What is the ICD-10 (International Classification of Diseases, 10th Revision) code for a patient exposed to a sexually transmitted disease (STD)?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Educational purpose only • Exercise caution as content is pending human review
Article Review Status
Submitted
Under Review
Approved

Last updated: June 21, 2025View editorial policy

Personalize

Help us tailor your experience

Which best describes you? Your choice helps us use language that's most understandable for you.

From the Guidelines

The ICD-10 code for a patient exposed to a sexually transmitted disease is Z20.2, which specifically denotes "Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission." This code should be used when documenting cases where a patient has been exposed to an STD but has not yet been diagnosed with the infection itself. When using this code in clinical practice, it's essential to also document the specific STD to which the patient was exposed if known, such as gonorrhea, chlamydia, syphilis, or HIV, though this additional information doesn't change the code assignment. The Z20.2 code falls under the broader category of Z20 codes, which cover various types of contact with and exposure to communicable diseases. Using the correct exposure code is essential for proper documentation, appropriate follow-up care planning, contact tracing efforts, and accurate healthcare statistics tracking. If the patient later develops the STD, the code would change to reflect the actual infection rather than just the exposure. Key considerations in managing patients exposed to STDs include prompt evaluation, testing, and treatment of partners, as emphasized in guidelines such as those from the Centers for Disease Control and Prevention 1. Additionally, prevention messages tailored to the patient's specific risks and measures to avoid acquiring or transmitting STDs are crucial 1. While various studies and guidelines discuss the importance of screening for STDs in different populations 1, the primary focus for coding purposes remains on accurately documenting exposure and any subsequent diagnosis. Therefore, Z20.2 is the appropriate ICD-10 code for a patient exposed to a sexually transmitted disease, facilitating comprehensive care and public health tracking.

From the Research

ICD-10 Code for Patient Exposed to STD

  • The ICD-10 code for a patient exposed to a sexually transmitted disease (STD) is not explicitly stated in the provided studies 2, 3, 4, 5, 6.
  • However, the studies discuss various STDs, such as gonorrhea, chlamydia, syphilis, and genital herpes, and their treatment options.
  • The ICD-10 code for exposure to STDs can be found in the Z20 category, which includes codes for contact with and exposure to communicable diseases 3.
  • Specifically, the code Z20.2 is used for contact with and exposure to other viral and chlamydial diseases, while Z20.3 is used for exposure to other diseases, including gonorrhea and syphilis.
  • It is essential to note that ICD-10 codes are subject to change and updates, and healthcare professionals should consult the latest version of the ICD-10 manual for the most accurate and up-to-date information 2, 4, 5, 6.

Relevant ICD-10 Codes

  • Z20.2: Contact with and exposure to other viral and chlamydial diseases
  • Z20.3: Exposure to other diseases, including gonorrhea and syphilis
  • Z20.8: Contact with and exposure to other communicable diseases
  • Z20.9: Contact with and exposure to unspecified communicable disease

Importance of Accurate Coding

  • Accurate ICD-10 coding is crucial for healthcare professionals to ensure proper documentation, billing, and tracking of STD exposures and treatments 3, 5, 6.
  • Inaccurate coding can lead to misclassification, underreporting, or overreporting of STD cases, which can have significant public health implications 2, 4.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

Have a follow-up question?

Our Medical A.I. is used by practicing medical doctors at top research institutions around the world. Ask any follow up question and get world-class guideline-backed answers instantly.