2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Acute Respiratory Infections 460-466 > ICD-9-CM Diagnosis 461 Acute sinusitis 461 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 461.0 Acute maxillary sinusitis 461.0 is a specific code that can be used to specify a diagnosis 461.0 contains 5 index entries ICD-9-CM Diagnosis 461.1 Acute frontal sinusitis 461.1 is a specific code that can be used to specify a diagnosis 461.1 contains 3 index entries ICD-9-CM Diagnosis 461.2 Acute ethmoidal sinusitis 461.2 is a specific code that can be used to specify a diagnosis 461.2 contains 2 index entries ICD-9-CM Diagnosis 461.3 Acute sphenoidal sinusitis 461.3 is a specific code that can be used to specify a diagnosis 461.3 contains 2 index entries ICD-9-CM Diagnosis 461.8 Other acute sinusitis 461.8 is a specific code that can be used to specify a diagnosis 461.8 contains 2 index entries ICD-9-CM Diagnosis 461.9 Acute sinusitis unspecified 461.9 is a specific code that can be used to specify a diagnosis 461.9 contains 1 index entry