AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2025 Issue 1; In This Issue
Changes to the ICD-10-CM Official Guidelines for Coding and Reporting
A summary of the modifications to the ICD-10-CM Official Guidelines for Coding and Reporting are included below. Narrative changes appear in bold text. The complete guidelines may be downloaded by visiting: https://ftp.cdc.gov/pub/Health_Statistics/NCHS/Publications/ICD10CM/2025-Update/C. Chapter Specific Coding Guidelines Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99), U07.1, U09.9 g. Coronavirus infections 1) COVID-19 infection (infection due to SARS-COV-2) (a) Code only confirmed cases Code only a confirmed diagnosis of the 2019 novel coronavirus disease (COVID-19) as documented by the provider, or documentation of a positive COVID-19 test result. For a confirmed diagnosis, assign code...
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Article Overview
This page provides a summary of changes to the ICD-10-CM Official Guidelines for Coding and Reporting. It is useful for coding professionals, compliance staff, and clinical documentation teams who need to stay current with annual guideline revisions affecting diagnosis coding in areas such as COVID-19, obesity, pregnancy, and selected Z code categories.
Why This Topic Matters
Guideline updates can change how diagnoses are documented, sequenced, and reported. Staying current helps support consistent ICD-10-CM coding practice and better alignment between documentation and coding workflows.
Article Sections
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Chapter 1: Certain Infectious and Parasitic Diseases
This section covers guideline updates within the infectious disease chapter, including coronavirus-related guidance and related status coding topics.
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Coronavirus infections
This subsection addresses COVID-19-related guideline updates, including confirmation, testing, and vaccination status topics.
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Chapter 4: Endocrine, Nutritional, and Metabolic Diseases
This section summarizes obesity-related guideline changes within the endocrine and metabolic diseases chapter.
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Obesity
This subsection discusses obesity coding guidance and the handling of obesity class documentation within the classification.
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Chapter 15: Pregnancy, Childbirth, and the Puerperium
This section covers pregnancy-related updates connected to COVID-19 infection during pregnancy, childbirth, and the puerperium.
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Chapter 21: Factors influencing health status and contact with health services
This section addresses selected updates to Z code categories, including newborn and infant-related guidance and other category organization topics.
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Categories of Z Codes
This subsection outlines changes affecting groupings of Z codes and highlights the areas of newborn, routine, administrative, miscellaneous, nonspecific, and principal diagnosis use.
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Newborns and Infants
This subsection identifies newborn and infant Z code categories referenced in the guideline update and points readers to related perinatal guidance.
What You Will Learn
- Which broad ICD-10-CM chapters and categories were updated
- What areas of COVID-19 guidance are addressed
- How the article frames obesity-related guideline changes
- What pregnancy-related COVID-19 guidance is summarized
- Which Z code groupings are referenced for newborns and infants
Who Should Read This
- Medical coders
- Coding auditors
- Compliance professionals
- Clinical documentation specialists
- Revenue cycle teams
Codes Discussed
Code Ranges Discussed
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