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Z91.4

Z91.4: Personal history of psychological trauma, not elsewhere classified

Non-billable headerICD-10-CM

Z91.4 is a non-billable header ICD-10-CM code for personal history of psychological trauma, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 inherited from the categories above Z91.4

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

Written on Z91: Personal risk factors, not elsewhere classified

  • contact with and (suspected) exposures hazardous to health (Z77.-)
  • exposure to pollution and other problems related to physical environment (Z77.1-)
  • female genital mutilation status (N90.81-)
  • occupational exposure to risk factors (Z57.-)
  • personal history of physical injury and trauma (Z87.81, Z87.82-)

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 Z91.4

3 child codes. Green means billable.

Other codes under Z91

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.