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 > Mononeuritis Of Lower Limb And Unspecified Site 355.* > 2006 ICD-9-CM Diagnosis 355.5 Tarsal tunnel syndrome View the most recent version of ICD-9-CM 355.5 Entrapment of the distal branches of the posterior TIBIAL NERVE (which divides into the medial plantar, lateral plantar, and calcanial nerves) in the tarsal tunnel, which lies posterior to the internal malleolus and beneath the retinaculum of the flexor muscles of the foot. Symptoms include ankle pain radiating into the foot which tends to be aggravated by walking. Examination may reveal Tinel's sign (radiating pain following nerve percussion) over the tibial nerve at the ankle, weakness and atrophy of the small foot muscles, or loss of sensation in the foot. (From Foot Ankle 1990;11 355.5 is a specific code that can be used to specify a diagnosis 355.5 contains 6 index entries View the ICD-9-CM Volume 1 355.* hierarchy  Index entries containing 355.5: Compression nerve NEC - see also Disorder, nerve posterior tibial (in tarsal tunnel) 355.5 Disorder - see also Disease nerve 349.9 posterior tibial 355.5 Mononeuritis 355.9 posterior tibial nerve 355.5 Neuropathy, neuropathic (see also Disorder, nerve) 355.9 entrapment 355.9 posterior tibial nerve 355.5 Syndrome - see also Disease tarsal tunnel 355.5 Tarsal tunnel syndrome 355.5