A70-A74 ICD-10-CA block: Other diseases caused by chlamydiae
A70-A74 isn’t a code on its own. Choose one of the 7 codes beneath it, the one the documentation supports.
Official description
A70-A74Other diseases caused by chlamydiae (A70-A74)
ICD-10-CA · Canada
Codes in A70-A74
A70-A74 isn’t a code on its own. Open the group that matches what the note documents.
Notes for A70-A74
As CIHI prints them, with any note A70-A74 takes from the headings above it.
Includes
- 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 A70-A74 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block A70-A74Other diseases caused by chlamydiae
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 A70-A74 a valid ICD-10-CA code?
No. A70-A74 (Other diseases caused by chlamydiae) is a block heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 7 codes; record the one the documentation supports.
Where is A70-A74 in ICD-10-CA?
A70-A74 sits under Chapter 1: Certain infectious and parasitic diseases (A00-B99).
What coding notes apply to A70-A74?
ICD-10-CA lists Includes, Use additional code, Excludes notes for A70-A74, 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.
Codes beside A70-A74
A00-A09Intestinal infectious diseasesA15-A19TuberculosisA20-A28Certain zoonotic bacterial diseasesA30-A49Other bacterial diseasesA50-A64Infections with a predominantly sexual mode of transmissionA65-A69Other spirochaetal diseasesA75-A79RickettsiosesA80-A89Viral infections of the central nervous systemA92-A99Arthropod-borne viral fevers and viral haemorrhagic feversB00-B09Viral infections characterized by skin and mucous membrane lesionsB15-B19Viral hepatitisB24-B24Human immunodeficiency virus [HIV] disease (B24)B25-B34Other viral diseasesB35-B49MycosesB50-B64Protozoal diseasesB65-B83HelminthiasesB85-B89Pediculosis, acariasis and other infestationsB90-B94Sequelae of infectious and parasitic diseasesB95-B98Bacterial, viral and other infectious agentsB99-B99Other infectious diseases (B99)