Is G54 a billable ICD-10-CM code?

No. G54 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does G54 sit in the tabular list?

Diseases of the nervous system (G00-G99), in the block Nerve, nerve root and plexus disorders (G50-G59).

What cannot be coded together with G54?

G54 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

G54

G54 — Nerve root and plexus disorders

Non-billable headerICD-10-CM

G54 is a non-billable header ICD-10-CM code for nerve root and plexus disorders. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

current traumatic nerve root and plexus disorders - see nerve injury by body region
intervertebral disc disorders (M50-M51)
neuralgia or neuritis NOS (M79.2)
neuritis or radiculitis brachial NOS (M54.13)
neuritis or radiculitis lumbar NOS (M54.16)
neuritis or radiculitis lumbosacral NOS (M54.17)
neuritis or radiculitis thoracic NOS (M54.14)
radiculitis NOS (M54.10)
radiculopathy NOS (M54.10)
spondylosis (M47.-)

Other codes that can never be billed with G54

These codes carry an Excludes1 note pointing at G54. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G54 alone.

M62.5Muscle wasting and atrophy, not elsewhere classified

Risk adjustment

G54 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead G54

10 child codes. Green means billable.

Questions about G54

Is G54 a billable ICD-10-CM code?: No. G54 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does G54 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Nerve, nerve root and plexus disorders (G50-G59).
What cannot be coded together with G54?: G54 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.