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ICD-10-CM 2027 diagnosis code

Z22.340Carrier of carbapenem-resistant Acinetobacter baumannii

✓ Billable / specificPOA exemptNot a principal dx

Z22.340 is a valid, billable ICD-10-CM code for carrier of carbapenem-resistant acinetobacter baumannii. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code last changed in FY2024 (effective October 1, 2023). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z22.340

Z22.340 is the ICD-10-CM diagnosis code for carrier of carbapenem-resistant Acinetobacter baumannii. It belongs to category Z22 (carrier of infectious disease), block Z20-Z29 (persons with potential health hazards related to communicable diseases) and chapter 21 (factors influencing health status and contact with health services). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Z22.34 (carrier of Acinetobacter baumannii), Z22.340 is specifically for carrier of carbapenem-resistant Acinetobacter baumannii. Related codes cover carbapenem-sensitive Acinetobacter baumannii (Z22.341) and unspecified (Z22.349).

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.

It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It was added in FY2024, effective October 1, 2023.

Notes that apply from higher levels

Instructions written at a parent level also apply to Z22.340.

› From Z22 Carrier of infectious disease
Includes
  • colonization status
  • suspected carrier
Excludes2
  • carrier of viral hepatitis (B18.-)

Broader instructions also apply from Chapter 21: Factors influencing health status and contact with health services.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to Z22.340.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2024 (effective 10/1/2023): Added
  • No changes since FY2024.

Common questions about Z22.340

Is Z22.340 billable?

Yes. Z22.340 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Z22.340 be used as a principal diagnosis?

No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.

Is Z22.340 a CC or MCC?

No. Z22.340 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does Z22.340 group to?

Z22.340 is used in the MS-DRG v44.0 logic for MS-DRG 951 (Other Factors Influencing Health Status). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.