AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2023 Issue 1; Correction Notices

Underdosing of Amlodipine

The answer published in Coding Clinic, First Quarter 2022, page 36, about underdosing of Amlodipine was incorrect. Assign code T46.1X6A, Underdosing of calcium-channel blockers, initial encounter, rather than code T46.5X6A, Underdosing of other antihypertensive drugs, initial encounter, for underdosing of Amlodipine. Although Amlodipine may be prescribed to treat hypertension, the drug class is calcium channel blocker. ...

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