A56.0 – Chlamydial infection of lower genitourinary tract
ICD-10-CM 2027 diagnosis code · Infections with a predominantly sexual mode of transmission
- Code
A56.0(claims format:A560)- Description
- Chlamydial infection of lower genitourinary tract
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- A50-A64 Infections with a predominantly sexual mode of transmission
- Parent codes
- A56
Billable codes under A56.0
A56.0 is a header code and cannot be used on claims. Choose the most specific code:
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
A56 – Other sexually transmitted chlamydial diseases
- sexually transmitted diseases due to Chlamydia
- trachomatis
Block A50-A64
- human immunodeficiency virus [HIV] disease (B20)
Related codes in A56
- A56.1 – Chlamydial infection of pelviperitoneum and other genitourinary organsHeader
- A56.2 – Chlamydial infection of genitourinary tract, unspecifiedBillable
- A56.3 – Chlamydial infection of anus and rectumBillable
- A56.4 – Chlamydial infection of pharynxBillable
- A56.8 – Sexually transmitted chlamydial infection of other sitesBillable
Frequently asked questions
What is ICD-10 code A56.0?
A56.0 is the ICD-10-CM code for chlamydial infection of lower genitourinary tract, in the block A50-A64 (Infections with a predominantly sexual mode of transmission).
Is A56.0 a billable code?
No. A56.0 is a header code with more specific child codes; report one of the billable codes listed above.
What category does A56.0 belong to?
It belongs to category A56 – Other sexually transmitted chlamydial diseases.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.