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.
Status
Non-billable / Header
Block
A50-A64
Child Codes
6
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)
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)
- human immunodeficiency virus [HIV] disease (B20)
- chlamydial lymphogranuloma (A55)
- conditions classified to A74.-
Use Additional Code
Additional codes that should follow this code
- code to identify resistance to antimicrobial drugs (Z16.-)
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
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code A56?
ICD-10-CM code A56 represents "Other sexually transmitted chlamydial diseases". It 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 you should also code: code to identify 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.
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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.