2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Disorders Of The Peripheral Nervous System 350-359 > Trigeminal Nerve Disorders 350.* > 2006 ICD-9-CM Diagnosis 350.9 Trigeminal nerve disorder unspecified View the most recent version of ICD-9-CM 350.9 Diseases of the trigeminal nerve or its nuclei, which are located in the pons and medulla. The nerve is composed of three divisions: ophthalmic, maxillary, and mandibular, which provide sensory innervation to structures of the face, sinuses, and portions of the cranial vault. The mandibular nerve also innervates muscles of mastication. Clinical features include loss of facial and intra-oral sensation and weakness of jaw closure. Common conditions affecting the nerve include brain stem ischemia, INFRATENTORIAL NEOPLASMS, and TRIGEMINAL NEURALGIA. 350.9 is a specific code that can be used to specify a diagnosis 350.9 contains 7 index entries View the ICD-9-CM Volume 1 350.* hierarchy  Index entries containing 350.9: Disorder - see also Disease nerve 349.9 cranial 352.9 fifth 350.9 trigeminal 350.9 specified NEC 350.8 Lesion(s) cranial nerve 352.9 fifth 350.9 trigeminal nerve 350.9 Paralysis, paralytic (complete) (incomplete) 344.9 nerve - see also Disorder, nerve trigeminal 350.9 paratrigeminal 350.9 trigeminal nerve 350.9