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O66.1

Billable

Obstructed labor due to locked twins

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

What This Code Means

Labor obstruction in a twin pregnancy where the babies become physically locked together, preventing normal delivery.

Coding Tips

  • •Confirm that locked twins are documented; this is a rare condition requiring specific clinical findings
  • •Document which twin is in the locked position and any interventions performed

Code Hierarchy

└O66Other obstructed labor└O66.1Obstructed labor due to locked twins
└O66.1Obstructed labor due to locked twins

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