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M12.21: Villonodular synovitis (pigmented) Shoulder region

New tissue has formed in a joint or tendon sheath in your shoulder or collarbone.

There are 3 bones and 2 joints in the shoulder area. The bones are the collarbone, the shoulder blade, and the humerus. The shoulder joint connects the humerus to the shoulder blade. A second joint connects the shoulder blade to the collarbone. The collarbone is also connected to the sternum by another joint.

A tendon sheath is a covering for the tendon. It cushions the tendon and contains a small amount of fluid. This reduces friction between the tendon and its surroundings. Tendon sheaths and joints have a thin membrane lining inside. With this disorder, the cells in this thin membrane multiply. This makes the tissue thicker. The new tissue can supplant the healthy tissue, or even destroy it.

This may cause pain or make the joint less mobile.

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).