Z86 – Personal history of certain other diseases

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

Non-billable header

ICD-10-CM code Z86

Code: Z86 (claims format: Z86)
Description: Personal history of certain other diseases
Billable: No – use a more specific code below
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

Billable codes under Z86

Z86 is a header code and cannot be used on claims. Choose the most specific code:

Z86.0 – Personal history of in-situ and benign neoplasms and neoplasms of uncertain behaviorHeader (more codes below)
Z86.1 – Personal history of infectious and parasitic diseasesHeader (more codes below)
Z86.2 – Personal history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanismBillable
Z86.3 – Personal history of endocrine, nutritional and metabolic diseasesHeader (more codes below)
Z86.5 – Personal history of mental and behavioral disordersHeader (more codes below)
Z86.6 – Personal history of diseases of the nervous system and sense organsHeader (more codes below)
Z86.7 – Personal history of diseases of the circulatory systemHeader (more codes below)

Notes for Z86

Code first:

any follow-up examination after treatment (Z09)

Notes inherited from parent codes

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

Block Z77-Z99

Code also:

any follow-up examination (Z08-Z09)

Frequently asked questions

What is ICD-10 code Z86?

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

Is Z86 a billable code?

No. Z86 is a header code with more specific child codes; report one of the billable codes listed above.

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.