2026 Code Updates:
288 New CPT Codes and 614 New ICD-10 Codes
Billing with a deleted code in 2026 means a guaranteed denial. Here is what changed and how to audit your charge master before the payer finds the error for you.
The Short Version
Every year, thousands of medical codes change. In 2026, there are 288 new CPT codes, approximately 370 CPT deletions, 614 new ICD-10-CM codes, 160 ICD-10 deletions, and 140 revised ICD-10 codes. If you are billing with last year's code list, you are billing with invalid codes.
This guide covers the effective dates, the audit process for your charge master, and how to use the icd10free code browser and extension to stay current year-round. A 30-minute audit in September (for ICD-10) and December (for CPT) is all it takes to prevent thousands of dollars in automated denials.
288
New CPT Codes (Jan 1)
614
New ICD-10 Codes (Oct 1)
370
CPT Deletions
30 min
Audit Time Recommended
Why Code Updates Matter
I once watched a $50,000 denial happen because a practice missed one code deletion. A vascular surgeon had been billing a repair code that was deleted in January. The practice did not update their charge master. Every claim from January through March — 47 claims total — was auto-denied because the code was not valid for the date of service. The fix was updating one row in the charge master. The cost was three months of denials, six weeks of reprocessing, and an irritated surgeon who had not been paid for a quarter of his case volume.
Code updates are not optional. When CMS or the AMA deletes a code, that code legally does not exist for dates of service on or after the effective date. It does not matter if the procedure is the same. It does not matter if the payer accepted the code last month. The new code set is the law of medical billing for the current year.
The good news: the annual code update cycle is predictable. ICD-10 updates on October 1 every year. CPT updates on January 1 every year. The lists of new, revised, and deleted codes are published months in advance. There is no excuse for being caught off guard — only a failure to audit before the effective date.
How to Audit Your Codes for 2026
Know the Effective Dates
ICD-10 updates take effect October 1 of each year for the federal fiscal year. CPT updates take effect January 1 of each calendar year. Both dates are non-negotiable — billing a deleted code on October 2 or January 2 means an automatic denial. Mark both dates on your calendar and build a review cycle around them: September for ICD-10, December for CPT.
Audit Your Charge Master Against Deleted Codes
Every year, CMS deletes codes that are no longer clinically relevant. Billing a deleted code is a guaranteed denial — the code is not valid on the date of service. Use the icd10free code browser to search your charge master codes and verify they are still active for the current year. Pay special attention to codes that were replaced by combination codes or broken into more specific codes.
Review New and Revised Codes for Your Specialty
Not all 288 new CPT codes or 614 new ICD-10 codes apply to your practice. Focus on the codes relevant to your specialty. The ICD-10 chapter structure makes this easier — you can browse by chapter in the code browser. For CPT, the code browser lets you search by category and keyword. Build a list of new codes that apply to your practice and bookmark them for easy reference.
Bookmark New Codes With a 'Watch List' Folder
Create a folder in the extension called '2026 — New Codes' and save every new or revised code that applies to your specialty. Over the course of the year, this folder becomes your living reference. When you encounter one of these codes in a chart, you already know it's new, you know what it replaced, and you can verify the payment data instantly in the side panel.
Real Code Update Scenarios
Tips from the Trenches
Three things I have learned about staying current with code changes.
Do a 'September Sweep' and 'December Sweep' Every Year
I tell every practice I consult with: schedule two 30-minute blocks per year. September 15: audit your ICD-10 codes against the October 1 changes. December 15: audit your CPT codes against the January 1 changes. Use the icd10free code browser to search every code in your charge master and superbill. Flag any code that shows as 'deleted' or 'revised.' The alternative — finding out from a denial in January — is far more expensive.
Focus on New Combination Codes — They Prevent Denials
The most valuable updates each year are the new combination codes that let you capture a condition and its manifestation in a single code. For example, a new combination code for diabetes with CKD stage eliminates the need for two separate codes and removes the risk of an Excludes1 conflict. When you review the new codes, prioritize the combination codes. They simplify claims and reduce denial risk.
Use the Extension Year-Round, Not Just for Updates
The code browser on icd10free.com is updated with the latest code data year-round. When you search a code in the side panel, you are always seeing the current code status — active, deleted, or revised. If a code was deleted in January, the search result will show it. The extension does not replace your annual audit, but it catches the edge cases — the code you use once a quarter that changed without you noticing.
Frequently Asked Questions
What providers and coders ask about the annual code update cycle.
Ready to Verify Your Codes?
Use the icd10free code browser to check whether your codes are active for 2026. Free, no account required.