HCPCS Level II Coding Guide for Medical Practices

What Are HCPCS Level II Codes?

HCPCS (Healthcare Common Procedure Coding System) Level II codes are alphanumeric codes (A0000–Z9999) used to bill Medicare, Medicaid, and most commercial payers for services and items not covered by CPT codes — including durable medical equipment, prosthetics, supplies, drugs, and transportation services.

Common HCPCS Code Categories

Common HCPCS Coding Mistakes

• Using expired J codes for injectable drugs (update annually)
• Not specifying quantity correctly (many drug codes are per unit/per mL)
• Billing E codes without verifying DME Medicare eligibility criteria
• Forgetting KX modifier for Medicare DME (documents medical necessity met)

How a Virtual Coder Handles HCPCS

HCPCS coding requires staying current on quarterly CMS updates — new codes are added, old ones deleted, and prices updated multiple times per year. A dedicated virtual coder monitors these updates and applies them immediately to your billing.