ICD-10-CM Diagnosis Code (2025)
Official Description for A77.4
Ehrlichiosis
Coding Notes & Guidelines for A77.4
Excludes1: Not Coded Here
- anaplasmosis [A. phagocytophilum] (A79.82)
- rickettsiosis due to Ehrlichia sennetsu (A79.81)
Inclusion Terms
- Ehrlichiosis due to E. ewingii
- Ehrlichiosis due to E. muris euclairensis
Parent Code (Less Specific):
About ICD-10-CM Code A77.4 (Ehrlichiosis)
ICD-10-CM code A77.4 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM A77.4 became effective on October 1, 2024.
This page provides detailed information about A77.4 - Ehrlichiosis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Ehrlichiosis.