One such commonly used medication for dermatologic and rheumatologic inflammatory conditions is hydroxychloroquine (Plaquenil), a chloroquine derivative. It is used to treat many diseases including malaria, rheumatoid arthritis and systemic lupus erythematosus. Purpose of plaquenil in lupus Can erythromycin interact with plaquenil Plaquenil and biofilm Aug 06, 2014 Hydroxychloroquine, sold under the brand name Plaquenil Sanofi-Aventis, is an antimalarial drug that has gained widespread use in treating various autoimmune diseases, including systemic lupus erythematosus and rheumatoid arthritis. 1 By some estimates, more than 150,000 patients are on long-term therapy with this medication in America alone. 2 Retinal toxicity associated with HCQ use is relatively rare, estimated at 1 percent after five years and rising with continued therapy. 3 However. Oct 01, 2019 Z79.899 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 Z79.899 became effective on October 1, 2019. This is the American ICD-10-CM version of Z79.899 - other international versions of ICD-10 Z79.899 may differ. ICD-9-CM Diagnosis Code 362.55 Toxic maculopathy ICD-9-CM 362.55 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 362.55 should only be used for claims with a date of service on or before September 30, 2015. It is imperative that patients and physicians are aware of and watch for this drug’s ocular side effects. Retinal toxicity from hydroxychloroquine is rare, but even if the medication is discontinued, vision loss may be irreversible and may continue to progress. Plaquenil toxicity icd9 ICD-10-CM Diagnosis Code T37.8X5A Adverse effect of., ICD-10-CM Diagnosis Code Z79.899 Other long term. Is there a generic drug for plaquenilImuran and plaquenil Question Which code diagnosis and CPT should I use for a baseline Plaquenil exam?Ohio Subscriber Answer Plaquenil is the trade name for hydroxychloroquine, a medication used to treat rheumatoid arthritis and lupus. Reader Question Plaquenil Exam. ICD-9-CM Diagnosis Code 362.55 Toxic maculopathy. ICD-10-CM Code H35.389 - Toxic maculopathy, unspecified eye. Diagnosis Hydroxychloroquine-induced retinal toxicity Discussion. 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. Researchers suggest that one central point in both eyes indicates toxicity and one should have a low threshold with regards to any defects. 19 The misinterpreted visual field defect using the larger testing strategies could potentially delay the diagnosis of Plaquenil toxicity resulting in irreversible vision loss. Due to the possibility of. ICD-9-CM E931.4 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, E931.4 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code or codes.