ICD-10-CM Code G47.421
Narcolepsy in conditions classified elsewhere with cataplexy
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.Manifestation Code
Certain ICD-10-CM codes identify an underlying condition known as an etiology code. Conditions that arise as a result of an underlying condition (etiology), are referred to as Manifestations. In ICD-10-CM, etiology codes must be coded first, followed by the manifestation codes. When a condition requires etiology and manifestation codes, there is a "use additional code" note following the etiology code and a "code first" note following the manifestation code.G47.421 is a billable ICD code used to specify a diagnosis of narcolepsy in conditions classified elsewhere with cataplexy. A 'billable code' is detailed enough to be used to specify a medical diagnosis.
The ICD code G474 is used to code Narcolepsy
Narcolepsy is a chronic neurological disorder involving the loss of the brain's ability to regulate sleep-wake cycles. Symptoms include excessive daytime sleepiness, comparable to how people who don't have narcolepsy feel after 24–48 hours of sleep deprivation, as well as disturbed sleep which often is confused with insomnia. Another common symptom of narcolepsy is cataplexy, a sudden and transient episode of muscle weakness accompanied by full conscious awareness, typically (though not necessarily) triggered by emotions such as laughing, crying, terror, etc. affecting roughly 70% of people who have narcolepsy.
| Specialty: | Sleep Medicine |
| MeSH Codes: | D009290, D002385 |
| ICD 9 Codes: | 347, 347 |
MS-DRG Mapping
- DRG Group #091-093 - Other disorders of nervous system with MCC.
- DRG Group #091-093 - Other disorders of nervous system with CC.
- DRG Group #091-093 - Other disorders of nervous system without CC or MCC.
Related Concepts SNOMET-CT
- Secondary narcolepsy with cataplexy (disorder)
Coding Advice SNOMET-CT
- Consider additional code to identify specific condition or disease
ICD-10-CM Alphabetical Index References for 'G47.421 - Narcolepsy in conditions classified elsewhere with cataplexy'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G47.421. Click on any term below to browse the alphabetical index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 347.11 was previously used, G47.421 is the appropriate modern ICD10 code.
Parent Code: G47.42 - Narcolepsy in conditions classified elsewhere