Z51.8 Encounter for other specified aftercareNon-billable header with 2 child codes.
Z51.81 Encounter for therapeutic drug level monitoringZ51.89 Encounter for other specified aftercareZ08 Encounter for follow-up examination after completed treatment for malignant neoplasm ("aftercare following medical care (Z43-Z49, Z51)")Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm ("aftercare following medical care (Z43-Z49, Z51)")Z98 Other postprocedural states ("aftercare (Z43-Z49, Z51)")Z51.1 Encounter for antineoplastic chemotherapy and immunotherapyZ51.11 Encounter for antineoplastic chemotherapyZ51.12 Encounter for antineoplastic immunotherapyZ51.5 Encounter for palliative careZ51.6 Encounter for desensitization to allergensZ51.8 Encounter for other specified aftercare (this code)Z51.81 Encounter for therapeutic drug level monitoringZ51.89 Encounter for other specified aftercareZ51.A Encounter for sepsis aftercare