Explain the concept of 'under coding' in the context of HCCs.

• A. Under coding occurs when qualifying diagnoses that map to HCCs are not documented or reported, leading to lower risk scores and potential revenue loss.
• B. Under coding means coding more diagnoses than present.
• C. Under coding refers to coding outdated ICD codes.
• D. Under coding means coding too many HCCs relative to patient complexity.

Answer: (A)