2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Other Diseases Of Upper Respiratory Tract 470-478 > Nasal Polyps 471.* > 2006 ICD-9-CM Diagnosis 471.0 Polyp of nasal cavity View the most recent version of ICD-9-CM 471.0 Focal accumulations of EDEMA fluid in the NASAL MUCOSA accompanied by HYPERPLASIA of the associated submucosal connective tissue. Polyps may be NEOPLASMS, foci of INFLAMMATION, degenerative lesions, or malformations. 471.0 is a specific code that can be used to specify a diagnosis 471.0 contains 5 index entries View the ICD-9-CM Volume 1 471.* hierarchy Alternate Terminology Polyp: choanal nasopharyngeal  Index entries containing 471.0: Polyp, polypus adenoid tissue 471.0 choanal 471.0 nares posterior 471.0 nasal (mucous) 471.9 cavity 471.0 nasopharyngeal 471.0