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Q78.1

Billable

Polyostotic fibrous dysplasia

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A genetic condition where fibrous tissue abnormally replaces bone in multiple areas of the skeleton, causing deformities and bone weakness.

Coding Tips

  • •Document the extent and location of fibrous dysplasia involvement for clinical clarity
  • •Note any endocrine complications (like precocious puberty) that may require separate coding

Code Hierarchy

└Q78Other osteochondrodysplasias└Q78.1Polyostotic fibrous dysplasia
└Q78.1Polyostotic fibrous dysplasia

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