Include Oct.-effective excludes note updates in your diagnosis education

Why This Topic Matters

Excludes note revisions can change how related diagnoses are reviewed and documented in ICD-10-CM workflows. Keeping training aligned with the annual addenda helps teams prepare for code-set updates and maintain accurate diagnosis reporting.

Article Sections

1. Review the Excludes1 notes

   Introduces the purpose of the update and summarizes the broad categories of Excludes note revisions included in the FY2025 tabular addenda. Also frames the chapter-by-chapter review that follows.

2. Chapter 2, Neoplasms (C00-D49)

   Covers update activity affecting neoplasm-related classification and related note changes within the chapter. Focuses on how the addenda touch existing and newly added diagnosis categories.

3. Chapter 3, Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)

   Summarizes blood and immune-mechanism coding updates reflected in the FY2025 addenda. Highlights how the chapter’s tabular notes were revised around closely related conditions.

4. Chapter 5, Mental, behavioral and neurodevelopmental disorders (F01-F99)

   Discusses mental and behavioral health code updates involving newly added and revised diagnosis categories. Includes note changes affecting related developmental and age-related classifications.

5. Chapter 11, Diseases of the digestive system (K00-K95)

   Reviews digestive-system note updates that involve congenital and anorectal-related diagnoses. Emphasizes the scope of the addenda changes within this chapter.

6. Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99)

   Covers musculoskeletal and connective tissue updates related to back pain, discogenic disorders, and linked exclusions. Describes the chapter-level note revisions included in the annual update.

7. Chapter 14, Diseases of the genitourinary system (N00-N99)

   Summarizes genitourinary chapter changes involving urinary and renal-related diagnoses. Notes how the addenda revise relationships among codes in this area.

8. Chapter 16, Certain conditions originating in the perinatal period (P00-P96)

   Highlights perinatal-period updates affecting neonatal endocrine and related conditions. Focuses on the chapter’s newly revised note structure.

9. Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

   Covers symptom and laboratory-finding code updates, including exclusions tied to neurologic and metabolic conditions. Summarizes the broader impact of the chapter’s FY2025 revisions.

10. Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88)

    Reviews injury and poisoning chapter changes, including revisions involving drug-related poisoning categories. Explains the chapter-level scope of the new and converted notes.

11. Excludes1 to Excludes2 conversions

    Summarizes the groups of notes that changed from one exclusion type to another across several code families. Includes updates affecting cardiovascular, diabetes-related, and pneumonia-related classifications.

12. Resources

    Provides references to the official ICD-10-CM addenda and coding guidelines used for the annual update. Serves as the source section for readers seeking the underlying documents.