Simplified Crohn's Disease Activity Index. No 7-day diary required. Validated vs CDAI (r=0.93). Remission target: HBI < 5.
General Wellbeing
Abdominal Pain
Liquid / Soft Stools per Day
Abdominal Mass
Complications (1pt each)
Arthralgia, uveitis, erythema nodosum, aphthous ulcers, pyoderma, anal fissure, new fistula, abscess
Verified
Last Review: 2026-07-17
| < 5 | Clinical Remission |
| 5–7 | Mild Activity |
| 8–16 | Moderate Activity |
| > 16 | Severe Activity |
Harvey RF et al. • Lancet. 1980;1(8167):514. The foundational study established as a direct simplification of the NCCDS CDAI.
View Source• . ;
Best WR. • Clinical Gastroenterology and Hepatology. 2006;4(3):304-10. Statistical validation of the HBI-CDAI correlation.
View SourceLast Comprehensive Review: 2026-07-17
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