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Z11.0

Z11.0Encounter for screening for intestinal infectious diseases

Billable / specific codeICD-10-CMPOA exempt

Z11.0 is a billable, specific ICD-10-CM code for encounter for screening for intestinal infectious diseases. It is valid for submission on a claim.

Other codes that can never be billed with Z11.0

These codes carry an Excludes1 note pointing at Z11.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z11.0 alone.

  • Z13.811Encounter for screening for lower gastrointestinal disorder

Risk adjustment

Z11.0 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.

How Z11.0 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 Z11.0.

  • Screeningcholera
  • Screeningintestinalinfectious disease
  • Screeningprotozoal diseaseintestinal
  • Screeningdisease or disorderbacterial NECintestinal infectious
  • Screeningdisease or disorderinfectionintestinal
  • Screeningdisease or disorderprotozoalintestinal
  • Screeningdisease or disorderviral NECintestinal

Related codes at this level

Codes that share Z11. If Z11.0 is not quite right, the correct code is usually one of these.

Questions about Z11.0

Is Z11.0 a billable ICD-10-CM code?
Yes. Z11.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z11.0 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.