Z91.A4
Z91.A4: Caregiver's other noncompliance with patient's medication regimen
Non-billable headerICD-10-CM
Z91.A4 is a non-billable header ICD-10-CM code for caregiver's other noncompliance with patient's medication regimen. It cannot be billed on its own: choose one of the more specific child codes below.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Caregiver's underdosing of patient's medication NOS
- Caregiver's underdosing with patient's medication NOS
Excludes2 inherited from the categories above Z91.A4
Not part of this code, but both may be coded when both are present.
Written on Z91: Personal risk factors, not elsewhere classified
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 Z91.A4
2 child codes. Green means billable.
Other codes under Z91.A
- Z91.A1Caregiver's noncompliance with patient's dietary regimen
- Z91.A2Caregiver's intentional underdosing of patient's medication regimen
- Z91.A3Caregiver's unintentional underdosing of patient's medication regimen
- Z91.A5Caregiver's noncompliance with patient's renal dialysis
- Z91.A9Caregiver's noncompliance with patient's other medical treatment and regimen