Z11.0 Encounter for screening for intestinal infectious diseases

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applies from Z11 Encounter for screening for infectious and parasitic diseases

Applicable to

• 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.

Excludes1 (never code together)

• encounter for diagnostic examination-code to sign or symptom

MS-DRG index

Defines the logic of DRG(s) 951 in MDC 23.

Approximate ICD-9-CM (GEMs)

• V74.0 Screening examination for cholera (approximate)
• V75.8 Screening examination for other specified parasitic infections (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.

Code annotations containing back-references to Z11.0

Back-references to Z11.0

• Type 2 Excludes: Z11.5 Encounter for screening for other viral diseases ("encounter for screening for viral intestinal disease (Z11.0)")
• Type 2 Excludes: Z11.6 Encounter for screening for other protozoal diseases and helminthiases ("encounter for screening for protozoal intestinal disease (Z11.0)")
• Type 1 Excludes: Z13.811 Encounter for screening for lower gastrointestinal disorder ("encounter for screening for intestinal infectious disease (Z11.0)")

Back-references to Z11

• Type 2 Excludes: Z00 Encounter for general examination without complaint, suspected or reported diagnosis ("special screening examinations (Z11-Z13)")
• Type 2 Excludes: Z01 Encounter for other special examination without complaint, suspected or reported diagnosis ("screening examinations (Z11-Z13)")

Diagnosis Index entries for Z11.0

• Screening (for) › cholera
• Screening (for) › disease or disorder › bacterial NEC › intestinal infectious
• Screening (for) › disease or disorder › infection › intestinal
• Screening (for) › disease or disorder › protozoal › intestinal
• Screening (for) › disease or disorder › viral NEC › intestinal
• Screening (for) › intestinal › infectious disease
• Screening (for) › protozoal disease › intestinal

Nearby codes

• Z11 Encounter for screening for infectious and parasitic diseases
• Z11.0 Encounter for screening for intestinal infectious diseases (this code)
• Z11.1 Encounter for screening for respiratory tuberculosis
• Z11.2 Encounter for screening for other bacterial diseases
• Z11.3 Encounter for screening for infections with a predominantly sexual mode of transmission
• Z11.4 Encounter for screening for human immunodeficiency virus [HIV]
• Z11.5 Encounter for screening for other viral diseases