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F51.09

Billable

Other insomnia not due to a substance or known physiological condition

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

What This Code Means

Persistent difficulty falling or staying asleep that is not caused by medications, substances, or a known medical condition.

Coding Tips

  • •Use this code only after ruling out substance use, medications, and physiological causes
  • •This is a primary insomnia diagnosis when no other cause can be identified

Code Hierarchy

└F51Sleep disorders not due to a substance or known physiological condition└F51.0Insomnia not due to a substance or known physiological condition└F51.09Other insomnia not due to a substance or known physiological condition
└F51.09Other insomnia not due to a substance or known physiological condition

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