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

Z91.4 is the ICD-10-CM diagnosis code for personal history of psychological trauma, not elsewhere classified. It belongs to category Z91 (personal risk factors, not elsewhere classified), block Z77-Z99 (persons with potential health hazards related to family and personal history and certain conditions influencing health status) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within Z91 (personal risk factors, not elsewhere classified), Z91.4 is specifically for personal history of psychological trauma, not elsewhere classified. Related codes cover allergy status, other than to drugs and biological substances (Z91.0), patient's noncompliance with medical treatment and regimen (Z91.1), personal history of self-harm (Z91.5), other specified personal risk factors, not elsewhere classified (Z91.8), Caregiver's noncompliance with patient's medical treatment and regimen (Z91.A) and personal risk factor of exposure to diethylstilbestrol (Z91.B).

To report this condition, pick the subcode that matches the documentation: Z91.41 (abuse), Z91.42 (exploitation) and Z91.49 (classified).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.