The FY 2027 ICD-10-CM update took effect October 1, 2026, for every payer, with no grace period. It added 190 billable codes, made 30 codes nonbillable and revised four titles. Fifteen of those 30 still appear in the code set as category headers, so they are easy to pick from an old favorites list or superbill, and the claim rejects even though the diagnosis has not changed.

Use this tool to find what is still out of date and fix it:

• The 30 codes that stopped working, with replacement guidance for each
• A specialty quick-look for routing new codes to clinicians, coders and template owners
• The documentation the new codes require, such as laterality, site, etiology and intent
• All 190 new codes, listed by chapter
• An implementation checklist and local impact worksheet, with denial tracking at 30, 60 and 90 days

Who should use it: coding and revenue cycle leads, practice administrators, EHR and template owners, and specialty clinical leads.

Download the tool and check your favorites, superbills and claim edits against the full list.