G56.0 – Carpal tunnel syndrome

ICD-10-CM 2027 diagnosis code · Nerve, nerve root and plexus disorders

Non-billable header

ICD-10-CM code G56.0

Code: G56.0 (claims format: G560)
Description: Carpal tunnel syndrome
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 6. Diseases of the nervous system (G00-G99)
Block: G50-G59 Nerve, nerve root and plexus disorders
Parent codes: G56

Billable codes under G56.0

G56.0 is a header code and cannot be used on claims. Choose the most specific code:

G56.00 – Carpal tunnel syndrome, unspecified upper limbBillable
G56.01 – Carpal tunnel syndrome, right upper limbBillable
G56.02 – Carpal tunnel syndrome, left upper limbBillable
G56.03 – Carpal tunnel syndrome, bilateral upper limbsBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

G56 – Mononeuropathies of upper limb

Excludes1 (not coded here):

current traumatic nerve disorder - see nerve injury by body region

Block G50-G59

Excludes1 (not 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-)

Index terms for G56.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in G56

Frequently asked questions

What is ICD-10 code G56.0?

G56.0 is the ICD-10-CM code for carpal tunnel syndrome, in the block G50-G59 (Nerve, nerve root and plexus disorders).

Is G56.0 a billable code?

No. G56.0 is a header code with more specific child codes; report one of the billable codes listed above.

What category does G56.0 belong to?

It belongs to category G56 – Mononeuropathies of upper limb.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.