Which of the following is required for a valid HCC code according to the guidelines?

• A. Correct patient
• B. DOS within data collection period
• C. Acceptable provider type
• D. All of the above

Answer: (D)

For a diagnosis code to count toward HCC risk adjustment, three things must align: the diagnosis must be linked to the correct patient, the date of service must fall within the data collection period, and the documentation must come from an acceptable provider type.

Connecting the diagnosis to the right patient matters because risk scores reflect that patient’s health status; misattributing a condition to someone else or to an anonymous record would distort the risk calculation. The date of service within the data collection period ensures the information is relevant for the current reporting window and prevents using out-of-window care to influence the score. Using an acceptable provider type is crucial because only certain clinicians are authorized to document diagnoses for risk-adjustment purposes; this ensures the source is credible and eligible to contribute to the risk score. When all these conditions are met, the HCC code is considered valid, which is why the correct choice encompasses all of the above.