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F09

Billable

Unspecified mental disorder due to known physiological condition

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

What This Code Means

A mental health disorder caused by a known medical condition when the specific type of mental disorder cannot be determined or is not specified.

Coding Tips

  • •This is a catch-all code for mental disorders due to medical conditions that don't fit other specific categories
  • •Document the underlying medical condition and attempt to specify the mental disorder type when possible

Excludes 1 — Do NOT code together

  • mild neurocognitive disorder due to known physiological condition (F06.7-)
  • psychosis NOS (F29)

Code First

  • the underlying physiological condition

Code Hierarchy

└F09Unspecified mental disorder due to known physiological condition
└F09Unspecified mental disorder due to known physiological condition

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