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Z22.2

Billable

Carrier of diphtheria

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

What This Code Means

A person who carries the diphtheria bacteria in their body and can spread it to others, typically without symptoms.

Coding Tips

  • Carriers may have had previous diphtheria infection or vaccination; verify immunization status
  • Important for identifying individuals who need prophylactic treatment and monitoring contacts

Code Hierarchy

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