ICD-10-CM 2027 diagnosis code
V99.XXXAUnspecified transport accident, initial encounter
V99.XXXA is a valid, billable ICD-10-CM code for unspecified transport accident, initial encounter. 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 V99.XXXA
V99.XXXA is the ICD-10-CM diagnosis code for unspecified transport accident, initial encounter. It belongs to category V99 (unspecified transport accident), block V98-V99 (other and unspecified transport accidents) 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.
The 7th character "A" means initial encounter: use it while the patient is receiving active treatment for the condition.
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 E848 (accidents involving other vehicles, not elsewhere classifiable).
7th character
Ainitial encounter
Other encounter types for V99:
Notes that apply from higher levels
Instructions written at a parent level also apply to V99.XXXA.
Broader instructions also apply from V98-V99 Other and unspecified transport accidents and Chapter 20: External causes of morbidity.
ICD-9-CM equivalent
Converter →- E848Accidents involving other vehicles, not elsewhere classifiableapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about V99.XXXA
Is V99.XXXA billable?
- Yes. V99.XXXA is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "A" at the end of V99.XXXA mean?
- It is the 7th character for initial encounter. Per the official guidelines, use it while the patient is receiving active treatment for the condition.
Can V99.XXXA be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict V99.XXXA as a principal diagnosis.
Is V99.XXXA a CC or MCC?
- No. V99.XXXA is neither a CC nor an MCC under MS-DRG v44.0.