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Opening The Wall Between Upper Heart Chambers

Michigan rates for HCPCS 33735

Creates or enlarges an opening in the wall dividing the two upper chambers of the heart, so oxygen-rich and oxygen-poor blood can mix. It is done in infants with heart defects whose circulation depends on that mixing to keep enough oxygen reaching the body. In this version the surgeon works on the beating heart without putting the child on a heart-lung machine.

Rates data updated October 2026.

How much does Opening The Wall Between Upper Heart Chambers cost?

$1,820

Typical negotiated rate. In Michigan, October 2026.

Insurers have agreed to pay about $1,820 for this service. The price depends on where it is billed: about $1,820 from a physician practice, and about $4,898 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 6 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$1,820$1,585 to $1,905
FacilityA hospital or hospital-owned outpatient department$4,898$1,023 to $5,370

How much rates vary

Facilitymedian $4,898 · 10th to 90th $490 to $7,586Professionalmedian $1,820 · 10th to 90th $1,230 to $2,089
$500$1K$2K$5K$10Kfacility $4,898professional $1,820

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
$1,819.70
Median
$1,862.09
Typical High
$4,897.79
Aetna
Setting
Professional
Modifier
None
Typical Low
$1,445.44
Median
$1,862.09
Typical High
$1,905.46
BCBS Michigan
Setting
Facility
Modifier
None
Typical Low
$4,897.79
Median
$4,897.79
Typical High
$8,511.38
BCBS Michigan
Setting
Professional
Modifier
None
Typical Low
$1,148.15
Median
$1,905.46
Typical High
$1,905.46
Cigna
Setting
Professional
Modifier
None
Typical Low
$1,000.00
Median
$1,737.80
Typical High
$2,137.96
Health Alliance Plan
Setting
Facility
Modifier
None
Typical Low
$1,513.56
Median
$3,801.89
Typical High
$4,897.79
Health Alliance Plan
Setting
Professional
Modifier
None
Typical Low
$1,412.54
Median
$1,737.80
Typical High
$2,137.96
Priority Health
Setting
Professional
Modifier
None
Typical Low
$954.99
Median
$1,288.25
Typical High
$2,137.96
United
Setting
Facility
Modifier
None
Typical Low
$426.58
Median
$549.54
Typical High
$3,311.31
United
Setting
Professional
Modifier
None
Typical Low
$1,548.82
Median
$1,905.46
Typical High
$2,290.87
12 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
$724.44
Median
$933.25
Typical High
$954.99
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$288.40
Median
$371.54
Typical High
$380.19
Aetna
Setting
Professional
Modifier
54 · Surgery only
Typical Low
$1,096.48
Median
$1,380.38
Typical High
$1,445.44
Aetna
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$218.78
Median
$275.42
Typical High
$288.40
Aetna
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$144.54
Median
$186.21
Typical High
$190.55
Aetna
Setting
Professional
Modifier
78 · Unplanned return to OR
Typical Low
$1,023.29
Median
$1,288.25
Typical High
$1,348.96
Health Alliance Plan
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$870.96
Median
$891.25
Typical High
$891.25
Health Alliance Plan
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$346.74
Median
$354.81
Typical High
$354.81
Health Alliance Plan
Setting
Professional
Modifier
54 · Surgery only
Typical Low
$1,288.25
Median
$1,348.96
Typical High
$1,348.96
Health Alliance Plan
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$257.04
Median
$269.15
Typical High
$269.15
Health Alliance Plan
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$173.78
Median
$177.83
Typical High
$177.83
Health Alliance Plan
Setting
Professional
Modifier
78 · Unplanned return to OR
Typical Low
$1,202.26
Median
$1,258.93
Typical High
$1,258.93

Where Michigan sits

The same service costs 4.9 times more in Alaska than in Texas. 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.

Michigan· 25th of 51

$1,820

AK $5,248TX $1,072

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.