ICD-10-CM > Z00-Z99 > Z77-Z99 > Z92 > Z92.8 > Z92.85 Z92.85 Personal history of cellular therapy Non-Billable/Non-Specific Type 2 Excludes personal history of immune checkpoint inhibitor therapy (Z92.26) Codes Z92.850Personal history of Chimeric Antigen Receptor T-cell therapyZ92.858Personal history of other cellular therapyZ92.859Personal history of cellular therapy, unspecified