AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2016 Issue 4; ICD-10-CM NEW/REVISED CODES

Bunion and Bunionette

Category M21.6, Other acquired deformities of ankle and foot, has been expanded to specifically identify bunion of right foot (M21.611), bunion of left foot (M21.612), and bunion of unspecified foot (M21.619). Prior to this change, bunion was an inclusion term at code M20.1, Hallux valgus (acquired). In addition, a new subcategory and new codes have been created to describe bunionette (tailor’s bunion). The new codes include bunionette of right foot (M21.621), bunionette of left foot (M21.622), and bunionette of unspecified foot (M21.629). Bunionette was previously not uniquely identified in ICD-10-CM...

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