Z86.15 Personal history of latent tuberculosis infection

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

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 Z86.15

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 Z86.15

• History › personal (of) › infection NEC › latent tuberculosis
• History › personal (of) › latent tuberculosis infection
• History › personal (of) › tuberculosis, latent infection

Nearby codes

• Z86.1 Personal history of infectious and parasitic diseases
• Z86.11 Personal history of tuberculosis
• Z86.12 Personal history of poliomyelitis
• Z86.13 Personal history of malaria
• Z86.14 Personal history of Methicillin resistant Staphylococcus aureus infection
• Z86.15 Personal history of latent tuberculosis infection (this code)
• Z86.16 Personal history of COVID-19
• Z86.19 Personal history of other infectious and parasitic diseases
• Z86.2 Personal history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
• Z86.3 Personal history of endocrine, nutritional and metabolic diseases
• Z86.31 Personal history of diabetic foot ulcer