ICD-10-CM Coding: Check Out Some of the 2021 Diagnosis Code Updates

Why This Topic Matters

Annual ICD-10-CM updates can affect diagnosis reporting, code selection, and documentation practices across multiple specialties. This overview helps readers identify which topic areas changed and where official guidance may influence coding workflows.

Article Sections

1. Background

   Introduces the annual update cycle and notes that the article highlights selected code and guidance changes for the upcoming effective date.

2. See Updates to the F10-F19 Range

   Summarizes changes within substance-related diagnosis categories and discusses the broader expansion of withdrawal-related coding for several substance classes.

3. Know These Changes on Esophagitis-Related Codes

   Reviews selected gastrointestinal diagnosis additions tied to esophagitis and reflux reporting, along with the reason these updates were made.

4. Add Influenza Coding Changes to Your List

   Covers updates affecting acute upper respiratory infection reporting when influenza is involved and highlights the related official note changes.

5. Get Ready for Headache Code Expansion

   Describes the restructuring of the headache category and the introduction of additional specificity within that part of the code set.

6. Feds Revisit U07.0 Guidelines

   Discusses updated guidance related to vaping-associated conditions, including how the article frames the use of supporting diagnosis information and related manifestations.