She thought she had insurance coverage. Then a tumor was flagged as a pre-existing condition.

This is part of The Cost of Denial, NBC News’ reporting on insurance in America.

This is part of The Cost of Denial, NBC News’ reporting on insurance in America. If you are dealing with seemingly inappropriate bills or a denial of coverage, care or repairs for health, home or auto, email us at Costofdenial@nbcuni.com.

Lisa Brundridge was recovering well from her surgery to remove a tumor from her spine when she got a notice from her health insurance provider that made her feel sick to her stomach: Her plan had refused to cover the nearly half-million-dollar combined cost of the operation and medical tests leading up to it.

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