A77.40 – Ehrlichiosis, unspecified
ICD-10-CM 2027 diagnosis code · Rickettsioses
ICD-10-CM code
A77.40
- Code
A77.40(claims format:A7740)- Description
- Ehrlichiosis, unspecified
- 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
Index terms for A77.40
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 A77.40?
A77.40 is the ICD-10-CM code for ehrlichiosis, unspecified, in the block A75-A79 (Rickettsioses).
Is A77.40 a billable code?
Yes. A77.40 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does A77.40 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.