2025 ICD-10-CM Diagnosis Code Z11.8

Encounter for screening for other infectious and parasitic diseases

• Z11.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• Short description: Encounter for screening for oth infec/parastc diseases
• The 2025 edition of ICD-10-CM Z11.8 became effective on October 1, 2024.
• This is the American ICD-10-CM version of Z11.8 – other international versions of ICD-10 Z11.8 may differ.

Applicable To

• Encounter for screening for chlamydia
• Encounter for screening for rickettsial
• Encounter for screening for spirochetal
• Encounter for screening for mycoses

The following code(s) above Z11.8 contain annotation back-references

 that may be applicable to Z11.8:

• Z00-Z99  Factors influencing health status and contact with health services
• Z00-Z13  Persons encountering health services for examinations
• Z11  Encounter for screening for infectious and parasitic diseases

Approximate Synonyms

• Chlamydial disease screening done
• Screening for chlamydia (bacterial infection)
• Screening for chlamydia infection done

Present On Admission

• Z11.8 is considered exempt from POA reporting.

ICD-10-CM Z11.8 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

• 951 Other factors influencing health status

Convert Z11.8 to ICD-9-CMCode History

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change
• 2024 (effective 10/1/2023): No change
• 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to Z11.8:

• Screening (for) Z13.9
  • disease or disorderZ13.9
    • chlamydial Z11.8
    • rickettsial Z11.8
    • spirochetal Z11.8
  • infection
    • mycotic Z11.8
    • parasitic Z11.8
  • parasitic infestationZ11.9
    • specified NEC Z11.8
  • chlamydial diseases Z11.8
  • leptospirosis Z11.8
  • mycoses Z11.8
  • trachoma Z11.8
  • yaws Z11.8