ICD-10-CM 2027
ICD-10 code for nasal sinus mucosa degeneration
From the official ICD-10-CM alphabetic index entry “Degeneration, degenerative › nasal sinus (mucosa)”. Page updated September 29, 2026.
About coding nasal sinus mucosa degeneration
The ICD-10-CM code for nasal sinus mucosa degeneration is J32.9 (Chronic sinusitis, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J32.9.
Within J32, choose J32.9 (unspecified) only when documentation doesn't support a more specific option: chronic maxillary sinusitis (J32.0), chronic frontal sinusitis (J32.1), chronic ethmoidal sinusitis (J32.2), chronic sphenoidal sinusitis (J32.3), chronic pansinusitis (J32.4) and other chronic sinusitis (J32.8).
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 nasal sinus mucosa degeneration codes (official index)
Common questions about nasal sinus mucosa degeneration ICD-10 codes
What is the ICD-10 code for nasal sinus mucosa degeneration?
- J32.9 — Chronic sinusitis, unspecified. More specific codes apply when the documentation supports them: J32.1, J32.0.
What is the ICD-10 code for frontal nasal sinus mucosa degeneration?
- J32.1 — Chronic frontal sinusitis.
What is the ICD-10 code for maxillary nasal sinus mucosa degeneration?
- J32.0 — Chronic maxillary sinusitis.
Is J32.9 billable?
- Yes. J32.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J32.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J32.9 as a principal diagnosis.
Is J32.9 a CC or MCC?
- No. J32.9 is neither a CC nor an MCC under MS-DRG v44.0.