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Z88.9

Billable

Allergy status to unspecified drugs, medicaments and biological substances

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

What This Code Means

A patient has a known allergy to one or more drugs, medications, or biological substances, but the specific substance causing the allergy is not documented or specified.

Coding Tips

  • Use this code only when the specific allergen cannot be identified; if the allergen is known, use a more specific Z88 code
  • This is a status code used for documentation purposes and should be included in the patient's allergy history

Code Hierarchy

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