ICD10BillableValid for clinical use
ICD-10 Code G47.00: Insomnia, unspecified
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
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 insomnia, unspecified 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
G47.0Insomnia
currentG47.0
Official coding notes
Inclusion terms
- Insomnia NOS
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 90847high
FAMILY PSYCHOTHERAPY (CONJOINT PSYCHOTHERAPY) (WITH PATIENT PRESENT), 50 MINUTES
Source: CMS coverage guidance
CPT 90846high
FAMILY PSYCHOTHERAPY (WITHOUT THE PATIENT PRESENT), 50 MINUTES
Source: CMS coverage guidance
CPT 90853high
GROUP PSYCHOTHERAPY (OTHER THAN OF A MULTIPLE-FAMILY GROUP)
Source: CMS coverage guidance
CPT 90785high
INTERACTIVE COMPLEXITY (LIST SEPARATELY IN ADDITION TO THE CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 90887high
INTERPRETATION OR EXPLANATION OF RESULTS OF PSYCHIATRIC, OTHER MEDICAL EXAMINATIONS AND PROCEDURES, OR OTHER ACCUMULATED DATA TO FAMILY OR OTHER RESPONSIBLE PERSONS, OR ADVISING THEM HOW TO ASSIST PATIENT
Source: CMS coverage guidance
CPT 90849high
MULTIPLE-FAMILY GROUP PSYCHOTHERAPY
Source: CMS coverage guidance
Coding guidelines
Common synonyms
Insomnia, unspecifiedInsomnia
Frequently asked questions
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.