If a diagnosis in the ICD-10 Index is followed by at least five designated digits,it is not necessary to check the Tabular List when assigning a code.

Question

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It is important to verify the code in the Tabular List even if the diagnosis in the Index has five digits or more. The Tabular List provides additional instructions and specificity for assigning the correct code. Simply relying on the Index can lead to inaccurate or incomplete coding.

If a Diagnosis in the ICD-10 Index Is Followed by at Least