G47.0 ICD-10-CA code: Disorders of initiating and maintaining sleep [insomnias]
G47.0 is the ICD-10-CA code for “Disorders of initiating and maintaining sleep [insomnias]” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
G47.0Disorders of initiating and maintaining sleep [insomnias]
Short description: Disorders initiating & maintaining sleep
ICD-10-CA · Canada · Also written G470
Index terms
Entries in CIHI’s alphabetical index that lead to G47.0. Searching the index by the condition the note names is how coders reach this code.
- Hyposomnia
- Sleeplessness
- Insomnia (organic)
- Disorder (of), sleep, insomnia type
- Disorder (of), sleep, initiating or maintaining
Notes for G47.0
As CIHI prints them, with any note G47.0 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Nightmares (F51.5)nonorganic sleep disorders (F51.-)sleep terrors (F51.4)sleepwalking (F51.3)From G47 Other sleep disorders
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 6: Diseases of the nervous system (G00-G99)
Where G47.0 sits
- 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
- 2Block G40-G47Episodic and paroxysmal disorders
- 3Category G47Other sleep disorders
- 4Valid code G47.0Disorders of initiating and maintaining sleep [insomnias]
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code G47.0 mean?
G47.0 is the ICD-10-CA code for “Disorders of initiating and maintaining sleep [insomnias]” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is G47.0 in ICD-10-CA?
G47.0 sits under G47 Other sleep disorders, within G40-G47 Episodic and paroxysmal disorders, within Chapter 6: Diseases of the nervous system (G00-G99).
What coding notes apply to G47.0?
ICD-10-CA lists Excludes notes for G47.0, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.