Question 1

What is ICD-10 code Z22.341?

Accepted Answer

Z22.341 is the ICD-10-CM diagnosis code for carrier of carbapenem-sensitive acinetobacter baumannii. A person who carries carbapenem-sensitive Acinetobacter baumannii bacteria without being sick, but can potentially spread it to others. Z22.341 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering persons with potential health hazards related to communicable diseases (z20-z29).

Z22.341 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Use this code when culture or testing confirms the bacteria is sensitive to carbapenem antibiotics.

Question 2

Is Z22.341 an HCC code?

Accepted Answer

No. Z22.341 is a billable ICD-10-CM code but does not map to any payment HCC category under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can still be reported on Medicare Advantage encounter data submissions, but it does not contribute to the beneficiary's Risk Adjustment Factor (RAF) score and therefore does not affect the risk-adjusted capitation payment to the plan. V28 reached 100% phase-in for payment year 2026.

Question 3

Is Z22.341 billable?

Accepted Answer

Yes. Z22.341 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. Z22.341 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Question 4

What is the V28 vs V24 difference for Z22.341?

Accepted Answer

Z22.341 does not map to a payment HCC under either the CMS-HCC V28 risk adjustment model or the older V24 model. V28 reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Because neither model rewards Z22.341 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a payment HCC.

Question 5

What should coders know when reporting Z22.341?

Accepted Answer

Use this code when culture or testing confirms the bacteria is sensitive to carbapenem antibiotics Document the specific antibiotic susceptibility results in the medical record for infection control purposes

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Z22.341

Is Z22.341 an HCC code?

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Z22.341 ICD-10-CM Code: Carrier of carbapenem-sensitive Acinetobacter baumannii

HCC Buddy Code Card

Z22.341

Is Z22.341 an HCC code?

What This Code Means

Coding Tips

Child Codes

Code Hierarchy

Open Z22.341 in the Interactive Encoder