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Q75.041

Billable

Lambdoid craniosynostosis, unilateral

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

What This Code Means

A birth defect where the lambdoid suture (the seam at the back of the skull) fuses prematurely on one side, causing asymmetrical back head shape.

Coding Tips

  • •Verify unilateral involvement is documented; lambdoid synostosis causes posterior plagiocephaly
  • •Distinguish from bilateral lambdoid (Q75.042) which is rare and affects both sides

Code Hierarchy

└Q75Other congenital malformations of skull and face bones└Q75.0Craniosynostosis└Q75.04Lambdoid craniosynostosis└Q75.041Lambdoid craniosynostosis, unilateral
└Q75.041Lambdoid craniosynostosis, unilateral

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