A18 ICD-10-CA category: Tuberculosis of other organs
A18 isn’t a code on its own. Choose one of the 9 codes beneath it, the one the documentation supports.
Official description
A18Tuberculosis of other organs
ICD-10-CA · Canada
Codes in A18
A18 isn’t a code on its own. Open the code that matches what the note documents.
A18.0Tuberculosis of bones and jointsA18.1Tuberculosis of genitourinary systemA18.2Tuberculous peripheral lymphadenopathyA18.3Tuberculosis of intestines, peritoneum and mesenteric lymph nodesA18.4Tuberculosis of skin and subcutaneous tissueA18.5Tuberculosis of eyeA18.6Tuberculosis of earA18.7Tuberculosis of adrenal glandsA18.8Tuberculosis of other specified organsNotes for A18
As CIHI prints them, with any note A18 takes from the headings above it.
Includes
- Infections due to Mycobacterium tuberculosis and Mycobacterium bovisFrom A15-A19 Tuberculosis
- 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.
- Congenital tuberculosis (P37.0)pneumoconiosis associated with tuberculosis (J65)sequelae of tuberculosis (B90.-)silicotuberculosis (J65)From A15-A19 Tuberculosis
- 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 A18 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block A15-A19Tuberculosis
- 3Category A18Tuberculosis of other organs
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
Is A18 a valid ICD-10-CA code?
No. A18 (Tuberculosis of other organs) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 9 codes; record the one the documentation supports.
Where is A18 in ICD-10-CA?
A18 sits under A15-A19 Tuberculosis, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).
What coding notes apply to A18?
ICD-10-CA lists Includes, Excludes, Use additional code notes for A18, 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.