196, but it can differ based on the insurance provider and state regulations. Some payors may require prior authorization or specific documentation to approve reimbursement for retrograde fillings.

Reimbursement rates for D3428 vary significantly by state, payor, and provider network. The national average negotiated rate is $196. Data sourced from CMS Transparency in Coverage machine-readable files, updated monthly.

Top Paying States for D3428

New York
$391
22 records
Nevada
$329
20 records
Connecticut
$282
11 records

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Full National Breakdown

Median
$178
Low
$66
High
$840

Highest & Lowest Reimbursement States

↑ Top 5

StateAvg Rate
New York$391
Nevada$329
Connecticut$282
Washington$261
New Hampshire$253

↓ Bottom 5

StateAvg Rate
Mississippi$103
Tennessee$102
Alabama$102
Arkansas$80
Kansas$72

All States — D3428 Average Rates

New York
$391
Nevada
$329
Connecticut
$282
Washington
$261
New Hampshire
$253
Alaska
$236
Arizona
$231
Delaware
$228
South Carolina
$223
New Jersey
$220
Minnesota
$219
Georgia
$209
Kentucky
$193
California
$188
Florida
$187
Illinois
$186
Louisiana
$185
District of Columbia
$183
Indiana
$182
Utah
$179
Virginia
$177
Rhode Island
$175
Colorado
$172
Massachusetts
$169
North Dakota
$161
Texas
$157
North Carolina
$155
Maryland
$150
Pennsylvania
$149
Wisconsin
$145
Hawaii
$141
Missouri
$120
Ohio
$118
Idaho
$114
Oregon
$113
Nebraska
$110
Oklahoma
$108
Michigan
$103
Mississippi
$103
Tennessee
$102
Alabama
$102
Arkansas
$80
Kansas
$72
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State-by-State Comparison Table

StateAverageMedianMinMaxRecords
New York$391$394$79$65322
Nevada$329$288$178$84020
Connecticut$282$310$156$35111
Washington$261$248$236$3076
New Hampshire$253$231$231$2865
Alaska$236$236$236$2361
Arizona$231$235$151$28612
Delaware$228$228$200$2552
South Carolina$223$178$66$49018
New Jersey$220$212$130$39412
Minnesota$219$218$128$3124
Georgia$209$221$132$23012
Kentucky$193$188$188$2147
California$188$171$79$84071
Florida$187$186$103$27230
Illinois$186$150$92$3706
Louisiana$185$185$185$1851
District of Columbia$183$183$183$1831
Indiana$182$160$146$3709
Utah$179$179$174$1842
Virginia$177$169$157$2347
Rhode Island$175$175$175$1751
Colorado$172$186$77$18613
Massachusetts$169$157$79$2867
North Dakota$161$121$112$2503
Texas$157$179$79$23529
North Carolina$155$140$108$2166
Maryland$150$150$99$2236
Pennsylvania$149$159$90$2155
Wisconsin$145$141$135$1644
Hawaii$141$87$87$2483
Missouri$120$106$81$23515
Ohio$118$104$104$19218
Idaho$114$114$77$1512
Oregon$113$113$113$1131
Nebraska$110$96$78$1805
Oklahoma$108$108$106$1092
Michigan$103$103$103$1031
Mississippi$103$103$103$1031
Tennessee$102$95$95$1397
Alabama$102$99$99$1196
Arkansas$80$79$79$9817
Kansas$72$72$72$722
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