Final answer:
The four types of nonmusical codes used by Medicare to explain claims include HCPCS Level II codes for products and services, ICD-10-CM codes for diagnoses, CPT codes for medical procedures and services, and Modifier codes to specify alterations in services.
Step-by-step explanation:
The four types of nonmusical codes used by Medicare to explain claims are HCPCS Level II codes, ICD-10-CM codes for diagnoses, CPT codes for procedures and services, and Modifier codes.
- HCPCS Level II codes are alphanumeric and primarily used for products, supplies, and services not included in CPT codes, such as durable medical equipment and drugs.
- ICD-10-CM codes provide a system for coding diagnoses and reason for visits in all healthcare settings.
- CPT codes are numbers assigned to every task and service a medical practitioner may provide to a patient including medical, surgical, and diagnostic services.
- Modifier codes are two-digit codes added to CPT codes to indicate that a service or procedure has been altered by some specific circumstance but not changed in its definition or code.