How does HCC coding differ from fee-for-service (FFS) coding?

How does HCC coding differ from fee-for-service (FFS) coding?

• A. HCC uses ICD-10-CM codes only for risk adjustment, while FFS uses CPT/HCPCS codes, and medical necessity is proven by ICD-10-CM diagnoses.
• B. HCC uses CPT codes for risk adjustment; FFS uses ICD-10-CM codes.
• C. HCC and FFS use identical coding practices.
• D. HCC requires coding to be validated by auditors before submission.

Answer: (A)

HCC coding centers on risk adjustment using ICD-10-CM diagnosis codes to assign a patient’s health conditions into risk categories that predict expected costs. In this system, the diagnoses themselves are the currency for calculating risk scores, not the procedures performed. Fee-for-service coding, in contrast, is about paying for specific services rendered. It relies on CPT/HCPCS codes that describe the procedures, tests, and treatments provided. Diagnoses (ICD-10-CM) help establish medical necessity and provide clinical context, but payment is driven mainly by the service codes. So, the difference is that HCC uses ICD-10-CM dx codes for risk adjustment, while FFS uses CPT/HCPCS codes to bill for services. Auditing happens in both systems, but an upfront requirement for auditors before submission isn’t a universal rule, and the claim that both coding approaches are identical is incorrect.

HCC coding centers on risk adjustment using ICD-10-CM diagnosis codes to assign a patient’s health conditions into risk categories that predict expected costs. In this system, the diagnoses themselves are the currency for calculating risk scores, not the procedures performed.

Fee-for-service coding, in contrast, is about paying for specific services rendered. It relies on CPT/HCPCS codes that describe the procedures, tests, and treatments provided. Diagnoses (ICD-10-CM) help establish medical necessity and provide clinical context, but payment is driven mainly by the service codes.

So, the difference is that HCC uses ICD-10-CM dx codes for risk adjustment, while FFS uses CPT/HCPCS codes to bill for services. Auditing happens in both systems, but an upfront requirement for auditors before submission isn’t a universal rule, and the claim that both coding approaches are identical is incorrect.