2024 ICD-10-CM Diagnosis Code Z57.9

Occupational exposure to unspecified risk factor

ICD-10-CM Code:
Z57.9
ICD-10 Code for:
Occupational exposure to unspecified risk factor
Is Billable?
Yes - Valid for Submission
Code Navigator:

Code Classification

  • Factors influencing health status and contact with health services
    (Z00–Z99)
    • Persons with potential health hazards related to socioeconomic and psychosocial circumstances
      (Z55-Z65)
      • Occupational exposure to risk factors
        (Z57)

Z57.9 is a billable diagnosis code used to specify a medical diagnosis of occupational exposure to unspecified risk factor. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

This code describes a circumstance which influences the patient's health status but not a current illness or injury. The code is unacceptable as a principal diagnosis.

Unspecified diagnosis codes like Z57.9 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:

  • Allergic contact sensitization of skin and skin-associated mucous membrane
  • Allergic contact urticaria
  • Allergic sensitization
  • Cheese-makers' asthma
  • Condition caused by work
  • Condition made worse by work
  • Contact urticaria
  • Contact urticaria
  • Disorder due to work-related activity accident
  • Exacerbation of constitutional dermatitis due to occupation
  • Exacerbation of constitutional dermatitis due to occupational exposure to contact allergen
  • Non-melanin pigmentation due to exogenous substance
  • Occupational abrasion of tooth
  • Occupational allergic contact sensitization
  • Occupational allergic contact urticaria
  • Occupational asthma
  • Occupational bronchitis
  • Occupational cancer of skin
  • Occupational contact dermatitis
  • Occupational contact dermatitis of hand
  • Occupational contact urticaria
  • Occupational contact urticaria
  • Occupational cutaneous vascular disorder
  • Occupational deafness
  • Occupational disorder of upper limb
  • Occupational dystonia
  • Occupational exposure to risk factor
  • Occupational injury
  • Occupational injury
  • Occupational injury
  • Occupational lung disease
  • Occupational non-allergic contact urticaria
  • Occupational non-melanin pigmentation due to exogenous substance
  • Occupational protein contact dermatitis
  • Occupational tattoo
  • Occupationally-acquired disorder of skin pigmentation
  • Protein contact dermatitis
  • Tattoo of skin
  • Traumatic deafness
  • Traumatic deafness, occupational

Clinical Classification

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:

  • Unacceptable principal diagnosis - There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)

Z57.9 is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.

CMS POA Indicator Options and Definitions

POA IndicatorReason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert Z57.9 to ICD-9-CM

  • ICD-9-CM Code: V62.1 - Adverse eff-work environ
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Occupational Health

Occupational health problems occur at work or because of the kind of work you do. These problems can include:

  • Cuts, fractures (broken bones), and sprains and strains
  • Loss of limbs
  • Repetitive motion disorders
  • Hearing problems caused by exposure to noise
  • Vision problems
  • Illness caused by breathing, touching, or swallowing unsafe substances
  • Illness caused by exposure to radiation
  • Exposure to germs in health care settings

Good job safety and prevention practices can reduce your risk of these problems. Try to stay fit, reduce stress, set up your work area properly, and use the right equipment and gear.


[Learn More in MedlinePlus]

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.