Billable / Specific Code
ICD-10-CM A56.3 is the diagnosis code for Chlamydial infection of anus and rectum. This code falls under the section "Infections with a predominantly sexual mode of transmission" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where A56.3 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, A56.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
A56.3 is the ICD-10-CM diagnosis code for "Chlamydial infection of anus and rectum". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of A56.3 is A56 ("Other sexually transmitted chlamydial diseases"). A56.3 provides a more specific classification within this category.
A56.3 is located in Section A50-A64 — "Infections with a predominantly sexual mode of transmission" within Chapter 1 of the ICD-10-CM Tabular List.
Use A56.3 when the patients documented diagnosis matches "Chlamydial infection of anus and rectum" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Chlamydial infection of anus and rectum is A56.3.
Yes, A56.3 can be used as a primary diagnosis code since it is billable and specific.
A56.3 is in Chapter 1 of the ICD-10-CM Tabular List.
Yes, A56.3 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.