ICD-10-CM 2027
ICD-10 code for maxillary sinusitis
From the official ICD-10-CM alphabetic index entry “Sinusitis (accessory) (chronic) (hyperplastic) (nasal) (nonpurulent) (purulent) › maxillary”. Page updated September 29, 2026.
About coding maxillary sinusitis
The ICD-10-CM code for maxillary sinusitis is J32.0 (Chronic maxillary sinusitis). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J32.0.
Within J32 (chronic sinusitis), J32.0 is specifically for chronic maxillary sinusitis. Related codes cover chronic frontal sinusitis (J32.1), chronic ethmoidal sinusitis (J32.2), chronic sphenoidal sinusitis (J32.3), chronic pansinusitis (J32.4), other chronic sinusitis (J32.8) and unspecified (J32.9).
Use an additional code to identify: infectious agent (B95-B97).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific maxillary sinusitis codes (official index)
Common questions about maxillary sinusitis ICD-10 codes
What is the ICD-10 code for maxillary sinusitis?
- J32.0 — Chronic maxillary sinusitis. More specific codes apply when the documentation supports them: J01.00, J01.01.
What is the ICD-10 code for acute maxillary sinusitis?
- J01.00 — Acute maxillary sinusitis, unspecified.
Is J32.0 billable?
- Yes. J32.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J32.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J32.0 as a principal diagnosis.
Is J32.0 a CC or MCC?
- No. J32.0 is neither a CC nor an MCC under MS-DRG v44.0.