J01.9 (Acute sinusitis, unspecified) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the respiratory system chapter. It identifies cases of acute sinusitis, unspecified for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

J01.9 — Acute sinusitis, unspecified

Chapter J00-J99: Diseases of the respiratory system

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Sub-codes under J01.9

J01.90Acute sinusitis, unspecifiedJ01.91Acute recurrent sinusitis, unspecified

Related diagnoses

J01.0Acute maxillary sinusitisJ01.1Acute frontal sinusitisJ01.2Acute ethmoidal sinusitisJ01.3Acute sphenoidal sinusitisJ01.4Acute pansinusitisJ01.8Other acute sinusitis

Common questions about J01.9 (Acute sinusitis, unspecified)

What does ICD-10 code J01.9 mean?
J01.9 is the ICD-10-CM 2025 code for Acute sinusitis, unspecified. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is J01.9 a billable diagnosis code?
J01.9 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under J01.9. Browse the sub-codes listed on this page.
Which ICD-10 chapter does J01.9 belong to?
J01.9 belongs to the chapter "Diseases of the respiratory system" (codes J00-J99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Acute sinusitis, unspecified?
For a plain-language explanation of Acute sinusitis, unspecified, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Acute sinusitis, unspecified" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗