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2012 Texas Medicaid Provider Procedures Manual

Inpatient and Outpatient Hospital Services Handbook : 3. Inpatient Hospital (Medical/Surgical Acute Care Inpatient Facility) : 3.6 Inpatient Utilization Review : 3.6.1 Utilization Review Process : Diagnosis-Related Group Validation
Each medical record is reviewed to validate the elements critical to the DRG assignment. These elements are the client’s age, sex, admission date, discharge date, discharge status, principal diagnosis, secondary diagnoses (complications or co-morbidities), and principal and secondary procedures. Documentation of these critical DRG elements in the medical record is evaluated for the correlation to the information provided on the claim form.
The principal diagnosis is the diagnosis (condition) established after study to be chiefly responsible for causing the admission of the client to the hospital for care. The condition must be treated or evaluated during this admission to the hospital.
The secondary diagnoses are conditions that affect client care in terms of requiring clinical evaluation, therapeutic treatment, diagnostic procedures, extended length of hospital stay, increased nursing care and monitoring, or have clinically significant implications for future health-care needs.
The coding of diagnoses that have clinically significant implications for future health-care needs applies only to newborns and must be identified by the physician. Normal newborn conditions or routine procedures are not to be considered as complications or co-morbidities for DRG assignment.
Refer to:
Subsection 1.8, “Texas Medicaid Limitations and Exclusions,” in Section 1, “Provider Enrollment and Responsibilities” (Vol. 1, General Information).
If the principal diagnosis, secondary diagnoses (complications or co-morbidities), or procedures are not substantiated in the medical record; sequenced correctly; or have been omitted, codes may be deleted, changed, or added. All diagnosis/procedure coding changes potentially resulting in a DRG change are referred to a physician consultant. When it is determined that the diagnoses and procedures are substantiated and sequenced correctly, the information will be entered into the applicable version of the Grouper software for a DRG determination. The CMS-approved DRG software considers each diagnosis and procedure and the combination of all codes and elements to make a determination of the final DRG assignment. When the DRG is reassigned, the payment to the provider is adjusted.

Texas Medicaid & Healthcare Partnership
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