K05.3: Chronic periodontitis

Your periodontal ligament has been inflamed for a considerable time.

The tooth is anchored firmly in the jawbone by the periodontal ligament. This ligament includes, among other things, the outermost layer of the tooth root and the gums. The periodontal ligament also includes the hole in the jawbone in which the tooth is located.

The periodontal ligament can become inflamed for instance if you do not clean your teeth properly. In that case, the inflammation develops due to the bacteria found in plaque. The periodontal ligament can also become inflamed as a result of other diseases.

It is common for the gums to be inflamed initially before other parts of the periodontal ligament are inflamed. If the gums are inflamed, they can be reddened and bleed more rapidly.

If the periodontal ligament is inflamed for a long time, the gums may retract from the tooth necks. The teeth may then also become loose. Every tooth consists of 3 sections: the crown, the tooth neck (cervix) and the tooth root. The crown is the visible part of the tooth. The tooth neck is covered by the gums. The tooth root keeps the tooth in the jawbone.

Additional indicator

On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.

  • G: Confirmed diagnosis
  • V: Tentative diagnosis
  • Z: Condition after
  • A: Excluded diagnosis
  • L: Left
  • R: Right
  • B: Both sides

Further information


This information is not intended for self-diagnosis and does not replace professional medical advice from a doctor. If you find an ICD code on a personal medical document, please also note the additional indicator used for diagnostic confidence.
Your doctor will assist you with any health-related questions and explain the ICD diagnosis code to you in a direct consultation if necessary.


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