ICD-10-CM > Z00-Z99 > Z77-Z99 > Z79 > Z79.6 > Z79.62 > Z79.624 Z79.624 Long term (current) use of inhibitors of nucleotide synthesis Billable/Specific Copy Code Copy Description Applicable To Long term (current) use of azathioprineLong term (current) use of mycophenolateLong term (current) use of purine synthesis (IMDH) inhibitors