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Z22.35

Z22.35: Carrier of Enterobacterales

Non-billable headerICD-10-CM

Z22.35 is a non-billable header ICD-10-CM code for carrier of enterobacterales. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Carrier of E. coli
  • Carrier of K. pneumoniae

Excludes2 inherited from the categories above Z22.35

Not part of this code, but both may be coded when both are present.

Written on Z22: Carrier of infectious disease

  • carrier of viral hepatitis (B18.-)

Other codes that can never be billed with Z22.35

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z20Contact with and (suspected) exposure to communicable diseases
  • R82.7Abnormal findings on microbiological examination of urine
  • R83.5Abnormal microbiological findings in cerebrospinal fluid
  • R84.5Abnormal microbiological findings in specimens from respiratory organs and thorax
  • R85.5Abnormal microbiological findings in specimens from digestive organs and abdominal cavity
  • R86.5Abnormal microbiological findings in specimens from male genital organs
  • R87.5Abnormal microbiological findings in specimens from female genital organs
  • R89.5Abnormal microbiological findings in specimens from other organs, systems and tissues

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Z22.35

3 child codes. Green means billable.

Other codes under Z22.3

ICD-10-CMFY2027· effective October 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.