Pattern of Retinopathy: Although the locus of toxic damage is parafoveal in many eyes, Asian patients often show an extramacular pattern of damage. Dose: We recommend a maximum daily HCQ use of 5.0 mg/kg real weight, which correlates better with risk than ideal weight. Eye retinal toxicity dosage hydroxychloroquine Plaquenil 2 mg Plaquenil or methotrexate ICD-9-CM V80.2 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, V80.2 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. Question How should we code exams for patients on high-risk medications in ICD-10? Answer When the doctor finds no pathology, code the systemic disease, such as L93.0 Lupus or M06.09 Rheumatoid arthritis. ICD-10's Z79.899 Other long term current drug therapy should be linked to any tests performed. Reader Question Coding for Plaquenil Toxicity Observation; Ophthalmology Coding Alert. Reader Question Coding for Plaquenil Toxicity Observation. Published on Wed Sep 01, 1999 "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. Risk of Toxicity: The risk of toxicity is dependent on daily dose and duration of use. There are no similar demographic data for CQ, but dose comparisons in older literature suggest using 2.3 mg/kg real weight. Icd 10 plaquenil screening ICD-10-CM Diagnosis Code Z79.899 Other long term., Coding exams for patients on high-risk medications. Plaquenil for amyopathic dermatomyositis For the diagnosis code, use V58.69 long-term current use; of other medications for the primary diagnosis, and then the diagnosis code which applies to the systemic condition for which the patient is taking Plaquenil e.g. 714.2, other rheumatoid arthritis with visceral systemic involvement. Coding for Plaquenil Toxicity Observation - CPT®, ICD-10, HCPCS. Coding for Plaquenil Toxicity Observation - CPT®, ICD-10.. Z01.00 vs. Z13.5 Medical Billing and Coding Forum - AAPC. 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. T37.8X5A is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Short description Adverse effect of systemic anti-infect/parasit, init The 2020 edition of ICD-10-CM T37.8X5A became effective on October 1, 2019. ICD-10's Z79.899 Other long term current drug therapy should be linked to any tests performed. You may also add it to the exam for supporting documentation.