Price Checker / CPT 88364
How much does Insitu Hybridization (fish) cost?
CPT 88364 · Based on 2026 Medicare rates and hospital-published pricing
A fair cash price for this is roughly $290–$340.
Fair price
$290–$340
What this should cost
With insurance
~$550
Typical out-of-pocket
Overcharged if over
$430
Push back above this
Were you billed for this procedure?
Send us your bill and we'll compare every line item against Medicare rates and your hospital's published prices. Free review, no obligation.
About Insitu Hybridization (fish)
CPT code 88364 refers to insitu hybridization (fish) (billing description: "Insitu hybridization (fish)"). Under the 2026 Medicare Physician Fee Schedule, it is reimbursed at $127 in a facility (hospital or surgery center) and $127 in a doctor's office.
The Medicare rate is the closest thing to an objective "what this work is actually worth." A fair cash price for the uninsured is generally 1.5–3x that rate. Hospital sticker (gross) charges are often far higher — but almost nobody actually pays them.
What to do if you were overcharged
- 1Send us your bill — we'll identify this code and compare it against the rates shown above.
- 2Get a dispute letter — citing the Medicare rate and your hospital's own published pricing data.
- 3We negotiate for you — 25% of savings, no savings = no fee.