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Trastuzumab-dttb (Ontruzant) Injection

Colorado rates for HCPCS Q5112

Injection, trastuzumab-dttb, biosimilar, (Ontruzant), 10 mg

Rates data updated October 2026.

How much does Ontruzant (trastuzumab) cost?

$20.89per 10 mg

Typical negotiated rate. In Colorado, October 2026.

Insurers have agreed to pay about $20.89 for each 10 mg of this drug. The price depends on where it is billed: about $20.89 from a physician practice, and about $33.11 from a hospital or other facility.

Work out the cost of a dose

This drug is priced per 10 mg. Enter the amount given to see what insurers have agreed to pay for it.

mg
In a doctor's office or clinic
$20.89
At a hospital outpatient department
$33.11

The same drug, in the same amount, costs 58% more at a hospital than at a doctor's office.

Drug cost only. Giving the drug, the visit itself and any monitoring are billed on their own codes. We do not publish dosing guidance: use the amount from your own prescription or treatment plan.

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 7 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$20.89$20.89 to $25.12
FacilityA hospital or hospital-owned outpatient department$33.11$26.92 to $38.90

How much rates vary

Facilitymedian $33 · 10th to 90th $23 to $68Professionalmedian $21 · 10th to 90th $21 to $30
$20$50$100facility $33professional $21

Distribution of negotiated rates across all payers (price axis is log-scale). Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$20.89
Median
$60.26
Typical High
$125.89
Aetna
Setting
Professional
Modifier
None
Typical Low
$20.89
Median
$20.89
Typical High
$22.91
Anthem BCBS
Setting
Facility
Modifier
None
Typical Low
$22.91
Median
$34.67
Typical High
$67.61
Anthem BCBS
Setting
Professional
Modifier
None
Typical Low
$20.89
Median
$20.89
Typical High
$20.89
Cigna
Setting
Facility
Modifier
None
Typical Low
$24.55
Median
$29.51
Typical High
$52.48
Cigna
Setting
Professional
Modifier
None
Typical Low
$20.89
Median
$20.89
Typical High
$20.89
Denver HMP
Setting
Facility
Modifier
None
Typical Low
$20.89
Median
$20.89
Typical High
$30.20
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$20.89
Median
$22.91
Typical High
$30.20
Select Health
Setting
Facility
Modifier
None
Typical Low
$20.89
Median
$38.90
Typical High
$43.65
Select Health
Setting
Professional
Modifier
None
Typical Low
$20.89
Median
$20.89
Typical High
$30.20
United
Setting
Facility
Modifier
None
Typical Low
$20.89
Median
$20.89
Typical High
$20.89
United
Setting
Professional
Modifier
None
Typical Low
$29.51
Median
$29.51
Typical High
$31.62
4 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$10.47
Median
$10.47
Typical High
$10.96
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$4.17
Median
$4.17
Typical High
$4.37
Aetna
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$3.16
Median
$3.16
Typical High
$3.31
Aetna
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$2.09
Median
$2.09
Typical High
$2.19

Where Colorado sits

The same service costs 3.8 times more in Wyoming than in Kentucky. 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· 50th of 51

$20.89

WY $79.43KY $20.89

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.