A77.41 – Ehrlichiosis chaffeensis [E. chaffeensis]

ICD-10-CM 2027 diagnosis code · Rickettsioses

Billable code

ICD-10-CM code A77.41
Code
A77.41 (claims format: A7741)
Description
Ehrlichiosis chaffeensis [E. chaffeensis]
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
1. Certain infectious and parasitic diseases (A00-B99)
Block
A75-A79 Rickettsioses
Parent codes
A77 › A77.4

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

A77.4 – Ehrlichiosis

Excludes1 (not coded here):
  • anaplasmosis [A. phagocytophilum] (A79.82)
  • rickettsiosis due to Ehrlichia sennetsu (A79.81)

Index terms for A77.41

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in A77.4

Frequently asked questions

What is ICD-10 code A77.41?

A77.41 is the ICD-10-CM code for ehrlichiosis chaffeensis [E. chaffeensis], in the block A75-A79 (Rickettsioses).

Is A77.41 a billable code?

Yes. A77.41 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does A77.41 belong to?

It belongs to category A77 – Spotted fever [tick-borne rickettsioses].

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.