G47.4

Non-Billable
ChapterG00–G99
Ranksubcategory
Official Description

Narcolepsy and cataplexy

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 6: Diseases of the Nervous System (G00-G99).
General instructions are available for the parent sections:
View CH6 NotesView G47 Notes

Clinical Hierarchy

CH6Diseases of the nervous system (G00-G99)
G40-G47Episodic and paroxysmal disorders (G40-G47)
G47Sleep disorders
G47.4Narcolepsy and cataplexy
G47.41Narcolepsy
G47.42Narcolepsy in conditions classified elsewhere

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G47.4:

categoryG47
Sleep disorders
View context instructions
chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to G47.4. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

8 raw paths
Gélineau's syndrome2 unique routes
Direct index entry→G47.4
with cataplexy→G47.4
Narcolepsy4 unique routes
Direct index entry→G47.4
in conditions classified elsewhere→G47.4(2 variants)
with cataplexy→G47.4
with cataplexy→G47.4
Syndrome2 unique routes
Gelineau's→G47.4(2 variants)
with cataplexy→G47.4

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Narcolepsy and cataplexy.

Search PCS Codes