Z86.59 – Personal history of other mental and behavioral disorders

ICD-10-CM 2027 diagnosis code · Persons with potential health hazards related to family and personal history and certain conditions influencing health status

Billable code

ICD-10-CM code Z86.59

Code: Z86.59 (claims format: Z8659)
Description: Personal history of other mental and behavioral disorders
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 21. Factors influencing health status and contact with health services (Z00-Z99)
Block: Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status
Parent codes: Z86 › Z86.5

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Z86 – Personal history of certain other diseases

Code first:

any follow-up examination after treatment (Z09)

Z86.5 – Personal history of mental and behavioral disorders

Applicable to:

Conditions classifiable to F40-F59

Block Z77-Z99

Code also:

any follow-up examination (Z08-Z09)

Index terms for Z86.59

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in Z86.5

Z86.51 – Personal history of combat and operational stress reactionBillable

Frequently asked questions

What is ICD-10 code Z86.59?

Z86.59 is the ICD-10-CM code for personal history of other mental and behavioral disorders, in the block Z77-Z99 (Persons with potential health hazards related to family and personal history and certain conditions influencing health status).

Is Z86.59 a billable code?

Yes. Z86.59 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Z86.59 belong to?

It belongs to category Z86 – Personal history of certain other diseases.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.