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BETA v.3.0

2025 ICD-10-CM code A64

Unspecified sexually transmitted disease. This code is used when the specific STD is not documented or unknown.

Use more specific codes if available. This code should not be used for routine STD screening in the absence of symptoms or risk factors.

Medical necessity for the encounter related to the suspected STD should be documented, including the rationale for testing and treatment.

Clinicians should diagnose STDs based on patient history, physical examination, and laboratory testing. Treatment varies depending on the specific infection but may include antibiotics or antiviral medications. Patient education regarding prevention and early detection is crucial.

IMPORTANT:Consider more specific codes if the STD is known (e.g., A54.9 for unspecified gonococcal infection, A59.9 for unspecified trichomoniasis). Use additional code to identify resistance to antimicrobial drugs (Z16.-). Excludes1: certain localized infections - see body system-related chapters. Excludes2: carrier or suspected carrier of infectious disease (Z22.-) infectious and parasitic diseases complicating pregnancy, childbirth, and the puerperium (O98.-) infectious and parasitic diseases specific to the perinatal period (P35-P39) influenza and other acute respiratory infections (J00-J22). Use additional code B20 for HIV if applicable.

In simple words: This code is used when a person has a sexually transmitted disease (STD), but the specific type of STD is not known or specified.

Sexually transmitted diseases (STDs) are infections transmitted through sexual contact. This code is used when the specific STD is not documented, unknown, or not otherwise specified.

Example 1: A patient presents with symptoms suggestive of an STD, such as genital discharge or pain, but initial laboratory tests are inconclusive. A64 is used until a definitive diagnosis can be made., A patient reports a history of an STD, but the specific type is not documented in their medical record. A64 may be used if further clarification cannot be obtained., A patient is being screened for multiple STDs. If the results are negative for the specifically tested infections, but the patient still exhibits symptoms, A64 can be used to document the ongoing investigation.

Documentation should include signs, symptoms, sexual history, laboratory results (if available), and any treatment provided.

  • Payment Status: Active
  • Specialties:Infectious Disease, Urology, Gynecology, Family Medicine, Internal Medicine, Pediatrics
  • Place of Service:Office, Inpatient Hospital, Outpatient Hospital, Emergency Room - Hospital, Public Health Clinic, Federally Qualified Health Center, etc.
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