2026 ICD-10-CM Diagnosis Code Z11Encounter for screening for infectious and parasitic diseases
Z11 is a non-billable ICD-10-CM category code for encounter for screening for infectious and parasitic diseases, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z11.0, Z11.1, Z11.2, and Z11.3.
Code Identity
Code Classification
Specific Coding for Encounter for screening for infec/parastc diseasesOverview
Non-specific codes like Z11 require more characters. Use one of these billable codes instead:
Use Z11.0 for Encounter for screening for intestinal infectious diseases
Use Z11.1 for Encounter for screening for respiratory tuberculosis
Use Z11.2 for Encounter for screening for other bacterial diseases
Use Z11.3 for Encounter for screening for infections with a predominantly sexual mode of transmission
Use Z11.4 for Encounter for screening for human immunodeficiency virus [HIV]
Z11.5 for Encounter for screening for other viral diseases
Use Z11.51 for Encounter for screening for human papillomavirus (HPV)
Use Z11.52 for Encounter for screening for COVID-19
Use Z11.59 for Encounter for screening for other viral diseases
Use Z11.6 for Encounter for screening for other protozoal diseases and helminthiases
Use Z11.7 for Encounter for testing for latent tuberculosis infection
Use Z11.8 for Encounter for screening for other infectious and parasitic diseases
Use Z11.9 for Encounter for screening for infectious and parasitic diseases, unspecified
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.
Type 1 Excludes
- encounter for diagnostic examination-code to sign or symptom
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Patient EducationClinical
Health Screening
Screenings are tests that look for diseases before you have symptoms. Screening tests can find diseases early, when they're easier to treat. You can get some screenings in your doctor's office. Others need special equipment, so you may need to go to a different office or clinic.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
Questions About Z11Overview
Is Z11 a billable code?
No. This is a category header that groups the codes for encounter for screening for infectious and parasitic diseases, and headers cannot be submitted on claims. Claims for encounter for screening for infectious and parasitic diseases need a more specific code from this category, such as Z11.0, Z11.1, and Z11.2.
