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  6. 2024 ICD-10-CM Code Y09

2024 ICD-10-CM Diagnosis Code Y09

Assault by unspecified means

ICD-10-CM Code:
Y09
ICD-10 Code for:
Assault by unspecified means
Is Billable?
Yes - Valid for Submission
Code Navigator:

Code Classification

  • External causes of morbidity and mortality
    (V01–Y99)
    • Assault
      (X92-Y09)
      • Assault by unspecified means
        (Y09)

Y09 is a billable diagnosis code used to specify a medical diagnosis of assault by unspecified means. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like Y09 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Assault
  • Assault and battery
  • Assault by person
  • Battery
  • Death due to assault AND battery
  • Death or significant injury of a patient or staff member resulting from a physical assault that occurs within or on the grounds of the healthcare facility
  • Euthanasia
  • Exposure to attack by other person
  • First degree murder
  • Fratricide
  • Gangland style homicide
  • Homicide
  • Homicide and assault by fight, brawl and rape
  • Homicide attempt
  • Homicide by overkill
  • Infanticide
  • Justifiable homicide
  • Killing
  • Late effect due to homicide attempt
  • Late effects of assault
  • Manslaughter
  • Matricide
  • Murder
  • Murder by hired killer
  • Murder of acquaintance
  • Murder of friend
  • Murder of relative
  • Murder of spouse
  • Murder of stranger
  • Non-judicial execution
  • Patricide
  • Second degree murder
  • Serial killing
  • Serious reportable event associated with criminal activity
  • Sororicide
  • Traumatic injury due to assault
  • Undetermined manner of death
  • Undetermined manner of death, homicide suspected
  • Unlawful killing

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
External cause codes: intent of injury, assaultEXT022X - Not applicable.X - Not applicable.
External cause codes: unspecified mechanismEXT019X - Not applicable.X - Not applicable.

Clinical Information

  • Homicide

    the killing of one person by another.

  • Euthanasia

    the act or practice of killing or allowing death from natural causes, for reasons of mercy, i.e., in order to release a person from incurable disease, intolerable suffering, or undignified death. (from beauchamp and walters, contemporary issues in bioethics, 5th ed)

  • Euthanasia, Active

    the act or practice of killing for reasons of mercy, i.e., in order to release a person or animal from incurable disease, intolerable suffering, or undignified death. (from beauchamp and walters, contemporary issues in bioethics, 5th ed)

  • Euthanasia, Active, Voluntary

    active euthanasia of a patient at the patient's request and/or with the patient's consent.

  • Euthanasia, Animal

    the killing of animals for reasons of mercy, to control disease transmission or maintain the health of animal populations, or for experimental purposes (animal experimentation).

  • Euthanasia, Involuntary

    the act or practice of killing or withholding life-sustaining treatment from a person with a medical condition, especially disabled persons, without informed consent, despite the mental competency of the person to give consent.

  • Euthanasia, Passive

    failing to prevent death from natural causes, for reasons of mercy by the withdrawal or withholding of life-prolonging treatment.

  • Infanticide

    the killing of infants at birth or soon after.

  • Animal Experimentation

    the use of animals as investigational subjects.

  • Assault

    a physical attack.

  • Assault By Firearm

    a physical attack with a gun.

  • Assault By Sharp Object

    a physical attack with a pointed object.

  • DRRI-2 - A: Witnessed Someone Assaulted|DRRI1-A: Witnessed Someone Assaulted|DRRI1-A: Witnessed Someone Assaulted|DRRI1A10

    deployment risk and resilience inventory-2 (drri-2) before deployment: i witnessed someone being seriously assaulted or killed.

  • DRRI-2 - D: Assault on Entrenched Positions|DRRI1-D: Assault on Entrenched Positions|DRRI1-D: Assault on Entrenched Positions|DRRI1D02

    deployment risk and resilience inventory-2 (drri-2) during deployment: i took part in an assault on entrenched or fortified positions that involved naval and/or land forces.

  • DRRI-2 - N: Witnessed Someone Assaulted|DRRI1-N: Witnessed Someone Assaulted|DRRI1-N: Witnessed Someone Assaulted|DRRI1N07

    deployment risk and resilience inventory-2 (drri-2) since returning: i have witnessed someone being seriously assaulted or killed.

  • Homicide by Assault

    death of an individual by physical violence from another.

  • LEC-5 Standard Version - Assault With a Weapon: Happened|LEC01-Assault With a Weapon: Happened|LEC01-Assault With a Weapon: Happened|LEC0107A

    life events checklist for dsm-5 standard version (lec-5 standard version) assault with a weapon (for example, being shot, stabbed, threatened with a knife, gun, bomb): happened to me.

  • LEC-5 Standard Version - Assault With a Weapon: Job|LEC01-Assault With a Weapon: Job|LEC01-Assault With a Weapon: Job|LEC0107D

    life events checklist for dsm-5 standard version (lec-5 standard version) assault with a weapon (for example, being shot, stabbed, threatened with a knife, gun, bomb): part of my job.

  • LEC-5 Standard Version - Assault With a Weapon: Learned|LEC01-Assault With a Weapon: Learned|LEC01-Assault With a Weapon: Learned|LEC0107C

    life events checklist for dsm-5 standard version (lec-5 standard version) assault with a weapon (for example, being shot, stabbed, threatened with a knife, gun, bomb): learned about it.

  • LEC-5 Standard Version - Assault With a Weapon: Not Apply|LEC01-Assault With a Weapon: Not Apply|LEC01-Assault With a Weapon: Not Apply|LEC0107F

    life events checklist for dsm-5 standard version (lec-5 standard version) assault with a weapon (for example, being shot, stabbed, threatened with a knife, gun, bomb): doesn't apply.

  • LEC-5 Standard Version - Assault With a Weapon: Not Sure|LEC01-Assault With a Weapon: Not Sure|LEC01-Assault With a Weapon: Not Sure|LEC0107E

    life events checklist for dsm-5 standard version (lec-5 standard version) assault with a weapon (for example, being shot, stabbed, threatened with a knife, gun, bomb): not sure.

  • LEC-5 Standard Version - Assault With a Weapon: Witnessed|LEC01-Assault With a Weapon: Witnessed|LEC01-Assault With a Weapon: Witnessed|LEC0107B

    life events checklist for dsm-5 standard version (lec-5 standard version) assault with a weapon (for example, being shot, stabbed, threatened with a knife, gun, bomb): witnessed it.

  • LEC-5 Standard Version - Physical Assault: Happened|LEC01-Physical Assault: Happened|LEC01-Physical Assault: Happened|LEC0106A

    life events checklist for dsm-5 standard version (lec-5 standard version) physical assault (for example, being attacked, hit, slapped, kicked, beaten up): happened to me.

  • LEC-5 Standard Version - Physical Assault: Job|LEC01-Physical Assault: Job|LEC01-Physical Assault: Job|LEC0106D

    life events checklist for dsm-5 standard version (lec-5 standard version) physical assault (for example, being attacked, hit, slapped, kicked, beaten up): part of my job.

  • LEC-5 Standard Version - Physical Assault: Learned|LEC01-Physical Assault: Learned|LEC01-Physical Assault: Learned|LEC0106C

    life events checklist for dsm-5 standard version (lec-5 standard version) physical assault (for example, being attacked, hit, slapped, kicked, beaten up): learned about it.

  • LEC-5 Standard Version - Physical Assault: Not Apply|LEC01-Physical Assault: Not Apply|LEC01-Physical Assault: Not Apply|LEC0106F

    life events checklist for dsm-5 standard version (lec-5 standard version) physical assault (for example, being attacked, hit, slapped, kicked, beaten up): doesn't apply.

  • LEC-5 Standard Version - Physical Assault: Not Sure|LEC01-Physical Assault: Not Sure|LEC01-Physical Assault: Not Sure|LEC0106E

    life events checklist for dsm-5 standard version (lec-5 standard version) physical assault (for example, being attacked, hit, slapped, kicked, beaten up): not sure.

  • LEC-5 Standard Version - Physical Assault: Witnessed|LEC01-Physical Assault: Witnessed|LEC01-Physical Assault: Witnessed|LEC0106B

    life events checklist for dsm-5 standard version (lec-5 standard version) physical assault (for example, being attacked, hit, slapped, kicked, beaten up): witnessed it.

  • LEC-5 Standard Version - Sexual Assault: Happened|LEC01-Sexual Assault: Happened|LEC01-Sexual Assault: Happened|LEC0108A

    life events checklist for dsm-5 standard version (lec-5 standard version) sexual assault (rape, attempted rape, made to perform any type of sexual act through force or threat of harm): happened to me.

  • LEC-5 Standard Version - Sexual Assault: Job|LEC01-Sexual Assault: Job|LEC01-Sexual Assault: Job|LEC0108D

    life events checklist for dsm-5 standard version (lec-5 standard version) sexual assault (rape, attempted rape, made to perform any type of sexual act through force or threat of harm): part of my job.

  • LEC-5 Standard Version - Sexual Assault: Learned|LEC01-Sexual Assault: Learned|LEC01-Sexual Assault: Learned|LEC0108C

    life events checklist for dsm-5 standard version (lec-5 standard version) sexual assault (rape, attempted rape, made to perform any type of sexual act through force or threat of harm): learned about it.

  • LEC-5 Standard Version - Sexual Assault: Not Apply|LEC01-Sexual Assault: Not Apply|LEC01-Sexual Assault: Not Apply|LEC0108F

    life events checklist for dsm-5 standard version (lec-5 standard version) sexual assault (rape, attempted rape, made to perform any type of sexual act through force or threat of harm): doesn't apply.

  • LEC-5 Standard Version - Sexual Assault: Not Sure|LEC01-Sexual Assault: Not Sure|LEC01-Sexual Assault: Not Sure|LEC0108E

    life events checklist for dsm-5 standard version (lec-5 standard version) sexual assault (rape, attempted rape, made to perform any type of sexual act through force or threat of harm): not sure.

  • LEC-5 Standard Version - Sexual Assault: Witnessed|LEC01-Sexual Assault: Witnessed|LEC01-Sexual Assault: Witnessed|LEC0108B

    life events checklist for dsm-5 standard version (lec-5 standard version) sexual assault (rape, attempted rape, made to perform any type of sexual act through force or threat of harm): witnessed it.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Assassination (attempted) NOS
  • Homicide (attempted) NOS
  • Manslaughter (attempted) NOS
  • Murder (attempted) NOS

Index of External Cause of Injuries

References found for this diagnosis code in the External Cause of Injuries Index:

    • Assault(homicidal) (by) (in)
    • Assault(homicidal) (by) (in)
      • injury
    • Assault(homicidal) (by) (in)
      • violence
    • Assault(homicidal) (by) (in)
      • weapon
    • Assault(homicidal) (by) (in)
      • wound
    • Injury, injured(accidental(ly)) NOS
      • homicide

Convert Y09 to ICD-9-CM

  • ICD-9-CM Code: E968.9 - Assault NOS

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.