Testing services performed should have the high-risk medication diagnosis as the primary diagnosis since that is the reason for the testing.. Atients taking Plaquenil (hydroxychloroquine, Sanofi-Aventis) on a long-term basis may leave you scratching your head when it comes to coding the patient encounters. Chloroquine stock Plaquenil for lupus dosage Systemic lupus erythematosus, unspecified 2016 2017 2018 2019 2020 Billable/Specific Code M32.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2020 edition of ICD-10-CM M32.9 became effective on October 1, 2019. Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. The ICD-10 section that covers long-term drug therapy is Z79, with many subsections and specific diagnosis codes. Because Plaquenil does not have its own specific category, clinicians should use Z79.899—Other Long Term Current Drug Therapy. But getting the right code is just one step in the process of correctly documenting the encounter. While this clinical example focuses on Plaquenil, the concept works for any long-term medication. Although coding for long-term medications is not a difficult process, it often involves communicating with other physicians or specialists to obtain accurate information. Icd10 plaquenil therapy ICD-10-CM Diagnosis Code H35.389 Toxic maculopathy., Hydroxychloroquine Plaquenil Plaquenil helping intestinal inflammationChloroquine eye exam Question What is an appropriate ICD-10 code for a patient who has completed their Plaquenil treatment? Answer Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm may be appropriate, but it really depends on your payer. Not every MAC that has an LCD policy allows for this diagnosis. ICD-10 Code for Completion of Plaquenil Treatment.. Coding Long-term Medications. ICD-10-CM Code Z79.899 - Other long term current drug therapy. Z79 is a non-billable ICD-10 code for Long term current drug therapy. It should not be used for HIPAA-covered transactions as a more specific code is available to choose from below. Other long term current drug therapy. Z79.899 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Chloroquine CQ and hydroxychloroquine Plaquenil HCQ have been used for many years, initially for the treatment of malaria but now more commonly for the treatment of inflammatory diseases such as rheumatoid arthritis and lupus 1. It is now considered for new disease applications in diabetes, heart disease and adjunct cancer therapies 2.