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G44.53

Billable

Primary thunderclap headache

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

What This Code Means

A sudden, severe headache that strikes like a thunderbolt, reaching maximum intensity within seconds to minutes.

Coding Tips

  • •Emphasize the sudden onset and rapid escalation to severe intensity in documentation
  • •Rule out secondary causes like subarachnoid hemorrhage through appropriate imaging or clinical assessment

Code Hierarchy

└G44Other headache syndromes└G44.5Complicated headache syndromes└G44.53Primary thunderclap headache
└G44.53Primary thunderclap headache

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