Z86.1UpcomingCategory · further specificity required

Personal history of infectious and parasitic diseases

Code-level instructions

Excludes 1

personal history of infectious diseases specific to a body system
sequelae of infectious and parasitic diseases (B90-B94)

Z86 · Inherited instructions

Code first

any follow-up examination after treatment (Z09)

Z77-Z99 · Inherited instructions

Code also

any follow-up examination (Z08-Z09)

More specific codes

Z86.11Personal history of tuberculosis Z86.12Personal history of poliomyelitis Z86.13Personal history of malaria Z86.14Personal history of Methicillin resistant Staphylococcus aureus infection Z86.15Personal history of latent tuberculosis infection Z86.16Personal history of COVID-19 Z86.17Personal history of Clostridioides difficile infection Z86.19Personal history of other infectious and parasitic diseases

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

First observed · 2015-10-01

Code history

No recorded change since first observation

ChangedUnchanged

FY2016

Effective from 2015-10-01

First observed

Personal history of infectious and parasitic diseases

Category — select a more specific code

CDC/NCHS · FY2016

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	No tabular change
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Inclusion terms

Conditions classifiable to A00-B89, B99

Excludes 1

personal history of infectious diseases specific to a body system
sequelae of infectious and parasitic diseases (B90-B94)

Inherited instructions

Z86 · Personal history of certain other diseases

Code first

any follow-up examination after treatment (Z09)

Chapters 21 · Factors influencing health status and contact with health services (Z00-Z99)

Note

Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Z77-Z99 · Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

Code also

any follow-up examination (Z08-Z09)

More specific codes

Z86.11Personal history of tuberculosisBillable / specific Z86.12Personal history of poliomyelitisBillable / specific Z86.13Personal history of malariaBillable / specific Z86.14Personal history of Methicillin resistant Staphylococcus aureus infectionBillable / specific Z86.15Personal history of latent tuberculosis infectionBillable / specific Z86.16Personal history of COVID-19Billable / specific Z86.17Personal history of Clostridioides difficile infectionBillable / specific Z86.19Personal history of other infectious and parasitic diseasesBillable / specific

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
Z86.0	Personal history of in-situ and benign neoplasms and neoplasms of uncertain behavior	Category · further specificity required
Z86.2	Personal history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism	Billable / specific
Z86.3	Personal history of endocrine, nutritional and metabolic diseases	Category · further specificity required
Z86.5	Personal history of mental and behavioral disorders	Category · further specificity required
Z86.6	Personal history of diseases of the nervous system and sense organs	Category · further specificity required
Z86.7	Personal history of diseases of the circulatory system	Category · further specificity required

Official titles and instructions are preserved in their source language. Official sources ↗

References from other codes (1)

Z20 · Contact with and (suspected) exposure to communicable diseases

Excludes 2 · personal history of infectious and parasitic diseases (Z86.1-)

Z86.1UpcomingCategory · further specificity required

Personal history of infectious and parasitic diseases

Code-level instructions

Excludes 1

personal history of infectious diseases specific to a body system
sequelae of infectious and parasitic diseases (B90-B94)

Z86 · Inherited instructions

Code first

any follow-up examination after treatment (Z09)

Z77-Z99 · Inherited instructions

Code also

any follow-up examination (Z08-Z09)

More specific codes

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Official coding guidelines → · CMS ↗

First observed · 2015-10-01

Code history

No recorded change since first observation

ChangedUnchanged

FY2016

Effective from 2015-10-01

First observed

Personal history of infectious and parasitic diseases

Category — select a more specific code

CDC/NCHS · FY2016

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	No tabular change
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Inclusion terms

Conditions classifiable to A00-B89, B99

Excludes 1

personal history of infectious diseases specific to a body system
sequelae of infectious and parasitic diseases (B90-B94)

Inherited instructions

Z86 · Personal history of certain other diseases

Code first

any follow-up examination after treatment (Z09)

Chapters 21 · Factors influencing health status and contact with health services (Z00-Z99)

Note

Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Z77-Z99 · Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

Code also

any follow-up examination (Z08-Z09)

More specific codes

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
Z86.0	Personal history of in-situ and benign neoplasms and neoplasms of uncertain behavior	Category · further specificity required
Z86.2	Personal history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism	Billable / specific
Z86.3	Personal history of endocrine, nutritional and metabolic diseases	Category · further specificity required
Z86.5	Personal history of mental and behavioral disorders	Category · further specificity required
Z86.6	Personal history of diseases of the nervous system and sense organs	Category · further specificity required
Z86.7	Personal history of diseases of the circulatory system	Category · further specificity required

Official titles and instructions are preserved in their source language. Official sources ↗

References from other codes (1)

Z20 · Contact with and (suspected) exposure to communicable diseases

Excludes 2 · personal history of infectious and parasitic diseases (Z86.1-)