A64

Billable

Unspecified sexually transmitted disease

A64 is the ICD-10-CM code for Unspecified sexually transmitted disease. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
A00-B99
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

What are sexually transmitted infections (STIs)? Sexually transmitted infections (STIs) are infections that are passed from one person to another through sexual contact. If not treated, a STI can develop into a sexually transmitted disease (STD). STIs are usually spread during vaginal, oral, or anal sex. But sometimes they can spread through other sexual contact involving the penis, vagina, mouth, or anus. This is…

Read more about Sexually Transmitted Infections at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code A64?
A64 is the ICD-10-CM code for "Unspecified sexually transmitted disease". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A64 a billable code?
Yes — A64 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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