Question 1

What is ICD-10 code Z12.4?

Accepted Answer

Z12.4 is the ICD-10-CM diagnosis code for encounter for screening for malignant neoplasm of cervix. A screening visit to check for cervical cancer, typically including a Pap smear or HPV test. Z12.4 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering persons encountering health services for examinations (z00-z13).

Z12.4 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.

This code is used for routine cervical cancer screening in asymptomatic women.

Question 2

Is Z12.4 an HCC code?

Accepted Answer

No. Z12.4 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 Z12.4 billable?

Accepted Answer

Yes. Z12.4 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. Z12.4 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

Which HCC does Z12.4 map to under V28?

Accepted Answer

Z12.4 does not map to a CMS-HCC V28 payment category. Check the current CMS-HCC V28 model file for payment year 2026 rather than an older V24 tip sheet.

Question 5

What does Z12.4 pay in RAF?

Accepted Answer

Z12.4 has no separately stated V28 community RAF weight. If it is not a V28 payment HCC, it adds nothing to a community RAF score.

Question 6

What is the V28 vs V24 difference for Z12.4?

Accepted Answer

Z12.4 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 community model rewards Z12.4 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's V28/V24 community RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a community payment HCC.

Question 7

What documentation supports Z12.4?

Accepted Answer

This code is used for routine cervical cancer screening in asymptomatic women Document the specific screening test performed (Pap smear, HPV test, co-testing) for complete records Z12.4 is not a CMS-HCC payment code, so MEAT is not the payment hook. Documentation still has to support the diagnosis if you report it.

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Z12.4

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Z12.4 ICD-10-CM Code: Encounter for screening for malignant neoplasm of cervix

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Z12.4

Is Z12.4 an HCC code?

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What This Code Means

Coding Tips

Excludes 1, Do NOT code together

Excludes 2, Not included here, may code separately

Child Codes

Code Hierarchy

Work Z12.4 in HCC Buddy