Z22
Z22 — Carrier of infectious disease
Non-billable headerICD-10-CM
Z22 is a non-billable header ICD-10-CM code for carrier of infectious disease. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- carrier of viral hepatitis (B18.-)
Includes
Conditions this code covers.
- colonization status
- suspected carrier
Other codes that can never be billed with Z22
These codes carry an Excludes1 note pointing at Z22. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z22 alone.
- O99.82Streptococcus B carrier state complicating pregnancy, childbirth and the puerperium
- 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
Z22 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.
Code to one of these instead Z22
9 child codes. Green means billable.
- Z22.0Carrier of typhoid
- Z22.1Carrier of other intestinal infectious diseases
- Z22.2Carrier of diphtheria
- Z22.3Carrier of other specified bacterial diseases
- Z22.4Carrier of infections with a predominantly sexual mode of transmission
- Z22.6Carrier of human T-lymphotropic virus type-1 [HTLV-1] infection
- Z22.7Latent tuberculosis
- Z22.8Carrier of other infectious diseases
- Z22.9Carrier of infectious disease, unspecified
Questions about Z22
- Is Z22 a billable ICD-10-CM code?
- No. Z22 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does Z22 sit in the tabular list?
- Factors influencing health status and contact with health services (Z00-Z99), in the block Persons with potential health hazards related to communicable diseases (Z20-Z29).