Prior to January 1, 2026, hydrophilic coated catheters were billed under standard HCPCS codes (A4351-A4353) without being clearly distinguished from non‑hydrophilic catheters, often leading to documentation and reimbursement confusion. Effective January 1, 2026, Medicare implemented new HCPCS codes to specifically identify hydrophilic coated catheters, both with and without insertion supplies, improving billing accuracy and coverage clarity. Providers should reference Noridian DME guidance for detailed coding, billing, and documentation requirements related to these catheter changes.