ICD-10-CM 2027
ICD-10 code for STD screening
Encounter for screening for infections with a predominantly sexual mode of transmission
Confirmed by the official ICD-10-CM index entry “screening (for) › disease or disorder › sexually-transmitted nec”. Page updated September 29, 2026.
About coding STD screening
The ICD-10-CM code for STD screening is Z11.3 (Encounter for screening for infections with a predominantly sexual mode of transmission). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Z11.3.
It is also searched as STI screening.
Within Z11 (encounter for screening for infectious and parasitic diseases), Z11.3 is specifically for encounter for screening for infections with a predominantly sexual mode of transmission. Related codes cover screening for intestinal infectious diseases (Z11.0), screening for respiratory tuberculosis (Z11.1), screening for other bacterial diseases (Z11.2), screening for human immunodeficiency virus [HIV] (Z11.4), screening for other viral diseases (Z11.5), screening for other protozoal diseases and helminthiases (Z11.6), testing for latent tuberculosis infection (Z11.7), screening for other infectious and parasitic diseases (Z11.8) and 1 more.
The conditions in its Excludes2 note aren't part of Z11.3, but may be coded alongside it if the patient has both: encounter for screening for human immunodeficiency virus [HIV] (Z11.4) and encounter for screening for human papillomavirus (Z11.51).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Related STD screening codes
- Z11.4 Encounter for screening for human immunodeficiency virus [HIV]
Common questions about STD screening ICD-10 codes
What is the ICD-10 code for STD screening?
- Z11.3 — Encounter for screening for infections with a predominantly sexual mode of transmission. More specific codes apply when the documentation supports them: Z11.4.
What is the ICD-10 code for encounter for screening for human immunodeficiency virus [hiv]?
- Z11.4 — Encounter for screening for human immunodeficiency virus [HIV].
Is Z11.3 billable?
- Yes. Z11.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z11.3 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z11.3 a CC or MCC?
- No. Z11.3 is neither a CC nor an MCC under MS-DRG v44.0.