What are the top 5 denials in medical billing?

Asked by: Elroy Tromp Sr.  |  Last update: June 10, 2026
Score: 4.3/5 (57 votes)

The top 5 medical billing denials, which often cause significant revenue loss, include missing/invalid patient information, duplicate claims, missing or incorrect authorization/referral, services not covered by the insurance plan, and registration/eligibility issues. These issues can usually be prevented by strengthening front-desk data collection and auditing coding accuracy.

What are the most common denials in medical billing?

Top 10 Denials in Medical Billing

  • Missing or Incomplete Patient Information (CO 16) ...
  • Incorrect Patient Eligibility or Coverage (CO 109) ...
  • Duplicate Claims (CO 18) ...
  • Lack of Prior Authorization (CO 197) ...
  • Invalid or Unsupported Diagnosis Code (CO 167) ...
  • Invalid or Unsupported Procedure Code (CO 181) ...
  • Non-Covered Services (PR 96)

What is denial reason 5?

Denial code 5 means that the procedure code or type of bill submitted is not consistent with the place of service where the service was provided. In other words, the code or bill does not match the location where the service was performed.

What are the top medical claim denials?

Here, we discuss the first five most common medical coding and billing mistakes that cause claim denials so you can avoid them in your business:

  • Claim is not specific enough. ...
  • Claim is missing information. ...
  • Claim not filed on time (aka: Timely Filing)

What is the most common rejection in medical billing?

Common Rejection Types

Coding Errors: Employer code references, which include CPT, HCPCS, or ICD-10 codes, may be inaccurate or outdated percentages. Invalid Patient Details: Data entry inaccuracies concerning the patient. Provider-related Rejections: Lack of or wrong information about the provider.

3 Common Denial Codes in Medical Billing

17 related questions found

What is the 4 denial code?

Denial code 4 is used when the procedure code is inconsistent with the modifier that was used. This means that the modifier attached to the procedure code does not match the requirements or guidelines set by the payer.

What are 5 reasons a claim may be denied?

10 Common Reasons Health Insurance Claims Are Denied

  • Lack of Medical Necessity. ...
  • Coverage Deficiency. ...
  • Incorrect or Incomplete Information. ...
  • Pre-Existing Conditions. ...
  • Out-of-Network Providers. ...
  • Failure to Obtain Prior Authorization. ...
  • Policy Exclusions. ...
  • Exceeding Coverage Limit.

What are the three types of denials?

Three Claim Denial Categories: Administrative, Clinical and Policy. Claim denials fall into three categories: administrative, clinical, and policy—most claim denials are due to administrative errors.

What are 5 common CPT codes?

CPT code 99213 is used for low-complexity office visits, while 99214 is used for moderate-complexity office visits.

  • 97110 – Therapeutic Exercises. ...
  • 97112 – Neuromuscular Reeducation. ...
  • 99396 – Physical Checkup. ...
  • 99397 – Preventive Exam for Patient over 65. ...
  • 99386 – Preventive Exam for New Adult Patient.

What is the 80 20 rule in insurance?

The 80/20 Rule generally requires insurance companies to spend at least 80% of the money they take in from premiums on health care costs and quality improvement activities. The other 20% can go to administrative, overhead, and marketing costs. The 80/20 rule is sometimes known as Medical Loss Ratio, or MLR.

What are M codes in medical billing?

Evaluation and management (E/M) coding is the use of CPT® codes from the range 99202-99499 to represent services provided by a physician or other qualified healthcare professional. As the name E/M indicates, these medical codes apply to visits and services that involve evaluating and managing patient health.

What are the four levels of denial?

To summarize, denial of fact says that the offense in question never happened, denial of impact trivializes the consequences of the inappropriate behavior, denial of responsibility attempts to justify or excuse the behavior, and denial of hope shows that the person is unwilling to take active steps to make things ...

What is denial code 77?

Remark code M77 indicates that the claim submitted contains issues with the place of service information. This could mean that the place of service code is missing, incomplete, invalid, or inappropriate for the service or procedure billed.

What are the most common medical billing errors?

If a service or product that you received wasn't covered and you disagree, here are a few errors that may cause the claim denial.

  • MISSING OR INCORRECT PATIENT INFORMATION. ...
  • INCORRECT CODE. ...
  • WRONG OR SWITCHED NUMBER. ...
  • DUPLICATE CHARGE. ...
  • SERVICE NOT RECEIVED. ...
  • UNBUNDLED CHARGES. ...
  • UPCODING. ...
  • INCORRECT BALANCE BILLING.

How do I train staff to avoid denials?

What are the most effective ways to train staff to reduce claim denials?

  1. Identify common denial reasons.
  2. Provide ongoing education and feedback.
  3. Implement quality assurance and audits.
  4. Encourage collaboration and communication.
  5. Leverage technology and automation. ...
  6. Update and revise policies and procedures.

What are the two types of claim denials?

A hard denial is when the insurance refuses to pay the claim because the service is not covered. Even appeals may fail to reverse or correct a hard denial, leading to lost revenue. Soft denial is when an insurance company reviews a claim and rejects payment due to an issue like missing data or lack of documentation.

What are the 6 types of CPT codes?

Category I CPT codes are numeric, and are five digits long. They are divided into six sections: Evaluation and Management, Anesthesia, Surgery, Radiology, Pathology and Laboratory, and Medicine.

Which medical coding is most in demand?

Let's start with the first one which is Home Health Coding. This field is growing fast, and with an aging population and more people choosing care at home, skilled coders are in demand. You'll work with ICD-10,OASIS assessments, and plan of care.

What is an example of a 99215 CPT code?

For CPT 99215, the expected time is 40 minutes or more. Example: If a physician spends 50 minutes with a patient, and 30 of those minutes are spent discussing treatment options, coordinating care with specialists, and providing patient counseling, CPT 99215 can be appropriately billed.

What are the top 10 denials in medical billing?

10 Medical Billing Denial Codes that Affect Your Revenue

  • CO-4 – Missing Modifier. ...
  • CO-11 – Diagnostic Coding Error. ...
  • CO-15 – Missing or Invalid Authorization Number. ...
  • CO-16 – Missing Information. ...
  • CO-18 – Duplicate Claim or Service. ...
  • CO-22 – Coordination of Benefits Error. ...
  • CO-27 – Insurance Coverage Terminated.

What does OA mean on a claim?

OA (Other Adjustments) is used when CO (Contractual Obligation) nor PR (Patient Responsibility apply. This can be used when the claim is paid in full and there is no contractual obligation or patient responsibility on the claim.

What is CO 96 denial?

When a claim is denied with a CO 96 denial code, it means that the patient's insurance policy was inactive or not in effect during the time when the medical services were provided.

What is the 80% rule in insurance?

When it comes to insuring your home, the 80% rule is an important guideline to keep in mind. This rule suggests you should insure your home for at least 80% of its total replacement cost to avoid penalties for being underinsured.

What are the three most common mistakes on a claim that will cause denials?

Here, we discuss the first five most common medical coding and billing mistakes that cause claim denials so you can avoid them in your business:

  • Claim is not specific enough. ...
  • Claim is missing information. ...
  • Claim not filed on time (aka: Timely Filing)

Why would insurance deny a CT scan?

A CT scan can be denied by your insurance company for a variety of reasons. The simplest reason is that you may have filled out a form wrong or left off the necessary information. Your doctor's office could have miscoded the procedure or failed to provide certain information.