2027 ICD-10-CM Diagnosis Code Z57.1Occupational exposure to radiation

ICD-10-CM Codes›Z00–Z99›Z55-Z65›Z57

ICD-10-CM Z57.1
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z57.1 is a billable ICD-10-CM diagnosis code for occupational exposure to radiation. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as effects of occupational exposure to radiation. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Socioeconomic/psychosocial factors.

Code Identity

ICD-10-CM Code
Z57.1
Billable Status
Yes — Valid for Submission
Code Describes
Occupational exposure to radiation
Short Description
Occupational exposure to radiation
Same as the full description in the CMS dataset.
Parent Code
Z57
Occupational exposure to risk factors

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ55-Z65Persons with potential health hazards related to socioeconomic and psychosocial circumstances
CategoryZ57Occupational exposure to risk factors
This CodeZ57.1Occupational exposure to radiation

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z57.1.

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)Billing

Z57.1 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Effects of occupational exposure to radiation
  • Occupational exposure to radiation
  • Occupational injury

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z57.1: its own notes plus those printed at Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z57.1, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming Z57.1: they are not reported together with it, unless the two conditions are unrelated.

  • Z92.3 Personal history of irradiation
    occupational exposure to radiation (Z57.1)
  • Z13.88 Encounter for screening for disorder due to exposure to contaminants
    those exposed to contaminants without suspected disorders (Z57.-, Z77.-) names Z57.-, which includes this code

Excludes2 4

These codes carry an Excludes2 note naming Z57.1: its condition is not part of those codes, and both may be reported when the patient has both.

  • Z56 Problems related to employment and unemployment
    occupational exposure to risk factors (Z57.-) names Z57.-, which includes this code
  • Z58 Problems related to physical environment
    occupational exposure (Z57.-) names Z57.-, which includes this code
  • Z77 Other contact with and (suspected) exposures hazardous to health
    occupational exposure to risk factors (Z57.-) names Z57.-, which includes this code
  • Z91 Personal risk factors, not elsewhere classified
    occupational exposure to risk factors (Z57.-) names Z57.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index; each main term links to its index entry.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC019
Socioeconomic/psychosocial factors
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Occupational Health

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

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z57.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V62.1 Adverse eff-work environ
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z57.1Overview

What is the ICD-10 code for occupational exposure to radiation?

The ICD-10-CM code for occupational exposure to radiation is Z57.1 (sometimes written as Z571). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Z57.1 (Occupational exposure to risk factors) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report occupational exposure to radiation on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z57.1 group to?

On inpatient claims, occupational exposure to radiation maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.

Can Z57.1 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because occupational exposure to radiation describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z57.1 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for occupational exposure to radiation on inpatient claims. The code appears in the Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65) range of the CMS exempt list.