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Iodine I-131 Sodium Iodide, Diagnostic, per mcCi

Washington rates for HCPCS A9531

Iodine I-131 sodium iodide, diagnostic, per mcCi (up to 100 mcCi)

Rates data updated October 2026.

How much does Iodine I-131 Sodium Iodide, Diagnostic, per mcCi cost?

$3.72

Typical negotiated rate. In Washington, October 2026.

Insurers have agreed to pay about $3.72 for this service. The price depends on where it is billed: about $3.72 from a physician practice, and about $5.25 from a hospital or other facility.

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 8 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$3.72$3.72 to $9.55
FacilityA hospital or hospital-owned outpatient department$5.25$3.72 to $7.41

How much rates vary

Facilitymedian $5 · 10th to 90th $3 to $9Professionalmedian $4 · 10th to 90th $3 to $38
$2$5$10$20$50facility $5professional $4

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
Aetna
Setting
Facility
Modifier
None
Typical Low
$3.72
Median
$3.72
Typical High
$3.72
Aetna
Setting
Professional
Modifier
None
Typical Low
$3.72
Median
$3.72
Typical High
$4.27
Asuris Northwest Health
Setting
Facility
Modifier
None
Typical Low
$3.24
Median
$3.24
Typical High
$3.89
Asuris Northwest Health
Setting
Professional
Modifier
None
Typical Low
$28.18
Median
$28.18
Typical High
$38.02
Cigna
Setting
Facility
Modifier
None
Typical Low
$3.72
Median
$6.92
Typical High
$7.41
Cigna
Setting
Professional
Modifier
None
Typical Low
$3.72
Median
$3.72
Typical High
$3.72
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$1.26
Median
$7.94
Typical High
$12.02
Molina
Setting
Professional
Modifier
None
Typical Low
$50.12
Median
$64.57
Typical High
$64.57
Pacific Source
Setting
Facility
Modifier
None
Typical Low
$5.13
Median
$7.94
Typical High
$8.71
United
Setting
Professional
Modifier
None
Typical Low
$2.82
Median
$4.17
Typical High
$7.59
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$4.17
Median
$4.17
Typical High
$5.62
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
$1.82
Median
$1.82
Typical High
$2.14
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$0.74
Median
$0.74
Typical High
$0.85
Aetna
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$0.55
Median
$0.55
Typical High
$0.65
Aetna
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$0.37
Median
$0.37
Typical High
$0.42

Where Washington sits

The same service costs 4.6 times more in Ohio than in Hawaii. 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.

Washington· 36th of 51

$3.72

OH $11.48HI $2.51

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.