Question 1

What is ICD-10 code I69.323?

Accepted Answer

I69.323 is the ICD-10-CM diagnosis code for fluency disorder following cerebral infarction. Difficulty with speech fluency (stuttering or stammering) that develops after a stroke caused by a blood clot in the brain. I69.323 sits in the ICD-10-CM chapter for diseases of the circulatory system (i00-i99), within the section covering cerebrovascular diseases (i60-i69).

I69.323 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28, V24, ESRD, or RxHCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

This code is used for post-stroke sequelae; ensure the cerebral infarction is documented in the patient's history.

Question 2

Is I69.323 an HCC code?

Accepted Answer

No. I69.323 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 I69.323 billable?

Accepted Answer

Yes. I69.323 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. I69.323 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 I69.323 map to under V28?

Accepted Answer

I69.323 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 RAF reference is published for I69.323?

Accepted Answer

I69.323 has no separately stated V28 community reference coefficient. Check the current CMS mapping and factor files before using it in any member-score workflow.

Question 6

What is the V28 vs V24 difference for I69.323?

Accepted Answer

I69.323 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 I69.323 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 I69.323?

Accepted Answer

This code is used for post-stroke sequelae; ensure the cerebral infarction is documented in the patient's history Fluency disorder is distinct from other speech deficits; do not use this code for aphasia or dysarthria unless fluency is the primary issue I69.323 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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I69.323

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I69.323 ICD-10-CM Code: Fluency disorder following cerebral infarction

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I69.323

Is I69.323 an HCC code?

Get the V28 mapping + MEAT cheat sheet

What This Code Means

Coding Tips

Child Codes

Code Hierarchy

More on I69.323

Related condition guides

Work I69.323 in HCC Buddy