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M66.0: Rupture of popliteal cyst

A fluid-filled cavity in the hollow of your knee has burst.

The knee joint connects the thighbone (femur) to the lower leg. Around the knee joint is a joint capsule. The joint capsule contains synovial fluid so that the bones can glide by each other. There are also bursas in the knee. These bursas prevent tissue, for example muscles and tendons, from rubbing against each other.

Firstly, a cavity filled with fluid formed in the hollow of your knee. Such a cavity can form in the joint capsule or in a bursa in the knee. It can occur because of an inflammation or after an injury, for example.

The cavity in the hollow of your knee then burst. When a cavity in the hollow of your knee bursts, the knee may be painful.

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

Note

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.

Source

Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).