I.B
General Coding Guidelines
This is a section heading — the guidance lives in the subsections below.
In this section
- I.B.1Locating a code in the ICD-10-CM
- I.B.2Level of Detail in Coding
- I.B.3Code or codes from A00.0 through T88.9, Z00-Z99.8, U00-U85
- I.B.4Signs and symptoms
- I.B.5Conditions that are an integral part of a disease process
- I.B.6Conditions that are not an integral part of a disease process
- I.B.7Multiple coding for a single condition
- I.B.8Acute and Chronic Conditions
- I.B.9Combination Code
- I.B.10Sequela (Late Effects)
- I.B.11Impending or Threatened Condition
- I.B.12Reporting Same Diagnosis Code More than Once
- I.B.13Laterality
- I.B.14Documentation by Clinicians Other than the Patient's Provider
- I.B.15Syndromes
- I.B.16Documentation of Complications of Care
- I.B.17Borderline Diagnosis
- I.B.18Use of Sign/Symptom/Unspecified Codes
- I.B.19Coding for Healthcare Encounters in Hurricane Aftermath
- I.B.20Multiple Sites Coding
ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026 (effective October 1, 2025). Published by CMS and NCHS. Reproduced for reference — always verify against the official CMS release.