{"code":"Z79.62","type":"code","title":"Long term (current) use of immunosuppressant","codeAlso":["any therapeutic drug level monitoring (Z51.81)","any follow-up examination (Z08-Z09)"],"includes":["long term (current) drug use for prophylactic purposes"],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["long term (current) use of steroids (Z79.5-)","long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-)","drug abuse and dependence (F11-F19)","drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)"],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["Z79.620","Z79.621","Z79.622","Z79.623","Z79.624"],"inclusionTerms":[],"sibling_titles":{"code":"Z79.624","title":"Long term (current) use of inhibitors of nucleotide synthesis","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Long term (current) use of immunosuppressant is a non-billable ICD-10-CM category code (Z79.62). A more specific billable subcode must be selected for claims submission. Includes: long term (current) drug use for prophylactic purposes. Excludes2 (not included here): long term (current) use of steroids (Z79.5-); long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.","officialDefinition":"Long term (current) use of immunosuppressant is a non-billable ICD-10-CM category code (Z79.62). A more specific billable subcode must be selected for claims submission. Includes: long term (current) drug use for prophylactic purposes. Excludes2 (not included here): long term (current) use of steroids (Z79.5-); long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-); drug abuse and dependence (F11-F19); drug use complicating pregnancy, childbirth, and the puerperium (O99.32-). Code also: any therapeutic drug level monitoring (Z51.81); any follow-up examination (Z08-Z09).","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":"","noteProvenance":{"drug abuse and dependence (F11-F19)":"Z79","drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)":"Z79","long term (current) drug use for prophylactic purposes":"Z79","long term (current) use of steroids (Z79.5-)":"Z79.6","long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-)":"Z79.6"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}