A79.9 ICD-10-CA code: Rickettsiosis, unspecified
A79.9 is the ICD-10-CA code for “Rickettsiosis, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
A79.9Rickettsiosis, unspecified
Short description: Rickettsiosis unspecified
ICD-10-CA · Canada · Also written A799
Index terms
Entries in CIHI’s alphabetical index that lead to A79.9. Searching the index by the condition the note names is how coders reach this code.
- Rickettsiosis NEC
- Rickettsial disease NEC
- Disease, diseased, rickettsial NEC
- Infection, infected (opportunistic), rickettsial NEC
Notes for A79.9
As CIHI prints them, with any note A79.9 takes from the headings above it.
Includes
- Rickettsial infection NOS
- Diseases generally recognized as communicable or transmissibleFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Use additional code
Add a code for this detail when the note documents it.
- Use additional code (U82-U84) to identify resistance to antimicrobial drugsFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Excludes
Conditions classified elsewhere.
- Carrier or suspected carrier of infectious disease (Z22.-)certain localized infections - see body system-related chaptersinfectious and parasitic diseases:• complicating pregnancy, childbirth and the puerperium [except obstetrical tetanus] (O98.-)• specific to the perinatal period [except tetanus neonatorum, whooping cough, congenital syphilis, perinatal gonococcal infection and perinatal human immunodeficiency virus [HIV] disease] (P35-P39)influenza and other acute respiratory infections (J00-J22)From Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Where A79.9 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block A75-A79Rickettsioses
- 3Category A79Other rickettsioses
- 4Valid code A79.9Rickettsiosis, unspecified
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code A79.9 mean?
A79.9 is the ICD-10-CA code for “Rickettsiosis, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is A79.9 in ICD-10-CA?
A79.9 sits under A79 Other rickettsioses, within A75-A79 Rickettsioses, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).
What coding notes apply to A79.9?
ICD-10-CA lists Includes, Use additional code, Excludes notes for A79.9, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.