Is K05.21 a billable code?
No. K05.21 is a header code that groups 4 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
K05.21: Aggressive periodontitis, localized
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
K05.21 groups related diagnoses under aggressive periodontitis, localized. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under K05.21
- K05.211Aggressive periodontitis, localized, slight
- K05.212Aggressive periodontitis, localized, moderate
- K05.213Aggressive periodontitis, localized, severe
- K05.219Aggressive periodontitis, localized, unspecified severity
Other codes in K05.2 Aggressive periodontitis
K05.21 questions
What does K05.21 mean?
K05.21 is the ICD-10-CM code for Aggressive periodontitis, localized. It is in chapter 11, Diseases of the digestive system (K00-K95).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.