Regulations & Laws
ICD-10-CM FY2026 Code Updates: What Practices Must Change Now
The FY2026 ICD-10-CM code set took effect October 1, 2025. Here is how to update templates, superbills, and coder workflows to avoid denials.
Why the annual update matters
Every October 1, CMS and CDC release new, revised, and deleted ICD-10-CM codes. Claims submitted with deleted or truncated codes for dates of service after the effective date are rejected, often silently, until A/R ages past 30 days.
Practices that rely on favorites lists in their EHR are most exposed, because those lists rarely update themselves.
A practical update checklist
Export your top 100 diagnosis codes by volume and compare them against the FY2026 addenda.
Update EHR favorites, superbills, and order sets, then retire deleted codes so providers cannot select them.
Brief providers on any new specificity requirements in their specialty, and hold a short coder huddle on documentation expectations.
How Precision helps
Our certified coders audit your code library, update templates, and monitor the first 60 days of claims for code-related rejections so problems are fixed before they cost you revenue.
This article is for general information and is not legal advice. Rules change often — confirm current requirements with CMS, your payers, or counsel.