ICD-10 code for infectious organism carrier of

The ICD-10-CM code for infectious organism carrier of is Z22.9 (Carrier of infectious disease, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Z22.9.

Within Z22, choose Z22.9 (unspecified) only when documentation doesn't support a more specific option: carrier of typhoid (Z22.0), carrier of other intestinal infectious diseases (Z22.1), carrier of diphtheria (Z22.2), carrier of other specified bacterial diseases (Z22.3), carrier of infections with a predominantly sexual mode of transmission (Z22.4), carrier of human T-lymphotropic virus type-1 [HTLV-1] infection (Z22.6), latent tuberculosis (Z22.7) and carrier of other infectious diseases (Z22.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.