AI Medical Coders Discover 55 Percent More Intestinal Blockages, All of Them Billable
Patients who had the blockages reported feeling exactly the same, but in a more expensive category.
CHICAGO — Hospitals that adopted AI documentation tools have recorded a 55 percent increase in partial intestinal blockages among surgical patients since 2023, a medical breakthrough that insurers say has not been accompanied by a single additional treatment, symptom, or patient.
"The model reads the chart very carefully and finds conditions a human coder would have missed," said a spokesperson for one clinical-documentation vendor. "Some of those conditions, admittedly, the patient would also have missed. And the doctor. And the intestine."
An analysis by an insurer trade group estimated that the newly discovered conditions added $942 million in costs between 2023 and 2025, roughly 70 percent of it from secondary diagnoses that nudged ordinary hospital stays into higher reimbursement categories. Acid overload rose 33 percent over the same period, a figure that gastroenterologists called "plausible, given the billing."
Clinicians said the tools had changed the texture of a hospital stay. "I walked in to discharge a gentleman after a routine procedure, and the scribe had him down for four new conditions," said Dr. Beatrix Oyelaran-Quist, a general surgeon in Ohio. "He asked if he was dying. I told him no, he was just premium."
A patient survey conducted by the advocacy group Chart Watch found that 38 percent of recent surgical patients were unaware of at least one diagnosis on their bill, and 12 percent said they had since started "feeling a little blocked, now that you mention it."
Vendors defended the tools as a triumph of thoroughness and noted that their own billing had also become more thorough, with several now charging hospitals per diagnosis found.
At press time, an ambient AI scribe had listened to a routine checkup, recorded the patient saying "I'm fine," and coded it as a moderate-severity complication.