ICD-10-CM 2027
ICD-10 code for frontal sinusitis
From the official ICD-10-CM alphabetic index entry “Sinusitis (accessory) (chronic) (hyperplastic) (nasal) (nonpurulent) (purulent) › frontal”. Page updated September 29, 2026.
About coding frontal sinusitis
The ICD-10-CM code for frontal sinusitis is J32.1 (Chronic frontal 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 J32.1.
Within J32 (chronic sinusitis), J32.1 is specifically for chronic frontal sinusitis. Related codes cover chronic maxillary sinusitis (J32.0), 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 frontal sinusitis codes (official index)
Common questions about frontal sinusitis ICD-10 codes
What is the ICD-10 code for frontal sinusitis?
- J32.1 — Chronic frontal sinusitis. More specific codes apply when the documentation supports them: J01.10, J01.11.
What is the ICD-10 code for acute frontal sinusitis?
- J01.10 — Acute frontal sinusitis, unspecified.
Is J32.1 billable?
- Yes. J32.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J32.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J32.1 as a principal diagnosis.
Is J32.1 a CC or MCC?
- No. J32.1 is neither a CC nor an MCC under MS-DRG v44.0.