Question: Our patient injected too much insulin and experienced dizziness and blurred vision. Which ICD-9 code(s) should we report for this? --Answers to You Be the Coder and Reader Questions reviewed by Kent J. Moore, manager of Health Care Financing and Delivery Systems for the American Academy of Family Physicians in Leawood, Kan.
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Answer: Because the patient took the wrong dosage, your primary ICD-9 code will be the poisoning code for the drug taken, followed by symptom codes. Because the diabetic patient injected the wrong insulin dose, you should refer to ICD-9's -Table of Drugs and Chemicals,- find insulin and report the code that appears in the -poisoning- column--962.3 (Poisoning by insulins and antidiabetic agents).
You should then report the patient's symptoms. For example, if the patient presented with light-headedness and blurred vision after taking the insulin, you should report 780.4 (Dizziness and giddiness) and 368.8 (Other specified visual disturbances, blurred vision NOS).