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ICD-10-CM 2027 diagnosis code

Y04.1XXDAssault by human bite, subsequent encounter

✓ Billable / specificPOA exemptRequires 7th character

Y04.1XXD is a valid, billable ICD-10-CM code for assault by human bite, subsequent 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 Y04.1XXD

Y04.1XXD is the ICD-10-CM diagnosis code for assault by human bite, subsequent encounter. It belongs to category Y04 (assault by bodily force), block X92-Y09 (assault) 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 "D" means subsequent encounter: use it for encounters after active treatment, while the patient is healing or recovering.

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 E968.7 (assault by human bite).

7th character

Dsubsequent encounter

Other encounter types for Y04.1:

Notes that apply from higher levels

Instructions written at a parent level also apply to Y04.1XXD.

› From Y04 Assault by bodily force
Excludes1

Broader instructions also apply from X92-Y09 Assault and Chapter 20: External causes of morbidity.

ICD-9-CM equivalent

Converter →
  • E968.7Assault by human biteapproximate

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 Y04.1XXD

Is Y04.1XXD billable?

Yes. Y04.1XXD is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "D" at the end of Y04.1XXD mean?

It is the 7th character for subsequent encounter. Per the official guidelines, use it for encounters after active treatment, while the patient is healing or recovering.

Can Y04.1XXD be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Y04.1XXD as a principal diagnosis.

Is Y04.1XXD a CC or MCC?

No. Y04.1XXD is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for Y04.1XXD?

The CMS General Equivalence Mappings map Y04.1XXD to ICD-9-CM E968.7.