Is G47.4 a billable ICD-10 code?

No. G47.4 is a non-billable header code. Use a more specific subcategory for claims.

G47.4 ⚠ Non-billable

Narcolepsy and cataplexy

Q: What is ICD-10 code G47.4?

ICD-10-CM code G47.4 stands for "Narcolepsy and cataplexy". It is a non-billable header code in the Diseases of the Nervous System chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Diseases of the Nervous System

Code

G47.4

System

ICD-10-CM

Billable

No — use specific code

Effective

FY2026

Chapter

Diseases of the Nervous System

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code G47.4?

ICD-10-CM code G47.4 represents Narcolepsy and cataplexy. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Nervous System chapter, effective October 1, 2025 – September 30, 2026.

Is G47.4 billable?

No. G47.4 is a non-billable header. Select a more specific subcategory for claims submission.

What chapter is G47.4 in?

G47.4 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.

Related codes in the G47 category

G47 Sleep disorders Non-billable G47.0 Insomnia Non-billable G47.1 Hypersomnia Non-billable G47.2 Circadian rhythm sleep disorders Non-billable G47.3 Sleep apnea Non-billable G47.5 Parasomnia Non-billable G47.6 Sleep related movement disorders Non-billable G47.8 Other sleep disorders Billable

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