Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.
Excludes1 (never code together)
post COVID-19 condition (U09.9)
Applies from Z86 Personal history of certain other diseases
Code first
any follow-up examination after treatment (Z09)
Applies from Z86.1 Personal history of infectious and parasitic diseases
Applicable to
Conditions classifiable to A00-B89, B99
Excludes1 (never code together)
personal history of infectious diseases specific to a body system
sequelae of infectious and parasitic diseases (B90-B94)
MS-DRG index
Defines the logic of DRG(s) 951 in MDC 23.
Medicare Code Edits (MCE v43.1 (April 2026))
Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.
Code annotations containing back-references to Z86.16
Back-references to Z86.16
Use Additional: M35.81 Multisystem inflammatory syndrome ("personal history of COVID-19 (Z86.16)")
Back-references to Z86.1
Type 2 Excludes: Z20 Contact with and (suspected) exposure to communicable diseases ("personal history of infectious and parasitic diseases (Z86.1-)")
Back-references to Z86
Use Additional: Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm ("code to identify any applicable history of disease code (Z86.-, Z87.-)")
Diagnosis Index entries for Z86.16
COVID-19 › history of (personal)
History › personal (of) › coronavirus (disease) (novel) 2019
History › personal (of) › COVID-19
History › personal (of) › disease or disorder (of) › infectious › coronavirus (disease) (novel) 2019
History › personal (of) › disease or disorder (of) › infectious › COVID-19
History › personal (of) › disease or disorder (of) › infectious › SARS-CoV-2
History › personal (of) › infection NEC › coronavirus (disease) (novel) 2019
History › personal (of) › infection NEC › COVID-19
History › personal (of) › infection NEC › SARS-CoV-2