The purpose of this study is to evaluate the effect of cytochrome P450 3A4 inhibition by Itraconazole on the pharmacokinetics of BMS-986256.

For more information regarding Bristol-Myers Squibb Clinical Trial participation, please visit www.BMSStudyConnect.com

Inclusion Criteria:

• Healthy participant, defined as having no clinically significant active or ongoing medical condition, physical examination abnormality, abnormal ECG finding, and abnormal clinical laboratory determinations that in the opinion of the Investigator would compromise the conduct, results, or interpretation of the study findings
• A negative QuantiFERON®-TB Gold test result at screening or documentation of a negative result within 3 months of the screening visit
• Weight greater than or equal to (>=) 50 kilogram (kg) and body mass index between 18.0 and 32.0 kilogram per meter square (kg/m^2) inclusive at screening

Exclusion Criteria:

• Prior exposure to BMS-986256
• Previous investigational drug or placebo exposure within 6 weeks before nonbiologic study drug administration or 12 weeks before biologic study drug administration
• History or presence of malignancy including hematological malignancies. However, participants with a history of basal cell or squamous cell carcinoma that has been completely and successfully treated with no evidence of recurrence may not be excluded, at the discretion of the investigator

Other protocol defined inclusion/exclusion criteria could apply