Hospitals that provide an urgent care service frequently lose revenue due to both incorrect billing and coding practices. A few examples of such mistakes include failing to include modifiers and failing to verify the patient’s insurance before submitting a claim.
Due to the high volume of patients seen in urgent care facilities and the speed at which services must be billed, accurate billing will be even more essential. The excellent news is that many of these mistakes can easily be avoided with the implementation of good systems, sufficient training, and the use of established workflows.
This blog will provide insight into common billing and coding errors that happen at an urgent care facility as well as offer solutions to these issues. It is the hope that clinics will be able to decrease denials, improve cash flow, and ultimately increase the number of clean claims submitted for reimbursement.
Why Urgent Care Billing Errors Are So Common
The fast-paced, ever-changing environment of urgent care centers creates a challenging place for staff to process walk-in patients, check insurances, complete paperwork, and code all at the same time. This also puts staff at an increased risk of making administrative errors.
Urgent care clinics are fundamentally different than other medical practices in that they have a:
- Large number of patients seen in a day
- Minimal time for each patient
- Variety of payers and insurance plans
- Need for completion of documentation at the time service is provided
- Requirement to provide services with the most current coding
All of the above factors increase the risk of making costly mistakes that could impact reimbursement even when working with experienced staff members.
1. Failure to Verify Insurance Eligibility
Before treating patients in your facility, make sure they have valid insurance coverage on file. Failure to do so will often result in rejections of claims after care has been provided. Many facilities wrongly assume that each time a patient returns, their insurance information will be the same. However, this is not always the case as many times over the course of a year, patients can have changes to their insurance.
How to Fix It
The best way to avoid rejections of claims after your facility has treated the patient to verify eligibility for insurance coverage on every patient visit.
1. That insurance is active
2. How the patient is responsible for copays and deductibles 3. Plan benefits and coverage for urgent care
4. Coordination of benefits in the event that there are multiple insurances By obtaining accurate data prior to treating patients will help improve billing and cash flow through your practice by reducing the number of claims denied after treatment because of incorrect patient information.
2. Incorrect Coding (Upcoding or Under-Coding)
Mistakenly coding services is one of the other primary causes of denied claims for urgent care providers. This includes both incorrectly coding (reverse code) and under-coding services.
Incorrectly coding (reverse code) a visit is a key area where health care organizations can incur compliance risks and audits as well as lost revenue from the under-coding or reverse coding of services.
Both circumstances can be detrimental to a practice’s financial stability.
When compared to other areas of medicine, urgency care providers tend to focus on providing treatment versus properly documenting their treatment and are, therefore, frequently using the wrong ICD-10 and CPT code.
How to Fix It
To ensure that documentation accurately reflects the complexity of care or level of service, the best recommendation is to ensure that the documentation supports the proper code being used. To accomplish this, the clinic(s) should do the following:
- Train the provider(s) to document correctly.
- Use the MDM process to document coding.
- Leverage the use of EHR-type prompts to minimize the risk associated with the manual entry process.
- Conduct frequent coding audits to verify that documentation and coding processes align.
When documentation is accurate, billing will reflect the true complexity of care or services rendered.
3. Missing or Incorrect Modifiers
In Medical billing, the small but impactful part of the process is the modifier. Using an incorrect or missing modifier can have a huge impact on the outcome of a claim and whether or not that claim gets paid.
For example, Modifier 25 can be used with an evaluation and management service when the provider’s services were provided on the same date as another procedure.
How to Fix It
To prevent modifiers from causing billing errors:
- Train your billers on frequent modifiers used in an urgent care setting
- Use automated coding for your billing software program to alert billers with modifiers
- Perform periodic chart reviews to confirm modifier usage
- Keep a quick reference guide of modifiers available for billers
Using modifier properly will make sure you are accurately billing for services and are paid in full.
4. Inadequate or Incomplete Documentation
A lack of appropriate documentation can result in lost revenue. If the healthcare provider does not thoroughly document their patient’s visit, the billing department cannot use the documentation to bill at a higher level than they would be able to without it.
Many of the reasons why claims get denied due to medical necessity are due to the lack of appropriate documentation (such as not properly documenting the patient’s symptoms, why a treatment was chosen, or what was discussed at the end of the visit).
How to Fix It
- How to Improve Documentation Quality
- Using structured EHR templates to help with documentation.
- Training healthcare providers on how to document immediately after each patient visit.
- Documenting all procedures, labs, and imaging performed as part of the visit.
- Creating alerts in EHR systems for missing documentation/information.
By providing good documentation, the healthcare provider is better able to code appropriately for their patients and provides themselves protection from an audit.
5. Diagnosis and Procedure Mismatch
A mismatch between diagnosis codes (ICD-10) and procedure codes (CPT) is a common reason for claim rejection. Insurance companies require both codes to support medical necessity.
When the diagnosis does not justify the procedure, claims are often denied automatically.
How to Fix It
To reduce mismatches:
- Ensure coders cross-check ICD-10 and CPT alignment
- Use claim scrubbing tools before submission
- Educate providers on clinical documentation requirements
- Review denied claims for recurring patterns
This alignment ensures claims pass payer validation smoothly.
6. Ignoring Denied Claims
Many urgent care centers make the mistake of not following up on denied claims. Ignoring denials leads to permanent revenue loss because most claims can actually be corrected and resubmitted.
Denial management is often neglected due to workload or lack of structured processes.
How to Fix It
A strong denial management system should include:
- Weekly review of denial reports
- Categorization by denial reason
- Fast reworking of high-value claims
- Root cause analysis to prevent repeat errors
Timely action on denials significantly improves revenue recovery rates.
7. Place of Service (POS) Errors
Using the wrong Place of Service code can result in incorrect reimbursement or claim rejection. Urgent care services typically use POS 20, but some payers require different coding based on contracts.
How to Fix It
- Maintain a payer-specific POS matrix
- Update billing rules regularly
- Audit claims monthly for POS accuracy
- Train staff on payer-specific requirements
Correct POS usage ensures accurate payment calculations.
8. Missing Prior Authorization
Some urgent care procedures require prior authorization. Failure to obtain it results in automatic claim denial, even if the service was medically necessary.
How to Fix It
- Identify services requiring authorization in advance
- Automate authorization tracking systems
- Confirm approval before service delivery
- Document authorization numbers in patient records
This prevents avoidable financial losses.
9. Duplicate Claim Submission
Submitting the same claim multiple times without resolving the original one creates confusion for payers and leads to automatic rejection.
How to Fix It
- Track claim status before resubmission
- Use clearinghouse tracking tools
- Avoid manual duplicate submissions
- Train billing teams on claim lifecycle management
Proper tracking eliminates unnecessary rework.
10. Lack of Staff Training and Process Control
Even with advanced systems, human error remains a major factor in billing mistakes. Many urgent care centers lack ongoing training programs for billing and coding staff.
How to Fix It
- Conduct monthly training sessions
- Keep staff updated on coding changes
- Implement standard operating procedures (SOPs)
- Assign billing compliance officers
Well-trained staff significantly reduce error rates and improve revenue cycle efficiency.
Conclusion
Urgent care billing and coding mistakes directly impact revenue, operational efficiency, and patient satisfaction. Most of these errors are not complex they are process-driven and completely preventable.
By improving insurance verification, documentation, coding accuracy, and denial management, urgent care centers can significantly reduce claim denials and improve cash flow.
A structured billing workflow combined with trained staff and modern automation tools is the key to long-term financial success in urgent care operations.
Frequently Asked Questions (FAQs)
- What is the most common urgent care billing mistake?
The most common mistake is failure to verify insurance eligibility before treatment, leading to claim denials.
- Why do urgent care claims get denied?
Claims are usually denied due to incorrect coding, missing documentation, insurance errors, or lack of prior authorization.
- What is upcoding in medical billing?
Upcoding refers to billing for a higher-level service than what was actually provided, which can lead to audits and penalties.
- How can urgent care centers reduce claim denials?
They can reduce denials by improving eligibility checks, coding accuracy, documentation, and denial management systems.
- What is a modifier in medical billing?
A modifier is a two-digit code used to provide additional information about a medical service or procedure.
- Why is documentation important in billing?
Proper documentation supports medical necessity and ensures accurate coding and reimbursement.
- What is POS in urgent care billing?
POS (Place of Service) indicates where the healthcare service was provided, such as POS 20 for urgent care centers.
- What happens if prior authorization is not obtained?
The claim is usually denied even if the treatment was necessary.
- How often should billing audits be done?
Ideally, billing audits should be conducted monthly or quarterly depending on practice size.
- Can automation reduce billing errors?
Yes, automation reduces manual errors in eligibility checks, coding, claim submission, and denial tracking.
