Which two coding systems are typically used in Medicare billing to classify services and diagnoses?

Which two coding systems are typically used in Medicare billing to classify services and diagnoses?

• A. CPT for procedures, ICD-10-CM for diagnoses.
• B. CPT for diagnoses, ICD-10-CM for services.
• C. CPT for payer requirements, ICD-10-CM for patient demographics.
• D. CPT for billing cycles, ICD-10-CM for privacy.

Answer: (A)

In Medicare billing, the service or procedure performed is described with CPT codes, while the patient’s diagnosed condition is captured with ICD-10-CM codes. This pairing shows what was done (CPT) and why it was done (ICD-10-CM), which supports medical necessity and proper reimbursement. CPT focuses on procedures and services, whereas ICD-10-CM identifies diagnoses that justify those services. Other options mix roles that CPT and ICD-10-CM are not intended for, such as using CPT for diagnoses or using either code set for payer rules, demographics, or privacy.

In Medicare billing, the service or procedure performed is described with CPT codes, while the patient’s diagnosed condition is captured with ICD-10-CM codes. This pairing shows what was done (CPT) and why it was done (ICD-10-CM), which supports medical necessity and proper reimbursement. CPT focuses on procedures and services, whereas ICD-10-CM identifies diagnoses that justify those services. Other options mix roles that CPT and ICD-10-CM are not intended for, such as using CPT for diagnoses or using either code set for payer rules, demographics, or privacy.