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Section I.C · FY 2027 Official Guidelines

Chapter-Specific Coding Guidelines

In addition to general coding guidelines, there are guidelines for specific diagnoses and/or conditions in the classification. Unless otherwise indicated, these guidelines apply to all health care settings. Please refer to Section II for guidelines on the selection of principal diagnosis.

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and NCHS (public domain). Underlining and italics in the PDF aren't reproduced here. Always consult the official PDF for the authoritative text.