464: Acute laryngitis and tracheitis
Excludes:
that associated with influenza (487.1, 488.02, 488.12)
that due to Streptococcus (034.0)
464.1 Acute tracheitis
Tracheitis (acute):
NOS
catarrhal
viral
Excludes:
chronic tracheitis (491.8)
464.10: Without mention of obstruction
464.11: With obstruction
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