ICD-10-CM Codes
V00-Y99 External causes of morbidity
X92-Y09 Assault
Y09- Assault by unspecified means
2021 ICD-10-CM Diagnosis Code Y09

2021 ICD-10-CM Diagnosis Code Y09

Assault by unspecified means

2016

2017

2018

2019

2020

2021

Billable/Specific Code

Y09 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2021 edition of ICD-10-CM Y09 became effective on October 1, 2020.
This is the American ICD-10-CM version of Y09 - other international versions of ICD-10 Y09 may differ.

ICD-10-CM Coding Rules

Y09 describes the circumstance causing an injury, not the nature of the injury.

Applicable To

Assassination (attempted) NOS
Homicide (attempted) NOS
Manslaughter (attempted) NOS
Murder (attempted) NOS

The following code(s) above Y09 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to Y09:

V00-Y99
2021 ICD-10-CM Range V00-Y99
External causes of morbidity
Note
- This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.
External causes of morbidity
X92-Y09
2021 ICD-10-CM Range X92-Y09
Assault
Includes
- homicide
- injuries inflicted by another person with intent to injure or kill, by any means
Type 1 Excludes
- injuries due to legal intervention (Y35.-)
- injuries due to operations of war (Y36.-)
- injuries due to terrorism (Y38.-)
Assault

Approximate Synonyms

Cause of injury, assault
Traumatic injury due to assault

Convert Y09 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change

External Cause Index entries containing back-references to Y09:

Assault (homicidal) (by) (in) Y09
- injury Y09
- weapon Y09
- wound Y09
- violence Y09
Injury, injured (accidental(ly)) X58
ICD-10-CM Diagnosis Code X58
Exposure to other specified factors
Applicable To
Accident NOS
Exposure NOS
- homicide Y09 - see also Assault

ICD-10-CM Codes Adjacent To Y09

Y08.09XS …… sequela

Y08.8 Assault by other specified means

Y08.81 Assault by crashing of aircraft

Y08.81XA …… initial encounter

Y08.81XD …… subsequent encounter

Y08.81XS …… sequela

Y08.89 Assault by other specified means

Y08.89XA …… initial encounter

Y08.89XD …… subsequent encounter

Y08.89XS …… sequela

Y09 Assault by unspecified means

Y21 Drowning and submersion, undetermined intent

Y21.0 Drowning and submersion while in bathtub, undetermined intent

Y21.0XXA …… initial encounter

Y21.0XXD …… subsequent encounter

Y21.0XXS …… sequela

Y21.1 Drowning and submersion after fall into bathtub, undetermined intent

Y21.1XXA …… initial encounter

Y21.1XXD …… subsequent encounter

Y21.1XXS …… sequela

Y21.2 Drowning and submersion while in swimming pool, undetermined intent

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2021 ICD-10-CM Diagnosis Code Y09

Assault by unspecified means

External causes of morbidity

Assault

Exposure to other specified factors