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J01.00

Billable

Acute maxillary sinusitis, unspecified

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

What This Code Means

A sudden infection of the maxillary sinuses (cheek sinuses) causing facial pain, pressure, and nasal congestion.

Coding Tips

  • •The '00' indicates this is the first episode and not recurrent; use J01.01 if the patient has a history of recurrent episodes
  • •Document whether the sinusitis is unilateral or bilateral if possible for more specific coding

Code Hierarchy

└J01Acute sinusitis└J01.0Acute maxillary sinusitis└J01.00Acute maxillary sinusitis, unspecified
└J01.00Acute maxillary sinusitis, unspecified

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