We are republishing this article from the OIG website that was written for and published by Texas Dental Association (TDA).
As the Texas Health and Human Services Office of Inspector General (OIG) works to prevent fraud, waste and abuse in Texas Medicaid, the following article is intended to assist providers in effective service delivery and compliance with Medicaid policy.
Oral evaluation codes are essential for documenting patient care, but misuse — especially of the limited oral evaluation code — is a growing concern. The OIG has found that pediatric dental providers frequently misapply this code, resulting in inappropriate billing and possible enforcement action.
Texas Health Steps limited oral evaluations
Under the Texas Medicaid Provider Procedures Manual (TMPPM), Texas Health Steps (THSteps) oral evaluations and dental checkups allow for the early diagnosis and treatment of dental problems.
Among these evaluations, the limited oral evaluation (CDT Code D0140) plays a specific role: problem-focused assessments of a specific tooth or area of the mouth for acute dental pain, trauma, swelling, abscess or other urgent concerns requiring immediate diagnostic attention. The provider must indicate documentation of medical necessity on the claim.
According to the TMPPM, D0140 should not replace routine or comprehensive examinations. Instead, it is intended for situations in which the provider must assess an area of concern rapidly to determine appropriate intervention.
Key features of limited oral evaluations
Problem-focused: A limited oral evaluation is used when there is a specific complaint or acute dental problem. Examples include:
- Facial or oral trauma.
- Localized pain or suspected infection.
- Dental injuries resulting from falls, sports or accidents.
The purpose of this evaluation is to identify the source and severity of the dental issue and determine the next steps for treatment. This may require additional diagnostic testing in order to determine the issue.
Not intended for routine or comprehensive use: The TMPPM distinguishes D0140 from comprehensive oral evaluation (D0150), which is for new patients or those with significant changes in health, and periodic oral evaluation (D0120), for routine checkups and ongoing assessment.
TMPPM requirements for limited oral evaluations
The TMPPM outlines several requirements and limitations for using D0140.
- Frequency: D0140 is typically limited to one service per day by the same provider, twice per day for any provider and may be limited annually unless medical necessity is well-documented. This is to ensure that problem-focused codes are not overused in place of routine evaluations.
- Documentation: Documentation supporting medical necessity must be maintained by the provider in the client’s medical record and include:
- The client’s complaint, supporting medical necessity for the examination.
- The specific area of the mouth that was examined or the tooth involved.
- A description of what was done during the visit.
- Supporting documentation.
Common coding errors
It is important for providers to be mindful of how and when they code for limited oral evaluations. Some providers mistakenly use limited oral evaluation codes to expedite appointments or accommodate scheduling gaps. This practice is inconsistent with THSteps policy and may result in claim denials, requests for supporting documentation or potential compliance reviews.
Providers may also fail to justify the necessity of a D0140 evaluation, especially when the symptoms are mild or unclear. Thorough documentation is required to validate the coded service.
The TMPPM restricts certain combinations of evaluation codes on the same date of service. For example, there are combination restrictions placed on D0140 for the following, which cannot be billed on the same date of service for the same provider:
- D0160, which is used for a problem-focused, detailed and extensive oral evaluation.
- D0170, which is used for re-evaluation of a previously existing, problem-focused, non-postoperative condition in a pre-existing patient.
- D0180, which is used for periodontal evaluations where the patient shows symptoms or is at risk of periodontal disease.
Refer to TMPPM, 3.2.3.7, “Diagnostic Services,” effective December 2025, for a full explanation of procedure code limitations for clinical oral evaluations.
Stay informed to protect your practice
Compliance with TMPPM rules and your dental maintenance organization’s policy is essential for program integrity and patient care. Correct code usage prevents improper claims and ensures Medicaid resources are used appropriately.
Staying current with Medicaid billing requirements and promptly addressing errors helps safeguard your organization and maintain compliance. If you identify a mistake, self-disclosure is the best way to resolve issues proactively, avoiding lengthy investigations and costly litigation.
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