STD Screening ICD-10-CM Codes

STD Screening ICD-10-CM Codes

Learn about STD Screening ICD-10-CM Code Z11.3, when to use it, related diagnoses, and how screenings help detect infections and support preventive care.

By Wynona Jugueta on Aug 8, 2025.

Fact Checked by Gale Alagos.

Use Code

What are STD Screening ICD-10-CM Codes?

When documenting screening for sexually transmitted diseases (STDs), the main ICD-10-CM code to use is Z11.3 – Encounter for screening for infections with a predominantly sexual mode of transmission.

This code is assigned during a medical encounter for screening when a patient presents without symptoms but requests STD testing due to concerns over exposure, individual risk factors, or routine preventive care.

It's important to note that Z11.3 is not valid as a principal diagnosis. It does not indicate a confirmed disease but rather that the patient is undergoing preventive services to detect infections with a predominantly sexual mode of transmission, such as chlamydia trachomatis, gonorrhea, syphilis, hepatitis B, human papillomavirus (HPV), and human immunodeficiency virus (HIV).

Which STD Screening ICD-10-CM Codes are billable?

Yes. Z11.3 is billable when used in the context of STD screening but not for diagnostic purposes. Once a specific diagnosis has been made—such as chlamydia, gonorrhea, or HIV—providers should code for that sexually transmitted infection (STI) directly using the specific codes assigned to each condition.

Using ICD-10 codes like Z11.3 ensures that screening services are accurately captured for clinical and billing purposes for medical professionals. This includes:

  • Recording screening encounters in the medical record
  • Supporting medical necessity for insurance reimbursement
  • Highlighting the presence of problems related to sexual transmission

It is also important to note that this code should only be used when no symptoms or confirmed infection is present. Sometimes, Z11.4 "Encounter for screening for human immunodeficiency virus [HIV]" can also be used specifically for HIV screening.

Proper documentation also supports risk stratification, helping providers identify those who may need additional preventive services or follow-up.

Clinical information

Routine STD testing plays a critical role in preventive medicine, especially in pediatric medicine, family medicine, and public health. Screening helps detect sexually transmitted diseases (STDs) or sexually transmitted infections (STIs) early, often before symptoms appear. This proactive approach can significantly reduce long-term health complications and help prevent further transmission.

Key benefits include:

  • Early identification of infections
  • Timely treatment and reduced severity
  • Protection of partners from sexual contact transmission
  • Reduced healthcare burden due to untreated infectious and parasitic diseases

During an STD screening, if the results return positive, the provider must update the medical record with the relevant diagnostic examination code based on the disease detected.

Some of the most common STDs screened under this code include:

  • Chlamydia – A common bacterial infection, especially in young adults
  • Gonorrhea – Another bacterial infection often tested alongside chlamydia
  • Syphilis – A potentially serious disease requiring early detection
  • HIV (Human Immunodeficiency Virus) – Can be screened via antibody/antigen testing
  • HPV (Human Papillomavirus) – Includes high-risk strains that may lead to cancer
  • Hepatitis B – Often tested due to its link to sexual transmission

According to clinical guidelines and public health organizations, STD screening is especially recommended for:

  • Sexually active individuals under 25
  • Individuals with multiple partners
  • People with known high-risk sexual behavior
  • Men who have sex with men
  • Patients in high-prevalence populations

Routine STI screening is essential in family medicine, pediatric medicine, and other specialties concerned with medical conditions linked to sexual contact.

Related STD Screening ICD-10-CM Codes diagnoses

If screening reveals an active infection, replace Z11.3 with the specific ICD-10 code for the diagnosed condition. Examples include:

  • A56.01 – Chlamydial infection of the lower genitourinary tract
  • A54.00 – Gonococcal infection, unspecified site
  • A51.0 – Primary syphilis
  • B20 – HIV disease
  • B16.9 – Acute hepatitis B without delta-agent and without hepatic coma
  • B97.7 – Papillomavirus as the cause of diseases classified elsewhere

These specific diagnoses align the care plan with appropriate treatment, follow-up, and public health reporting protocols.

Synonyms include

  • Sexually transmitted disease screening
  • Sexually transmitted disease test
  • Sexually transmitted infection screening
  • Sexually transmitted infection test
  • STD test
  • STD tests
  • STI test
  • STI tests
  • ICD-10 codes for sexually transmitted infection screening
  • STD tests ICD-10
  • STI screening ICD-10

Commonly asked questions

Common symptoms include unusual discharge, painful urination, sores or bumps on the genitals, itching, and pelvic pain. However, many sexually transmitted diseases can be asymptomatic, so regular STD screening is crucial even without visible signs.

STD screening tests include urine tests, blood tests, swabs of genital areas, and physical examinations. Specific screenings may target infections like chlamydia, gonorrhea, syphilis, HIV, hepatitis B, and HPV.

Yes, self-testing kits for STDs are available and can screen for infections like chlamydia, gonorrhea, HIV, and more from home. It’s important to follow up with a healthcare provider for confirmation and treatment if results are positive.

Related ICDs

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