Coding basics
ICD-10-CM vs. CPT: Diagnosis and Procedure Coding
Understand the difference between diagnosis and procedure coding, and where to find authoritative guidance.
US MEDICAL CODING / ICD-10-CM
ICD-10-CM resources and official releases.
Explore official release files, the CDC browser, and our educational guides.
OCTOBER 2026 RELEASE
FY2027 ICD-10-CM
CDC identifies the FY2027 window as October 1, 2026–September 30, 2027. Verify subsequent updates at the official source. The full code database is not imported in this preview.
Official CDC files ↗Build your understanding.
Browse all guides ↗Code updates
FY2027 ICD-10-CM Release Dates and Official Files
A practical guide to the FY2027 release window and official source files.
Coding basics
ICD-10-CM Format vs. Validity: Examples and Checklist
Understand what a structure checker can tell you, and what still needs an authoritative reference.
ICD-10-CM
Official Medical Coding Sources: ICD-10-CM and CPT
A compact source guide for US diagnosis coding and CPT learning.
Continue with the official reference
Use the CDC browser to explore the classification and its notes. Confirm the edition before using a result.
Open CDC browser ↗