Diagnostic code
356 — Peripheral Nervous System: Idiopathic peripheral neuritis
356 is an OHIP diagnostic code used on Ontario Health Insurance Plan claims. Peripheral Nervous System: Idiopathic peripheral neuritis.
- Code
- 356
- Description
- Peripheral Nervous System: Idiopathic peripheral neuritis
Updated October 26, 2026
356 is the OHIP diagnostic code for idiopathic peripheral neuritis, the code that fits peripheral neuropathy without a more specific cause.
Conditions billed under this code
- Peripheral neuropathy
What it covers
The Ministry lists 356 as 'Peripheral Nervous System: Idiopathic peripheral neuritis' in the Nervous System and Sense Organs chapter.
In ICD-9, the system the list is based on, 356 covers hereditary and idiopathic peripheral neuropathy, so use it for peripheral neuropathy with no known cause.
Diabetic neuropathy is coded 250, because the diabetes code includes complications. Other neighbours: 350 trigeminal neuralgia, 351 Bell's palsy, 352 other cranial nerve disorders, 358 myasthenia gravis, 781 leg pain or cramps not yet diagnosed.
Related codes: 250, 350, 351, 352, 358
Sources
APEX flags claims whose diagnostic code does not fit the service billed before they come back rejected. See how APEX works · Pricing