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Z11.3

Z11.3Encounter for screening for infections with a predominantly sexual mode of transmission

Billable / specific codeICD-10-CMPOA exempt

Z11.3 is a billable, specific ICD-10-CM code for encounter for screening for infections with a predominantly sexual mode of transmission. It is valid for submission on a claim.

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • encounter for screening for human immunodeficiency virus [HIV] (Z11.4)
  • encounter for screening for human papillomavirus (Z11.51)

Risk adjustment

Z11.3 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

Z11.3 is named in 4 Medicare coverage policies 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
  • A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
  • A58747Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
  • A58761Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

How Z11.3 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Z11.3.

  • Screeninggonorrhea
  • Screeningsexually-transmitted disease NEC
  • Screeningsyphilis
  • Screeningvenereal disease
  • Test, tests, testingWassermann
  • Screeningdisease or disordersexually-transmitted NEC
  • Screeningdisease or disordervenereal

Related codes at this level

Codes that share Z11. If Z11.3 is not quite right, the correct code is usually one of these.

Questions about Z11.3

Is Z11.3 a billable ICD-10-CM code?
Yes. Z11.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z11.3 sit in the tabular list?
Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.