BCBS Study: Hospital AI Coding Tools Drove $2.3B in Inflated Spending
BCBSA's data analytics arm found that AI-enabled clinical documentation and coding tools drove $2.3 billion in increased inpatient and outpatient spending over a three-year period. In one subset of hospitals, AI-generated diagnoses of acute posthemorrhagic anemia surged without a matching rise in treatment — adding $22 million to maternity costs in a single year. Coding intensity contributed ~20% of a 9% per-member cost increase between 2023-2024.