S91.0Non-Billable (Header)Open wound of ankleChild CodesS91.00Unspecified open wound of ankleS91.01Laceration without foreign body of ankleS91.02Laceration with foreign body of ankleS91.03Puncture wound without foreign body of ankleS91.04Puncture wound with foreign body of ankleS91.05Open bite of ankleCode Hierarchy└S91Open wound of ankle, foot and toes└S91.0Open wound of ankle└S91.0Open wound of ankle