Is ICD-10-CM code Z77.33 billable?

Yes, Z77.33 (Contact with and (suspected) exposure to Agent Orange) is a billable ICD-10-CM diagnosis code, valid for reimbursement on HIPAA-covered transactions for FY2027.

Is Z77.33 exempt from POA reporting?

Yes, Z77.33 is on the CMS list of ICD-10-CM codes exempt from Present On Admission (POA) reporting for FY2027. Inpatient claims do not require a POA indicator for this code.

What chapter does ICD-10-CM code Z77.33 belong to?

Z77.33 belongs to Chapter 21 of the ICD-10-CM tabular list: Z00–Z99 (Factors Influencing Health Status and Contact with Health Services).

Is Z77.33 a new ICD-10-CM code for 2027?

Yes, Z77.33 was added or revised in the FY2027 ICD-10-CM update, effective October 1, 2026, as published by the Centers for Medicare and Medicaid Services (CMS).

Z77.33BillableNon-CCNew for FY2027Unacceptable Principal POA Exempt

Contact with and (suspected) exposure to Agent Orange

Factors Influencing Health Status and Contact with Health Services·Contact with and (suspected) exposure to war theater·subcategory·FY 2027

Poisoning: A poison is any substance that is harmful to your body. You might swallow it, inhale it, inject it, or absorb it through your skin. Any substance can be poisonous if too much is taken. Poisons can include:

Read more about poisoning on MedlinePlus · Source: MedlinePlus, National Library of Medicine

Also indexed as: Contact, Agent Orange; Exposure, Agent Orange

Instructional notes

Also applies, from Z77: Other contact with and (suspected) exposures hazardous to health

These notes sit on Z77 and apply to every code under it, including Z77.33.

Includes: conditions that are coded here

contact with and (suspected) exposures to potential hazards to health

Excludes2: not included here, code separately if applicable

contact with and (suspected) exposure to communicable diseases (Z20.-)
exposure to (parental) (environmental) tobacco smoke in the perinatal period (P96.81)
newborn affected by noxious substances transmitted via placenta or breast milk (P04.-)
occupational exposure to risk factors (Z57.-)
retained foreign body (Z18.-)
retained foreign body fully removed (Z87.821)
toxic effects of substances chiefly nonmedicinal as to source (T51-T65)

Also applies, from Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

These notes sit on Z77-Z99 and apply to every code under it, including Z77.33.

Code also: add a code for this too, order depends on the encounter

any follow-up examination (Z08-Z09)

Where Z77.33 sits

Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Z77 Other contact with and (suspected) exposures hazardous to health
Z77.3 Contact with and (suspected) exposure to war theater
Z77.33 Contact with and (suspected) exposure to Agent Orange

MS-DRGs

As the principal diagnosis, this code groups to these MS-DRGs (v44.0).

DRG 951 Other Factors Influencing Health Status

Code history

FY 2026: replaced Z77.39 (Contact with and (suspected) exposure to other war theater)