2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Acute Respiratory Infections 460-466 > Acute Sinusitis 461.* > 2006 ICD-9-CM Diagnosis 461.1 Acute frontal sinusitis View the most recent version of ICD-9-CM 461.1 461.1 is a specific code that can be used to specify a diagnosis 461.1 contains 3 index entries View the ICD-9-CM Volume 1 461.* hierarchy  Index entries containing 461.1: Disease, diseased - see also Syndrome frontal sinus (chronic) 473.1 acute 461.1 Sinusitis (accessory) (nasal) (hyperplastic) (nonpurulent) (purulent) (chronic) 473.9 acute 461.9 frontal 461.1 frontal 473.1 acute 461.1