A56
Non-billableOther sexually transmitted chlamydial diseases
Other sexually transmitted chlamydial diseases
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
- sexually transmitted diseases due to Chlamydia
- trachomatis
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- certain localized infections - see body system-related chapters
- •nonspecific and nongonococcal urethritisN34.1
- •Reiter's diseaseM02.3
- •neonatal chlamydial conjunctivitisP39.1
- •neonatal chlamydial pneumoniaP23.1
Excludes 2
Conditions not included here, but the patient may have both
- •carrier or suspected carrier of infectious diseaseZ22
- •infectious and parasitic diseases complicating pregnancy, childbirth and the puerperiumO98
- •infectious and parasitic diseases specific to the perinatal periodP35-P39
- •influenza and other acute respiratory infectionsJ00-J22
- •human immunodeficiency virus [HIV] diseaseB20
- •chlamydial lymphogranulomaA55
- •conditions classified toA74
Use Additional Code
Additional codes that should follow this code
Child Codes (6)
A56.0Chlamydial infection of lower genitourinary tract
A56.1Chlamydial infection of pelviperitoneum and oth GU organs
A56.2Chlamydial infection of genitourinary tract, unspecified
A56.3Chlamydial infection of anus and rectum
A56.4Chlamydial infection of pharynx
A56.8Sexually transmitted chlamydial infection of other sites
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(3)
Frequently Asked Questions
What is the ICD-10 code for other sexually transmitted chlamydial diseases?
The ICD-10-CM code for other sexually transmitted chlamydial diseases is A56. The full clinical description is "Other sexually transmitted chlamydial diseases". A56 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code A56 mean?
ICD-10-CM code A56 represents “Other sexually transmitted chlamydial diseases”. It is classified under Chapter 1: Certain Infectious and Parasitic Diseases and is a non-billable header code. Use a more specific child code for billing purposes.
Is A56 a billable code?
No, A56 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under A56.
What chapter is A56 in?
A56 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A56?
A56 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters; nonspecific and nongonococcal urethritis (N34.1); Reiter's disease (M02.3-); and 2 more.
What are the subcategories under A56?
A56 has 6 child codes, including: A56.0 (Chlamydial infection of lower genitourinary tract), A56.1 (Chlamydial infection of pelviperitoneum and oth GU organs), A56.2 (Chlamydial infection of genitourinary tract, unspecified), A56.3 (Chlamydial infection of anus and rectum), and 2 more.
Are additional codes required with A56?
Yes, when using A56, also report: resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for A56?
A56 is linked to 3 UMLS Concept Unique Identifiers: C0494059, C4290045, C4290046. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does A56 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other sexually transmitted chlamydial diseases affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of A56?
A56 maps to the ICD-11 code: 1A81.Z (Non-ulcerative sexually transmitted chlamydial infection of unspecified site).
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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.