Guide to ICD-10 Coding for Prediabetes: Codes, Billing & Documentation

Accurate coding of prediabetes ensures proper reimbursement, compliance, and early intervention. This guide covers the ICD-10 code R73.03 (Prediabetes), related abnormal glucose codes, and essential billing guidelines. Learn which CPT/HCPCS codes to pair (e.g. glucose tests, HbA1c, preventive counseling), when to apply modifiers like –25, and how to document labs, risk factors, and follow-up care to minimize denials. We also highlight common coding errors to avoid, specialties involved (primary care, endocrinology, nutrition), and best practices for revenue cycle management. Whether you're a coder, biller, or provider, these insights will help streamline claims, improve accuracy, and support quality patient care.