Sig code: timing
HS medical abbreviation
HS means "at bedtime", from the Latin "hora somni".
Each meaning matched at least two public references (3 in all for HS), checked October 23, 2026. The table lists them.
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What HS means
| Meaning | Latin origin | Where used | Checked against |
|---|---|---|---|
| at bedtime | hora somni | Prescriptions, Medication labels |
Also written: h.s.
Example
Sample label text: "apply at HS."
A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.
Related abbreviations
Elsewhere on Rivvi
Questions
What does HS mean in medical terms?
HS means "at bedtime", from the Latin "hora somni".
What does HS stand for in Latin?
HS comes from "hora somni", meaning "at bedtime".
Where is HS used?
HS shows up in prescriptions and medication labels. Its category here is sig code: timing.
Is HS on the Joint Commission Do Not Use list?
No. HS is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.