ICD-10-CM FY2027 diagnosis code

Z86.51: Personal history of combat and operational stress reaction

Billable codeValid for dates of service October 1, 2026 to September 30, 2027

Z86.51 is a billable ICD-10-CM diagnosis code for personal history of combat and operational stress reaction. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.

Other codes in Z86.5 Personal history of mental and behavioral disorders

Z86.51 questions

Is Z86.51 a billable code?

Yes. Z86.51 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.

What does Z86.51 mean?

Z86.51 is the ICD-10-CM code for Personal history of combat and operational stress reaction. It is in chapter 22, Factors influencing health status and contact with health services (Z00-Z99).

Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.