490
ICD-9-CMThis code represents inflammation of the bronchial tubes when the medical record does not specify whether the condition is acute or chronic. It indicates a general diagnosis of bronchitis without further temporal classification by the provider.
Use this code when the physician's documentation explicitly states "bronchitis" without specifying "acute" or "chronic." This often occurs in situations where the exact onset or duration is unclear, or the provider simply uses the general term.
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