2026 ICD-10-CM Diagnosis Code A75.2Typhus fever due to Rickettsia typhi
ICD-10-CM Codes›A00–B99›A75-A79›A75
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
A75.2 is a billable ICD-10-CM diagnosis code for typhus fever due to Rickettsia typhi. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 867 through 869. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 56 closely related codes. Coders also document this condition as murine typhus. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Parasitic, other specified and unspecified infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Murine typhus
- Typhus group rickettsial disease
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Murine (flea-borne) typhus
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Mooser's A75.2
Disease, diseased See Also: Syndrome;
Maxcy's A75.2
Maxcy's disease A75.2
Mooser-Neill reaction A75.2
Mooser's bodies A75.2
flea-borne A75.2
typhi A75.2
endemic (flea-borne) A75.2
mexicanus SAI A75.2
typhus murinus A75.2
flea-borne A75.2
Mexican A75.2
murine A75.2
rat A75.2
shop (of Malaysia) A75.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Bacterial Infections
Bacteria are tiny organisms (living things) that have only one cell. Under a microscope, they look like balls, rods, or spirals. They can be found almost everywhere on Earth. There are lots of bacteria in and on your body. In fact, your body has about 10 times more bacteria cells than human cells.
The full article covers:
- What are bacteria?
- How do bacterial infections spread?
- What are the treatments for bacterial infections?
- Can bacterial infections be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert A75.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About A75.2Overview
What is the ICD-10 code for typhus fever due to Rickettsia typhi?
The ICD-10-CM code for typhus fever due to Rickettsia typhi is A75.2 (sometimes written as A752). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is A75.2 (Typhus fever) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report typhus fever due to Rickettsia typhi on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does A75.2 group to?
When typhus fever due to Rickettsia typhi is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 868, 869, with relative weights from 0.7297 to 2.0932 depending on complications. Higher weights mean higher Medicare reimbursement.
Is A75.2 a CC or MCC?
CMS lists A75.2 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 56 closely related codes in its exclusion list.
What is the ICD-9 equivalent of A75.2?
Under the General Equivalence Mappings, typhus fever due to Rickettsia typhi converts to ICD-9-CM 081.0 (murine typhus). The mapping is a direct match.
