Z77.4

Z77.4: Contact with and (suspected) exposure to blast overpressure

Non-billable headerICD-10-CM

Z77.4 is a non-billable header ICD-10-CM code for contact with and (suspected) exposure to blast overpressure. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 inherited from the categories above Z77.4

Not part of this code, but both may be coded when both are present.

Written on Z77: Other contact with and (suspected) exposures hazardous to health

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)

Other codes that can never be billed with Z77.4

Their own Excludes1 notes name this code, so the conflict is not listed above.

Z13.88Encounter for screening for disorder due to exposure to contaminants
Z03Encounter for medical observation for suspected diseases and conditions ruled out

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Z77.4

4 child codes. Green means billable.