Chronic periodontitis, generalized, severe

This code signifies a widespread, long-standing inflammatory disease affecting the supporting structures of the teeth, characterized by significant attachment loss and bone destruction. It represents the most advanced stage of generalized chronic periodontitis, indicating extensive tissue damage.

Apply this code when documentation clearly indicates chronic periodontitis affecting most or all teeth, with severe clinical attachment loss (typically ≥5mm) and extensive radiographic bone loss. This diagnosis is typically made by a dentist or periodontist based on comprehensive periodontal charting and radiographic findings.

• Ensure documentation specifies "generalized" and "severe" to support this code.
• Distinguish from localized chronic periodontitis (K05.31-) and aggressive periodontitis (K05.2-).
• Always review the full periodontal examination findings, including probing depths, attachment loss, and bone loss percentages, to confirm severity.