Question 1

What is ICD-10 code Y92.523?

Accepted Answer

Y92.523 is the ICD-10-CM diagnosis code for highway rest stop as the place of occurrence of the external cause. An injury or accident that occurred at a highway rest stop or rest area. Y92.523 sits in the ICD-10-CM chapter for external causes of morbidity (v00-y99), within the section covering supplementary factors related to causes of morbidity classified elsewhere (y90-y99).

Y92.523 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.

Include injuries in rest stop buildings, parking areas, and facilities.

Question 2

Is Y92.523 an HCC code?

Accepted Answer

No. Y92.523 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 Y92.523 billable?

Accepted Answer

Yes. Y92.523 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. Y92.523 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 Y92.523?

Accepted Answer

Y92.523 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 Y92.523 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 Y92.523?

Accepted Answer

Include injuries in rest stop buildings, parking areas, and facilities Pair with external cause codes to indicate the type of incident (fall, struck by vehicle, etc.)

HCC Buddy Code Card

Y92.523

Is Y92.523 an HCC code?

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Open Y92.523 in the Interactive Encoder

Y92.523 ICD-10-CM Code: Highway rest stop as the place of occurrence of the external cause

HCC Buddy Code Card

Y92.523

Is Y92.523 an HCC code?

What This Code Means

Coding Tips

Child Codes

Code Hierarchy

Open Y92.523 in the Interactive Encoder