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ICD10BillableValid for clinical use

ICD-10 Code G47.411: Narcolepsy with cataplexy

G47.411 is a billable ICD-10 diagnosis code used to classify Narcolepsy with cataplexy in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

When is it used?

  • May be used when a clinician documents narcolepsy with cataplexy in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
6Diseases of the nervous system (G00-G99)
block
G40-G47Episodic and paroxysmal disorders
category
G47Sleep disorders
category
G47.4Narcolepsy and cataplexy
category
G47.41Narcolepsy
currentG47.41

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

NeurologistGeneral Physician

Coverage-related procedures and services

CPT 81226high
CYP2D6 (CYTOCHROME P450, FAMILY 2, SUBFAMILY D, POLYPEPTIDE 6) (EG, DRUG METABOLISM), GENE ANALYSIS, COMMON VARIANTS (EG, *2, *3, *4, *5, *6, *9, *10, *17, *19, *29, *35, *41, *1XN, *2XN, *4XN)
Source: CMS coverage guidance
CPT 81418high
DRUG METABOLISM (EG, PHARMACOGENOMICS) GENOMIC SEQUENCE ANALYSIS PANEL, MUST INCLUDE TESTING OF AT LEAST 6 GENES, INCLUDING CYP2C19, CYP2D6, AND CYP2D6 DUPLICATION/DELETION ANALYSIS
Source: CMS coverage guidance
CPT 0349Uhigh
DRUG METABOLISM OR PROCESSING (MULTIPLE CONDITIONS), WHOLE BLOOD OR BUCCAL SPECIMEN, DNA ANALYSIS, 27 GENE REPORT, WITH VARIANT ANALYSIS, INCLUDING REPORTED PHENOTYPES AND IMPACTED GENE-DRUG INTERACTIONS
Source: CMS coverage guidance
CPT 95805high
MULTIPLE SLEEP LATENCY OR MAINTENANCE OF WAKEFULNESS TESTING, RECORDING, ANALYSIS AND INTERPRETATION OF PHYSIOLOGICAL MEASUREMENTS OF SLEEP DURING MULTIPLE TRIALS TO ASSESS SLEEPINESS
Source: CMS coverage guidance
CPT 95810high
POLYSOMNOGRAPHY; AGE 6 YEARS OR OLDER, SLEEP STAGING WITH 4 OR MORE ADDITIONAL PARAMETERS OF SLEEP, ATTENDED BY A TECHNOLOGIST
Source: CMS coverage guidance
CPT 95808high
POLYSOMNOGRAPHY; ANY AGE, SLEEP STAGING WITH 1-3 ADDITIONAL PARAMETERS OF SLEEP, ATTENDED BY A TECHNOLOGIST
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Narcolepsy with cataplexy

Frequently asked questions

Code details

CodeG47.411
SystemICD10
Display nameNarcolepsy with cataplexy
ChapterDiseases of the nervous system (G00-G99)
BlockEpisodic and paroxysmal disorders

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Gélineau's syndromeNarcolepsySyndrome

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.