A74
Non-billableOther diseases caused by chlamydiae
Other diseases caused by chlamydiae
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Status
Non-billable / Header
Block
A70-A74
Child Codes
3
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- carrier or suspected carrier of infectious disease (Z22.-)
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
- chlamydial pneumonia (J16.0)
Use Additional Code
Additional codes that should follow this code
- code to identify resistance to antimicrobial drugs (Z16.-)
Child Codes (3)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code A74?
ICD-10-CM code A74 represents "Other diseases caused by chlamydiae". It is a non-billable header code — use a more specific child code for billing purposes.
Is A74 a billable code?
No, A74 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under A74.
What chapter is A74 in?
A74 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A74?
A74 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters; sexually transmitted chlamydial diseases (A55-A56); neonatal chlamydial conjunctivitis (P39.1); and 2 more.
What are the subcategories under A74?
A74 has 3 child codes, including: A74.0 (Chlamydial conjunctivitis), A74.8 (Other chlamydial diseases), A74.9 (Chlamydial infection, unspecified).
Are additional codes required with A74?
Yes, when using A74 you should also code: code to identify resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for A74?
A74 is linked to 1 UMLS Concept Unique Identifier: C0348161. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.