B49 ICD-10-CA code: Unspecified mycosis
B49 is the ICD-10-CA code for “Unspecified mycosis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
B49Unspecified mycosis
ICD-10-CA · Canada
Index terms
Entries in CIHI’s alphabetical index that lead to B49. Searching the index by the condition the note names is how coders reach this code.
- Fungemia NEC
- Cough, tea taster's
- Mycosis, mycotic NEC
- Mycelium infection NEC
- Disease, diseased, mycotic
- Fungus, fungous, disease NEC
- Disease, diseased, fungus NEC
- Infection, infected (opportunistic), fungus NEC
- Infection, infected (opportunistic), mycotic NEC
- Infection, infected (opportunistic), mycelium NEC
Notes for B49
As CIHI prints them, with any note B49 takes from the headings above it.
Includes
- Fungaemia 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.
- Hypersensitivity pneumonitis due to organic dust (J67.-)mycosis fungoides (C84.0)From B35-B49 Mycoses
- 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 B49 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block B35-B49Mycoses
- 3Valid code B49Unspecified mycosis
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 B49 mean?
B49 is the ICD-10-CA code for “Unspecified mycosis” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is B49 in ICD-10-CA?
B49 sits under B35-B49 Mycoses, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).
What coding notes apply to B49?
ICD-10-CA lists Includes, Excludes, Use additional code notes for B49, 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.