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Custom Diagnostic Procedure

California rates for HCPCS D0999

A diagnostic service, used to evaluate your teeth, gums, or overall oral health, that doesn't match one of the standard, commonly used diagnostic procedures, so your dentist provides a detailed explanation of exactly what was done. It's used for less typical evaluations that need an individualized approach.

Rates data updated July 2026.

How much does Custom Diagnostic Procedure cost?

$93.33

Typical negotiated rate. In California, July 2026.

Insurers have agreed to pay about $93.33 for this service. Most negotiated rates run $1.00 to $398.

Few insurers publish rates for this combination, so treat this figure as a rough guide.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 3 insurance carriers under federal price transparency rules.

How much rates vary

Facilitymedian $891 · 10th to 90th $891 to $891Professionalmedian $1 · 10th to 90th $1 to $398
$0.1$1$10$100$1Kfacility $891professional $1

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Small sample; interpret with caution. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Anthem BCBS
Setting
Professional
Modifier
Global
Typical Low
$0.02
Median
$1.00
Typical High
$93.33
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$398.11
Median
$398.11
Typical High
$398.11
Lucent Health
Setting
Facility
Modifier
Global
Typical Low
$891.25
Median
$891.25
Typical High
$891.25
Lucent Health
Setting
Professional
Modifier
Global
Typical Low
$281.84
Median
$281.84
Typical High
$281.84

Where California sits

The same service costs 3235936.6 times more in Pennsylvania than in Ohio. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

California· 8th of 28

$93.33

PA $64,565OH $0.02

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.