Although coding for long-term medications is not a difficult process, it often involves communicating with other physicians or specialists to obtain accurate information. While this clinical example focuses on Plaquenil, the concept works for any long-term medication. Crest plaquenil Chloroquine mechanism of action animation High Risk Factors Asian ethnicity Tamoxifen use Macular disease AMD, ERM, etc. Kidney renal or Liver hepatic disease To gather the clinical information required to screen for early detection of plaquenil-induced toxic maculopathy, the following diagnostic program could be considered, with emphasis on OCT testing first and visual field analysis second Spectral-domain OCT testing; Threshold visual field examination with a 10-2 testing strategy 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. This is the American ICD-10-CM version of M32.9 - other international versions of ICD-10 M32.9 may differ. Because Plaquenil does not have its own specific category, clinicians should use Z79.899—Other Long Term (Current) Drug Therapy. The ICD-10 section that covers long-term drug therapy is Z79, with many subsections and specific diagnosis codes. Plaquenil icd 10 Coding Long-term Medications, Plaquenil-Induced Toxic Maculopathy - Decision-Maker PLUS Ophthalmologic exam for plaquenil usePlaquenil visual field defectsHydroxychloroquine gastrointestinal bloatingCan i take metformin with hydrochloroquineHydroxychloroquine icd-10 ophthalmology Question What is the best way to code for Plaquenil toxicity observation first, if the patient was referred by the family doctor for a baseline exam prior to the start of treatment; second, if the patient returns six months after the start of treatment to assess ocular changes; and, third, if the patient returns six months later and shows adverse ocular changes? Coding for Plaquenil Toxicity Observation - CPT®, ICD-10, HCPCS. ICD-10-CM Diagnosis Code M32.9 Systemic lupus.. Coding exams for patients on high-risk medications - American.. Our office has been including a second diagnosis for the disease related to Plaquenil use. We aren't seeing denials using that method but from a coding standpoint I don't know if that is a 'more correct' coding or if we are just billing different insurances and getting different responses regardless of our using a second dx code. Systemic lupus erythematosus lupus is a chronic autoimmune disease that causes inflammation in various parts of the body. This blog provides some documentation guidelines and the ICD-10 codes used for reporting this condition. Answer When billing Plaquenil examinations, or any other high risk medication exams, it is appropriate to bill the systemic disease or any ocular manifestations as the primary diagnosis since many payers may not reimburse for the high-risk medication diagnosis as a stand-alone diagnosis. Testing services performed should have the high-risk.