Y92.815 ICD-10-CM Code: Train as the place of occurrence of the external cause
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / External causes of morbidity (V00-Y99) / Supplementary factors related to causes of morbidity classified elsewhere (Y90-Y99)
Y92.815
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceTrain as the place of occurrence of the external cause
An injury or accident that occurred while the person was on a train.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for Y92.815 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Y92.815 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Y92.815 in this effective period.
Excludes 1
Official- transport accidents (V00-V99)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Y92.815 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Y92.815 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Y92.815 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is Y92.815 an HCC code?
No. Y92.815 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- Y92.815
- Description
- Train as the place of occurrence of the external cause
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Y92.815 is the ICD-10-CM diagnosis code for train as the place of occurrence of the external cause. An injury or accident that occurred while the person was on a train. Y92.815 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).
Y92.815 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 as a supplementary external cause code to document that the injury happened on a train.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Y92.815 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use as a supplementary external cause code to document that the injury happened on a train
- •Pair with the primary injury code and any other relevant external cause codes