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R29.0

Billable

Tetany

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

What This Code Means

Involuntary muscle contractions and spasms, often affecting the hands and feet, usually caused by low calcium levels or hyperventilation.

Coding Tips

  • Document the underlying cause (hypocalcemia, alkalosis, etc.) separately if identified
  • Tetany is a symptom; investigate and code the etiology when possible

Excludes 1 — Do NOT code together

  • hysterical tetany (F44.5)
  • neonatal tetany (P71.3)
  • parathyroid tetany (E20.9)
  • post-thyroidectomy tetany (E89.2)

Code Hierarchy

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