2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Malignant Neoplasm Of Lip, Oral Cavity, And Pharynx 140-149 > Malignant Neoplasm Of Floor Of Mouth 144.* > 2006 ICD-9-CM Diagnosis 144.9 Malignant neoplasm of floor of mouth part unspecified View the most recent version of ICD-9-CM 144.9 144.9 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 144.* hierarchy