Colonoscopy, diagnostic at Grand Lake Health System. CPT 45378.
What Grand Lake Health System publishes for this service, straight from its standard-charges file, last updated April 1, 2026.
Outpatient / ER
—cash price (self-pay)
—list price
$922–$1,503range insurers pay
| Insurance plan | Negotiated rate |
|---|---|
| Humana | Medicare Mgd Care | $945 |
| Caresource Advantage | Medicare Mgd Care | $950 |
| Medical Mutual Advantage | Medicare Mgd Care | $959 |
| Aetna | Medicare Mgd Care | $968 |
| Medical Mutual Of Ohio | All Commercial | $1,106 |
| Caresource Marketplace | All Commercial | $1,212 |
Billed more than this?
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