
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.
Find a clear starting point for your next question.
Explore medical coding systems, sources, and study guides.


Understand the difference between diagnosis and procedure coding, and where to find authoritative guidance.

A practical guide to the FY2027 release window and official source files.

Why a book purchase or online source does not automatically authorize a public CPT lookup tool.

Build a repeatable study workflow that keeps examples, sources, and uncertainty together.

Understand what a structure checker can tell you, and what still needs an authoritative reference.

A compact source guide for US diagnosis coding and CPT learning.
Try a broader topic or clear your filters.