Complication coding is a hot topic among coding, clinical, and compliance professionals. It’s considered to be one of the more challenging aspects of coding. Physicians are hesitant to document post-operative complications, as they negatively affect their quality scores on sites like Healthgrades.com. Hospitals, however, need to be compensated for the extra resources and care provided when such a condition arises. That is why clinical documentation improvement (CDI) specialists need to work with providers to determine whether a complication is truly a “post-operative complication” or an expected outcome of the procedure or disease process.