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ICD-10-CM 2027 diagnosis code

Y92.521Bus station as the place of occurrence of the external cause

✓ Billable / specificPOA exempt

Y92.521 is a valid, billable ICD-10-CM code for bus station as the place of occurrence of the external cause. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Y92.521

Y92.521 is the ICD-10-CM diagnosis code for bus station as the place of occurrence of the external cause. It belongs to category Y92 (place of occurrence of the external cause), block Y90-Y99 (Supplementary factors related to causes of morbidity classified elsewhere) and chapter 20 (external causes of morbidity). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Y92.52 (service areas as the place of occurrence of the external cause), Y92.521 is specifically for bus station as the place of occurrence of the external cause. Related codes cover Airport as the place of occurrence of the external cause (Y92.520), railway station as the place of occurrence of the external cause (Y92.522), highway rest stop as the place of occurrence of the external cause (Y92.523) and gas station as the place of occurrence of the external cause (Y92.524).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as E849.6 (accidents occurring in public building).

Notes that apply from higher levels

Instructions written at a parent level also apply to Y92.521.

› From Y92.5 Trade and service area as the place of occurrence of the external cause
Excludes1
  • garage in private home (Y92.015)
  • schools and other public administration buildings (Y92.2-)

Broader instructions also apply from Y90-Y99 Supplementary factors related to causes of morbidity classified elsewhere and Chapter 20: External causes of morbidity.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to Y92.521.

  • Place of occurrence › bus › station
  • Place of occurrence › service area › bus station

ICD-9-CM equivalent

Converter →
  • E849.6Accidents occurring in public buildingapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Y92.521

Is Y92.521 billable?

Yes. Y92.521 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Y92.521 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Y92.521 as a principal diagnosis.

Is Y92.521 a CC or MCC?

No. Y92.521 is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for Y92.521?

The CMS General Equivalence Mappings map Y92.521 to ICD-9-CM E849.6.