ICD-10-CM › G00-G99 › G50-G59 › G50 Disorders of trigeminal nerve › G50.9
Disorder of trigeminal nerve, unspecified
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Disorder of trigeminal nerve, unspecified
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from G50 Disorders of trigeminal nerve
Includes
- disorders of 5th cranial nerve
Inherited from the G50-G59 section Nerve, nerve root and plexus disorders (G50-G59)
Excludes1 - never coded here
- current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
- neuralgia NOS (M79.2)
- neuritis NOS (M79.2)
- peripheral neuritis in pregnancy (O26.82-)
- radiculitis NOS (M54.1-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Neuromyalgia
- Neurophthisis
- Neurosclerosis
- Endoperineuritis
- Musculoneuralgia
- Pain > nerve NEC
- Perineuritis NEC
- Irritation > nerve
- Compression > nerve
- Pain > neuromuscular
- Palsy > cranial nerve
- Disorder > cranial nerve
- Atrophy, atrophic > nerve
- Disease, diseased > nerve
- Irritation > cranial nerve
- Disorder > nerve > cerebral
- Disturbance > cranial nerve
- Mononeuritis > cranial nerve
- Paralysis, paralytic > nerve
- Disturbance > cerebral > nerve
- Neuritis > peripheral > single
- Degeneration, degenerative > nerve
- Neuropathy, neuropathic > ischemic
- Neuralgia, neuralgic > nerve, cranial
- Degeneration, degenerative > Wallerian
- Neuralgia, neuralgic > cranial > nerve
- Inflammation, inflamed, inflammatory > cranial nerve
- Inflammation, inflamed, inflammatory > spinal > nerve
- Lesion > trigeminal nerve
- Disorder > nerve > trigeminal
- Lesion > cranial nerve > fifth
- Disorder > nerve > cranial > fifth
- Paralysis, paralytic > paratrigeminal
- Paralysis, paralytic > trigeminal nerve
- Paralysis, paralytic > nerve > trigeminal
Codes in the same group
| Code | Description | Status |
|---|---|---|
| G50.0 | Trigeminal neuralgia | Valid |
| G50.1 | Atypical facial pain | Valid |
| G50.8 | Other disorders of trigeminal nerve | Valid |