Undercoding and Overcoding: Understanding the Impact on Healthcare Providers


Discover the hidden impact of undercoding and overcoding in medical billing. From reduced reimbursement and compromised data analytics to billing fraud and patient harm, understanding the far-reaching implications is essential for ensuring accurate and ethical coding practices.


Medical coding serves as the backbone of accurate documentation, billing, and claims reimbursement. Coding integrity is a focal point for practices seeking to enhance revenue cycle management (RCM). The best opportunity for improvement is usually to identify instances of undercoding or overcoding.

Undercoding or overcoding can significantly impact providers and patients alike. Skimp on coding, and it can affect reimbursement and patient medical records. Upcoding, on the other hand, is misrepresentative at best and fraudulent if done knowingly. Identifying and resolving coding issues must be a top priority.

Implications of undercoding

Undercoding occurs when medical services are inaccurately represented with lower-level codes. It has far-reaching implications for providers and patients. At its core, it means a provider isn’t fully capturing the complexity and severity of a patient's condition or the services provided.

Undercoding can lead to reduced reimbursement for providers, affecting their financial sustainability and ability to deliver high-quality care. It also results in incomplete documentation of patient conditions, which can hinder the accuracy of medical records and future treatment decisions. Legal and compliance issues can arise as well, which puts providers in a precarious position if they’re selected for a claims audit.

Ramifications of overcoding

Overcoding — accidental or otherwise — is the practice of assigning higher-level codes than warranted by a patient's condition or the services provided. Like undercoding, overcoding carries considerable consequences for (and beyond) revenue.

Generally speaking, overcoding leads to overbilling, which generates fraudulent claims. A history of overcoding can invite increased scrutiny from payers and auditors and trigger investigations and sanctions with legal ramifications. Ethical concerns arise due to the distortion of medical necessity, potentially causing harm to patients by misrepresenting their condition.

How to avoid medical coding issues

Minimizing overcoded or undercoded claims requires a multipronged approach combining education, documentation enhancement, and stringent quality-control measures. Robust coding education and training programs are fundamental to ensure coding professionals are well versed in the intricacies of accurate code assignment. Clear and comprehensive medical records allow for precise coding, while charge capture is essential in clarifying the nature of services. Implementing auditing and compliance measures can catch discrepancies early, offering the opportunity for correction before claims submission.

By addressing medical coding issues at their root, healthcare practices can safeguard against the financial, legal, and ethical pitfalls associated with undercoding and overcoding. Through these measures, a culture of accuracy and transparency can be cultivated, resulting in more reliable claims, improved patient care, and enhanced trust.

Behind it all, communication is crucial. Cooperation between medical coders and providers can be the difference between a correctly coded service and the risk of undercoding or overcoding.

Coding efficacy is critical in RCM

The dire consequences of undercoding and overcoding emphasize the need for robust auditing and quality control measures before claims submission. With thorough auditing, healthcare providers can identify coding errors and discrepancies to correct them. Better coding brings about accurate documentation and appropriate reimbursement — as well as reduced liability. Whether these audits and remediations occur in-house or through a third-party partner, they are integral in avoiding the dangers of overcoding and undercoding.

Learn more about how to ensure accurate medical coding with TruBridge.