Z20.01 Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli)

Billable ICD-10-CM code, FY2026.

Applies from Z20 Contact with and (suspected) exposure to communicable diseases

Excludes1 (never code together)

• carrier of infectious disease (Z22.-)
• diagnosed current infectious or parasitic disease -see Alphabetic Index

Excludes2 (not included here)

• personal history of infectious and parasitic diseases (Z86.1-)

MS-DRG index

Defines the logic of DRG(s) 795 in MDC 15.

Approximate ICD-9-CM (GEMs)

• V01.83 Contact with or exposure to escherichia coli (E. coli)

Code annotations containing back-references to Z20.01

Back-references to Z20

• Type 2 Excludes: Z77 Other contact with and (suspected) exposures hazardous to health ("contact with and (suspected) exposure to communicable diseases (Z20.-)")
• Type 2 Excludes: Z83 Family history of other specific disorders ("contact with and (suspected) exposure to communicable disease in the family (Z20.-)")

Diagnosis Index entries for Z20.01

• Contact (with) › Escherichia coli (E. coli)
• Contact (with) › intestinal infectious disease NEC › Escherichia coli (E. coli)
• Exposure (to) › Escherichia coli (E. coli)
• Exposure (to) › intestinal infectious disease NEC › Escherichia coli (E. coli)

Nearby codes

• Z20 Contact with and (suspected) exposure to communicable diseases
• Z20.0 Contact with and (suspected) exposure to intestinal infectious diseases
• Z20.01 Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli) (this code)
• Z20.09 Contact with and (suspected) exposure to other intestinal infectious diseases
• Z20.1 Contact with and (suspected) exposure to tuberculosis
• Z20.2 Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission
• Z20.3 Contact with and (suspected) exposure to rabies
• Z20.4 Contact with and (suspected) exposure to rubella