Sig code: frequency

QHS medical abbreviation

QHS means "every night at bedtime", from the Latin "quaque hora somni".

Each meaning matched at least two public references (3 in all for QHS), checked October 23, 2026. The table lists them.

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What QHS means

MeaningLatin originWhere usedChecked against
every night at bedtimequaque hora somniPrescriptions, Medication labels

Also written: q.h.s.

Example

Sample label text: "take QHS."

A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.

Related abbreviations

  • HSat bedtime
  • QAMevery morning
  • QDevery day
  • BIDtwice a day
  • PRNas needed
  • QIDfour times a day

Elsewhere on Rivvi

Questions

What does QHS mean in medical terms?

QHS means "every night at bedtime", from the Latin "quaque hora somni".

What does QHS stand for in Latin?

QHS comes from "quaque hora somni", meaning "every night at bedtime".

Where is QHS used?

QHS shows up in prescriptions and medication labels. Its category here is sig code: frequency.

Is QHS on the Joint Commission Do Not Use list?

No. QHS is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.

Source: NCI Thesaurus, including CDISC SDTM terminology (NCI EVS); NLM SPECIALIST Lexicon abbreviations file (LRABR); FDA Acronyms and Abbreviations. Data as of October 23, 2026. Last updated October 23, 2026. How we source data. Spotted an error? Send a correction.

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