Z86.1Personal history of infectious and parasitic diseases

Z86.1 is the ICD-10-CM diagnosis code for personal history of infectious and parasitic diseases. It belongs to category Z86 (personal history of certain other diseases), 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 8 subcodes must be used instead.

Within Z86 (personal history of certain other diseases), Z86.1 is specifically for personal history of infectious and parasitic diseases. Related codes cover in-situ and benign neoplasms and neoplasms of uncertain behavior (Z86.0), diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (Z86.2), endocrine, nutritional and metabolic diseases (Z86.3), mental and behavioral disorders (Z86.5), diseases of the nervous system and sense organs (Z86.6) and diseases of the circulatory system (Z86.7).

To report this condition, pick the subcode that matches the documentation: Z86.11 (tuberculosis), Z86.12 (poliomyelitis), Z86.13 (malaria), Z86.14 (infection), Z86.15 (infection), Z86.16 (COVID-19), Z86.17 (infection) and Z86.19 (diseases).

Don't report Z86.1 together with the conditions in its Excludes1 note: personal history of infectious diseases specific to a body system and sequelae of infectious and parasitic diseases (B90-B94).

Code first: any follow-up examination after treatment (Z09).

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