In medical billing, upcoding is defined as the act of submitting a medically rendered code that is of a higher cost or complexity than the medically rendered code. For example, upcoding is charging a Level 5 Evaluation and Management (E/M) visit with a CPT code 99215 when the documentation was only that of a Level 2 visit (CPT 99212).
As per the National Health Care Anti-Fraud Association, upcoding is a fraudulent act. It charges more than Medicare, Medicaid, TRICARE, or personal insurance. It may lead to serious legal and financial dangers to your practice, whether due to accidental or documentation errors.
Is Upcoding Illegal? The Legal Reality for Providers
Yes, it is a federal offense. It violates:
- False Claims Act (31 U.S.C. §§ 3729-3733)
- The Anti-Kickback Statute
- MS billing requirements.
Penalties under the False Claims Act are:
- Treble damages (times 3 the amount of overpayment)
- Civil fines between 13,946 and 27,894 US dollars (2026 inflation-adjusted) per false claim.
- Lack of coverage by Medicare and Medicaid.
- Intentional fraud—criminal prosecution of up to 10 years’ imprisonment per count.
In Fiscal Year 2025, the Department of Justice (DOJ) announced a record-breaking $6.8 billion in False Claims Act settlements and judgments, the largest amount in the history of the statute. Of those recoveries, 83 percent (5.7 billion) were due to healthcare fraud.
The highest number of qui tam suits was 1,297 in FY 2025. Qui tam suits can be filed by former employees, nurses, coders, and even patients, and they receive 15-30 percent of the funds recovered.
Upcoding fraud is not a technical billing error. It is a federal offense that has multimillion-dollar consequences.
Upcoding vs. Downcoding in Medical Billing: Key Differences
Both overcoding and undercoding in medical billing bring about compliance issues in opposite directions.
| Feature | Upcoding | Downcoding |
| Definition | Billing for a higher-level service than provided | Billing for a lower-level service than provided |
| Direction of Error | Inflates claims (overbilling) | Deflates claims (underbilling) |
| Primary Risk | Fraud prosecution, FCA liability, exclusion | Revenue loss, audit triggers, and inaccurate records |
| Common Cause | Intentional fraud or poor documentation habits | Incomplete notes, fear of audits, coding errors |
| Example | Billing CPT 99215 for a 99212-level visit | Billing CPT 99212 for a well-documented 99215-level visit |
| Legal Status | Violation of False Claims Act, Anti-Kickback Statute | Also creates inaccurate medical records; can trigger audits |
| Financial Impact | Higher short-term reimbursement with severe penalties | Immediate revenue loss, long-term cash flow problems |
Downcoding is not “safe” simply because it results in lower reimbursement. The American Medical Association (AMA) considers systematic downcoding a form of fraud and abuse. Providers who habitually downcode to avoid audits often trigger scrutiny because the pattern of below-average coding stands out in payer analytics.
The goal of compliant billing is accurate coding. It should match the code precisely to the documented level of service, no higher and no lower.
How the Government Detects Upcoding Fraud in 2026
Detection of upcoding fraud has become more advanced. This is how it is identified by federal agencies and payers:
- AI-Based Claims Analysis: CMS and the DOJ are now using machine learning (ML) algorithms to analyze millions of claims on the fly. The DOJ 2025 National Healthcare Fraud Takedown was the biggest takedown in U.S. history in terms of the loss intended, involving 324 defendants and 96 licensed medical professionals in 50 federal districts, and the anticipated loss was 14.6 billion.
- No UPCODE Act: In March 2025, Congress reintroduced the No Unreasonable Payments, Coding, or Diagnoses for the Elderly (No UPCODE) Act, a sign of bipartisan legislative interest in the issue of opposing Medicare Advantage upcoding.
- Payer-Level Edits: Bundling edits, frequency edits, and statistical outlier analysis are used by the private payers to identify claims where a provider regularly makes higher-code claims than their colleagues in the specialty.
How to Prevent Upcoding in Your Practice: 6 Compliance Steps
Follow these 6 practical steps to prevent upcoding:
- Document the level of service rendered: Each E/M level has certain components: history, physical examination, and medical decision-making (MDM). The code should be supported by documentation and not after an audit.
- Conduct internal coding audits quarterly: Audit 20 captures on a six-month basis per provider. Compare the documentation by the provider with what has been submitted. Mark any trend in which documentation does not substantiate the level of billing.
- Train providers on 2024 AMA E/M guidelines: Most office visits were no longer counted by time element in the 2021 AMA E/M updates. Level selection is now driven by MDM. Providers who are not aware of these guidelines run the risk of unintentional upcoding.
- Use certified professional coders (CPCs or CCSs): Certified coders of AACP and AHIMA are also certified to use the latest code instructions. The use of unqualified billing staff is recorded as a root cause of violations of upcoding.
- Implement a compliance program: The OIG has provided a guideline that a lack of a formal compliance program is considered an aggravating circumstance in the course of investigations. The minimum requirement is a written compliance plan, a designated compliance officer, and a reporting hotline.
- Self-disclose errors promptly: The DOJ is a proponent of voluntary self-disclosure. Self-reporting organizations, those that cooperate, and those that remediate are given decreased penalties and damage multipliers, which in some cases can be 1.5x rather than 3x.
Protect Your Practice with Expert Medical Billing Services
Billing mistakes are not worth risking your practice, your license, and your revenue. In 2026, partnering with a professional billing company is the most convenient and reliable option for you.
Kansas Medical Billing provides complete coding compliance and audit services for providers located in Kansas and the USA.
Our certified coders check the accuracy of documentation, identify compliance risks, and make clean claims, and you can concentrate on patient care rather than federal investigations.
Frequently Asked Questions
1. What is the difference between upcoding and unbundling?
Upcoding means billing a higher-level service than provided. Unbundling means billing separate parts of a bundled service to increase reimbursement.
2. Can upcoding occur accidentally?
Yes, due to poor documentation, lack of training, or outdated coding knowledge. Still, repeated errors can trigger audits and potential fraud investigations.
3. How does the No UPCODE Act affect providers?
It targets inflated diagnoses in Medicare Advantage, increasing audits, stricter documentation rules, and possible liability for providers submitting inaccurate data.
4. What triggers an OIG or CMS audit for upcoding?
Triggers include frequent high-level codes, outlier billing patterns, sudden increases, modifier misuse, missing diagnoses, and complaints from patients or staff.
5. Does self-disclosing an upcoding error reduce penalties?
Yes. Self-reporting, full cooperation, and corrective action can lower penalties and reduce financial exposure under federal enforcement programs like the False Claims Act.
