Is ICD-10-CM code Z77.41 billable?

Yes, Z77.41 (Contact with and (suspected) exposure to low-level blast overpressure) is a billable ICD-10-CM diagnosis code, valid for reimbursement on HIPAA-covered transactions for FY2027.

Is Z77.41 exempt from POA reporting?

Yes, Z77.41 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 Z77.41 belong to?

Z77.41 belongs to Chapter 21 of the ICD-10-CM tabular list: Z00–Z99 (Factors Influencing Health Status and Contact with Health Services).

Is Z77.41 a new ICD-10-CM code for 2027?

Yes, Z77.41 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).

Z77.41BillableNon-CCNew for FY2027Unacceptable Principal POA Exempt

Contact with and (suspected) exposure to low-level blast overpressure

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

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Also indexed as: Contact, blast overpressure NOS, low-level; Exposure, blast overpressure NOS, low-level

Instructional notes

Includes: conditions that are coded here

Contact with and (suspected) exposure to LLB overpressure

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 Z77.41.

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 Z77.41.

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

any follow-up examination (Z08-Z09)

Where Z77.41 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
Z77.4 Contact with and (suspected) exposure to blast overpressure
Z77.41 Contact with and (suspected) exposure to low-level blast overpressure

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 Z77.9 (Other contact with and (suspected) exposures hazardous to health)