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Ongoing Blood-Thinner Management, Later Months

Colorado rates for HCPCS 99364

This covers the ongoing work involved in managing a patient's warfarin (a blood-thinning medication) for each additional three-month period after the first, in the outpatient setting. It includes reviewing regular blood clotting test results, adjusting the medication dose as needed, giving the patient instructions, and ordering follow-up testing. This reflects the continued coordination needed to keep the blood-thinning level in a safe range over the long term.

Rates data updated October 2026.

How much does Ongoing Blood-Thinner Management, Later Months cost?

$74.13

Typical physician fee. In Colorado, October 2026.

Insurers have agreed to pay about $74.13 for this service. Most negotiated rates run $51.29 to $120.

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 4 insurance carriers under federal price transparency rules.

How much rates vary

Facilitymedian $49 · 10th to 90th $41 to $59Professionalmedian $95 · 10th to 90th $51 to $155
$50$100$200facility $49professional $95

Distribution of negotiated rates across all payers (price axis is log-scale). 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
None
Typical Low
$41.69
Median
$41.69
Typical High
$51.29
Cigna
Setting
Professional
Modifier
None
Typical Low
$69.18
Median
$95.50
Typical High
$131.83
Denver HMP
Setting
Facility
Modifier
None
Typical Low
$40.74
Median
$48.98
Typical High
$58.88
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$154.88
Median
$338.84
Typical High
$346.74

Where Colorado sits

The same service costs 22.4 times more in Hawaii than in South Carolina. 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.

Colorado· 29th of 47

$74.13

HI $676SC $30.20

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.