PlentyofroomforexpansioninICD-103ICD-9-CMDiagnosisCodesAre3–5digits;•Thefirstdigitisalpha(EorV)ornumeric(alphacharactersarenotcasesensitive);•Digits2–5arenumeric;andAdecimalisusedafterthethirdcharacter. Examples: •496–Chronicairwayobstruction,notelsewhereclassified(NEC);•511.9–Unspecified...