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Making an Opening in the Iris to Let Light In

Maryland rates for HCPCS 66635

Removes a small piece of the iris, the colored ring of the eye, through an incision at the edge of the cornea, creating a clear window for light to reach the back of the eye. It is used when the usual path through the pupil is blocked, for example by scarring or clouding in the center, so that light can enter around the obstruction. The new opening works as a second pupil.

Rates data updated October 2026.

How much does Making an Opening in the Iris to Let Light In cost?

$589

Typical physician fee. In Maryland, October 2026.

Insurers have agreed to pay about $589 for this service. Most negotiated rates run $537 to $794.

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 6 insurance carriers under federal price transparency rules.

How much rates vary

Facilitymedian $1,318 · 10th to 90th $525 to $2,570Professionalmedian $550 · 10th to 90th $457 to $724
$500$1K$2Kfacility $1,318professional $550

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
Professional
Modifier
None
Typical Low
$676.08
Median
$676.08
Typical High
$724.44
CareFirst
Setting
Professional
Modifier
None
Typical Low
$537.03
Median
$588.84
Typical High
$588.84
Cigna
Setting
Facility
Modifier
None
Typical Low
$512.86
Median
$1,288.25
Typical High
$2,290.87
Cigna
Setting
Professional
Modifier
None
Typical Low
$512.86
Median
$524.81
Typical High
$691.83
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$512.86
Median
$562.34
Typical High
$794.33
United
Setting
Facility
Modifier
None
Typical Low
$758.58
Median
$1,380.38
Typical High
$2,570.40
United
Setting
Professional
Modifier
None
Typical Low
$398.11
Median
$501.19
Typical High
$1,122.02
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$457.09
Median
$457.09
Typical High
$794.33
6 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
$338.84
Median
$338.84
Typical High
$363.08
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$134.90
Median
$134.90
Typical High
$144.54
Aetna
Setting
Professional
Modifier
54 · Surgery only
Typical Low
$512.86
Median
$512.86
Typical High
$549.54
Aetna
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$102.33
Median
$102.33
Typical High
$109.65
Aetna
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$67.61
Median
$67.61
Typical High
$72.44
Aetna
Setting
Professional
Modifier
78 · Unplanned return to OR
Typical Low
$478.63
Median
$478.63
Typical High
$512.86

Where Maryland sits

The same service costs 7.6 times more in Wyoming than in Utah. 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.

Maryland· 43rd of 51

$589

WY $2,512UT $331

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.