A64 - Unspecified sexually transmitted disease

Version 2023
ICD-10:A64
Short Description:Unspecified sexually transmitted disease
Long Description:Unspecified sexually transmitted disease
Status: Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Certain infectious and parasitic diseases (A00–B99)
    • Infections with a predominantly sexual mode of transmission (A50-A64)
      • Unspecified sexually transmitted disease (A64)

A64 is a billable ICD-10 code used to specify a medical diagnosis of unspecified sexually transmitted disease. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.

Unspecified diagnosis codes like A64 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Index to Diseases and Injuries References

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for this diagnosis code are found in the injuries and diseases index:

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
A64099.9 - Venereal disease NOS

Patient Education


Sexually Transmitted Diseases

What are sexually transmitted diseases (STDs)?

Sexually transmitted diseases (STDs), or sexually transmitted infections (STIs), are infections that are passed from one person to another through sexual contact. The contact is usually vaginal, oral, or anal sex. But sometimes they can spread through other intimate physical contact. This is because some STDs, like herpes and HPV, are spread by skin-to-skin contact.

There are more than 20 types of STDs, including:

What causes sexually transmitted diseases (STDs)?

STDs can be caused by bacteria, viruses, and parasites.

Who is affected by sexually transmitted diseases (STDs)?

Most STDs affect both men and women, but in many cases the health problems they cause can be more severe for women. If a pregnant woman has an STD, it can cause serious health problems for the baby.

What are the symptoms of sexually transmitted diseases (STDs)?

STDs don't always cause symptoms or may only cause mild symptoms. So it is possible to have an infection and not know it. But you can still pass it on to others.

If there are symptoms, they could include:

How are sexually transmitted diseases (STDs) diagnosed?

If you are sexually active, you should talk to your health care provider about your risk for STDs and whether you need to be tested. This is especially important since many STDs do not usually cause symptoms.

Some STDs may be diagnosed during a physical exam or through microscopic examination of a sore or fluid swabbed from the vagina, penis, or anus. Blood tests can diagnose other types of STDs.

What are the treatments for sexually transmitted diseases (STDs)?

Antibiotics can treat STDs caused by bacteria or parasites. There is no cure for STDs caused by viruses, but medicines can often help with the symptoms and lower your risk of spreading the infection.

Correct usage of latex condoms greatly reduces, but does not completely eliminate, the risk of catching or spreading STDs. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.

There are vaccines to prevent HPV and hepatitis B.

Can sexually transmitted diseases (STDs) be prevented?

Correct usage of latex condoms greatly reduces, but does not completely eliminate, the risk of catching or spreading STDs. If your or your partner is allergic to latex, you can use polyurethane condoms. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.

There are vaccines to prevent HPV and hepatitis B.

Centers for Disease Control and Prevention


[Learn More in MedlinePlus]

Code History