I.B.19

Coding for Healthcare Encounters in Hurricane Aftermath

This is a section heading — the guidance lives in the subsections below.

In this section

I.B.19.aUse of External Cause of Morbidity Codes
I.B.19.bSequencing of External Causes of Morbidity Codes
I.B.19.cOther External Causes of Morbidity Code Issues
I.B.19.dUse of Z codes

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.