A75.1 – Recrudescent typhus [Brill's disease]

ICD-10-CM 2027 diagnosis code · Rickettsioses

Billable code

ICD-10-CM code A75.1

Code: A75.1 (claims format: A751)
Description: Recrudescent typhus [Brill's disease]
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: A75

Notes for A75.1

Applicable to:

Brill-Zinsser disease

Notes inherited from parent codes

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

A75 – Typhus fever

Excludes1 (not coded here):

rickettsiosis due to Ehrlichia sennetsu (A79.81)

Index terms for A75.1

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

Related codes in A75

Frequently asked questions

What is ICD-10 code A75.1?

A75.1 is the ICD-10-CM code for recrudescent typhus [Brill's disease], in the block A75-A79 (Rickettsioses).

Is A75.1 a billable code?

Yes. A75.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does A75.1 belong to?

It belongs to category A75 – Typhus fever.

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.