ICD-10-CM > K00-K95 > K00-K14 > K05 > K05.2 K05.2 Aggressive periodontitis Non-Billable/Non-Specific Applicable To Acute pericoronitis Type 1 Excludes acute apical periodontitis (K04.4)periapical abscess (K04.7)periapical abscess with sinus (K04.6) Codes K05.20Aggressive periodontitis, unspecifiedK05.21Aggressive periodontitis, localizedK05.211Aggressive periodontitis, localized, slightK05.212Aggressive periodontitis, localized, moderateK05.213Aggressive periodontitis, localized, severeK05.219Aggressive periodontitis, localized, unspecified severityK05.22Aggressive periodontitis, generalizedK05.221Aggressive periodontitis, generalized, slightK05.222Aggressive periodontitis, generalized, moderateK05.223Aggressive periodontitis, generalized, severeK05.229Aggressive periodontitis, generalized, unspecified severity