Sleep
Insomnia Severity Index (ISI)
Score interpretation for Insomnia Severity Index (ISI)
Reference information · Score-entry tool
- Last content update
- 2026-10-26
- Clinical review
- Not independently reviewed
- Source jurisdiction
- See individual sources
- Coverage
- Score-entry tool
| Field | Instrument context |
|---|---|
| Version | ISI; seven-item adult version |
| Respondent | Self-report |
| Purpose | Score interpretation for Insomnia Severity Index (ISI) |
Clinician score entry
Enter the completed seven-item total using the instrument’s recall period and original response keys.
Scores stay in this page’s memory. Reset or leave the page to clear them. Use the exact instrument version and its authorized form.
Administration
Enter the completed seven-item total using the instrument’s recall period and original response keys.
Scoring method
Seven scores from 0–4 sum to 0–28.
Interpretation & limitations
- Bands describe reported insomnia severity. Sleep history, daytime impact and other causes of disrupted sleep remain part of assessment.
- A score cannot diagnose sleep apnea or distinguish insomnia from all other sleep disorders.