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ICD-10-CM 2027 diagnosis code

W54.0XXABitten by dog, initial encounter

✓ Billable / specificPOA exemptRequires 7th character

W54.0XXA is a valid, billable ICD-10-CM code for bitten by dog, 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 W54.0XXA

W54.0XXA is the ICD-10-CM diagnosis code for Bitten by dog, initial encounter. It belongs to category W54 (contact with dog), block W50-W64 (exposure to animate mechanical forces) 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 E906.0 (dog bite).

7th character

Ainitial encounter

Other encounter types for W54.0:

Notes that apply from higher levels

Instructions written at a parent level also apply to W54.0XXA.

› From W54 Contact with dog
Includes
  • contact with saliva, feces or urine of dog

Broader instructions also apply from W50-W64 Exposure to animate mechanical forces and Chapter 20: External causes of morbidity.

ICD-9-CM equivalent

Converter →

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 W54.0XXA

Is W54.0XXA billable?

Yes. W54.0XXA 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 W54.0XXA 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 W54.0XXA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict W54.0XXA as a principal diagnosis.

Is W54.0XXA a CC or MCC?

No. W54.0XXA is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for W54.0XXA?

The CMS General Equivalence Mappings map W54.0XXA to ICD-9-CM E906.0.