ICD-10-CM Tabular Index · Chapter 6 · FY 2026 G50–G59
Nerve, nerve root and plexus disorders (G50-G59) ICD-10-CM
The G50–G59 section covers nerve, nerve root and plexus disorders with 131 ICD-10-CM diagnosis codes, of which 106 are billable in fiscal year 2026. The section is organized into the 10 code ranges listed below.
✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
10
Code Ranges
131
Diagnosis Codes
106
Billable Codes
G50–G59
Code Range
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the G50–G59 Code Range
ICD-10 codes G50-G59 cover disorders affecting nerve structures including the trigeminal nerve, facial nerve, other cranial nerves, nerve roots, plexuses, and mononeuropathies of limbs. These codes specify various nerve-related conditions from facial paralysis to nerve compression syndromes in upper and lower limbs.
This range includes conditions like G50.0 for trigeminal neuralgia, also known as fifth cranial nerve disorders, where severe facial pain occurs. Facial nerve issues such as G51.0 for Bell's palsy are included with synonyms like acute facial paralysis. Disorders of other cranial nerves (G52) like glossopharyngeal neuralgia and vagus nerve dysfunction are also coded here. Plexus disorders appear in codes like G54.0 for brachial plexus disorders, covering syndromes such as thoracic outlet syndrome. Mononeuropathies affecting individual nerves in limbs are detailed in codes G56 and G57, including conditions like G56.0 for carpal tunnel syndrome and G57.0 for sciatic nerve lesions. Codes also address complex pain syndromes such as causalgia (G56.4, G57.7). Unspecified and other specified nerve disorders are available to capture less clearly defined cases, assisting in accurate medical coding for nerve-related diagnoses.
Questions About This Page
How many codes are in the G50-G59 range?
The G50-G59 range contains 131 ICD-10-CM diagnosis codes in FY 2026. 106 of them are billable, and the rest are category headers that organize the section.
What conditions does G50-G59 cover?
The range covers nerve, nerve root and plexus disorders. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
multiple cranial nerve palsy in sarcoidosis D86.82
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
current traumatic nerve root and plexus disorders - see nerve injury by body region
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
nerve root compression due to in ankylosing spondylitis M45
nerve root compression due to in dorsopathies M53M54
nerve root compression due to in intervertebral disc disorders M50.1M51.1
nerve root compression due to in spondylopathies M46M48
nerve root compression due to in spondylosis M47.0M47.2
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
current traumatic nerve disorder - see nerve injury by body region
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
current traumatic nerve disorder - see nerve injury by body region
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
underlying disease
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
