G52.9 – Cranial nerve disorder, unspecified

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

Billable code

ICD-10-CM code G52.9
Code
G52.9 (claims format: G529)
Description
Cranial nerve disorder, unspecified
Billable
Yes – valid for HIPAA-covered transactions
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
G52

Notes inherited from parent codes

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

G52 – Disorders of other cranial nerves

Excludes2 (not included here):
  • disorders of acoustic [8th] nerve (H93.3)
  • disorders of optic [2nd] nerve (H46, H47.0)
  • paralytic strabismus due to nerve palsy (H49.0-H49.2)

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 G52.9

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

Related codes in G52

Frequently asked questions

What is ICD-10 code G52.9?

G52.9 is the ICD-10-CM code for cranial nerve disorder, unspecified, in the block G50-G59 (Nerve, nerve root and plexus disorders).

Is G52.9 a billable code?

Yes. G52.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does G52.9 belong to?

It belongs to category G52 – Disorders of other cranial nerves.

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.