Medication Audits for Care Homes: A Practical CQC-Ready Guide
Medication errors are among the most common safety incidents in care homes, and medication management is one of the areas CQC inspectors scrutinise most closely. With many residents taking eight or more medicines, frequent prescribing changes, and staff who may have limited pharmacological training, this is a high-risk area that demands a rigorous, regular audit process — not just a policy on a shelf.
This guide explains what a medication audit should cover, how often to run one, the most common findings that lead to requirement notices, and gives you a practical checklist you can start using this month. It pairs well with our full CQC inspection checklist.
Why Medication Audits Matter to CQC
Medication is assessed primarily under the Safe key question, and specifically under Regulation 12 (Safe care and treatment) of the Health and Social Care Act 2008. Inspectors don't just want to see that medicines are administered — they want evidence that your service actively monitors for errors, near misses and gaps, and takes documented action when it finds them.
A care home with occasional medication errors but a strong, evidenced audit trail showing those errors were caught and acted on will usually be viewed far more favourably than a home with a "clean" record but no real evidence of active oversight.
CQC assessors are as interested in what happens after an error as they are in the error itself. A documented process for identifying, reporting, reviewing and learning from medication incidents is often more important to your rating than the raw error count.
How Often Should You Audit Medication?
Monthly medication audits are standard practice and the minimum most services should be running. For services with a higher proportion of residents on complex medication regimes, or those recovering from a Requires Improvement rating in this area, more frequent spot-checks — weekly or even daily sampling — are appropriate until confidence is rebuilt.
NICE guidance (NG67, and SC1 for care homes specifically) recommends that all residents have a structured medication review at least annually, conducted by a pharmacist or prescriber, with more frequent reviews for residents taking ten or more medicines or those with complex needs.
What a Medication Audit Should Cover
MAR Chart Accuracy
Sample 10–20% of MAR (Medication Administration Record) charts each month, or all of them if your home has fewer than 20 residents. Check every dose slot for the previous month: there should be no unexplained gaps, and only approved codes should be used to record why a dose wasn't given (e.g. refused, in hospital, withheld on clinical advice). Blank boxes with no explanation are one of the most common findings inspectors flag.
Medication Administration Error Rate
Calculate your error rate as a percentage of total doses administered. A commonly used benchmark is to keep non-administration without a documented reason below 5% — but the specific number matters less than whether you're tracking it consistently and can show a trend over time, ideally improving.
Controlled Drugs
The CD (controlled drugs) register must be checked against physical stock with a full count — not just a running balance carried forward. Any discrepancy, however small, needs to be investigated and documented immediately, not batched into a monthly review.
Medication Reviews
Check that structured medication reviews are happening on the schedule NICE recommends, that a pharmacist or prescriber is involved, and — critically — that the outcomes of those reviews are actually being actioned in the care plan and MAR chart, not just filed.
Staff Competency
Every staff member administering medication should have documented, up-to-date competency assessments — not just a training certificate from induction. Inspectors will ask staff directly about specific medications and what they'd do if they made an error, so competency needs to be genuine and current, not just paper-based.
Error Correction and Documentation
Any correction to a MAR chart should be a single line through the error, dated and initialled — never correction fluid or a fully obscured entry. How errors are corrected on paper records is one of the small details inspectors check closely, because it's a direct indicator of whether staff understand proper documentation practice.
Many services carry out audits but don't close the loop — issues are identified, logged, and then not followed up. If your audit trail shows the same type of error recurring month after month with no evidence of action taken, this is a governance failure under the Well-led key question — exactly the kind of gap that keeps services stuck at Requires Improvement instead of Good.
Building Your Audit Trail
Beyond the monthly audit itself, inspectors want to see the wider system around it:
- A named, accountable person responsible for medication audits
- A clear escalation process when an audit identifies a serious error
- Evidence that patterns are analysed over time, not just individual incidents in isolation
- Action plans with owners and deadlines for any issues found
- A link between audit findings and staff training — for example, if MAR chart gaps are a recurring issue, evidence that this has been addressed through targeted retraining
✅ Monthly Medication Audit Checklist
- 10–20% (or all, if under 20 residents) of MAR charts sampled and reviewed
- Every dose slot checked for the previous month — no unexplained gaps
- Only approved codes used to record non-administration
- Medication error rate calculated and compared to previous months
- CD register checked against full physical stock count
- Structured medication reviews up to date per resident schedule
- Review outcomes reflected in current care plans and MAR charts
- Staff competency assessments current, not just induction training
- Any MAR chart corrections made correctly — single line, dated, initialled
- Findings documented with a clear, owned, dated action plan
Frequently Asked Questions
How often should medication audits be carried out in a care home?
Monthly audits are standard practice for most care homes. Services with higher-risk residents, complex medication regimes, or recovering from a poor rating in this area should consider more frequent spot-checks in addition to the full monthly audit.
What is an acceptable medication error rate?
There's no single CQC-mandated figure, but keeping non-administration without a documented reason below roughly 5% is a commonly used internal benchmark. Inspectors are more interested in whether you're tracking the rate consistently and acting on trends than in the exact number.
What's the most common medication finding in CQC inspections?
Gaps in MAR charts with no documented explanation, and controlled drug stock discrepancies that weren't identified or investigated promptly, are among the most frequently cited issues. Poor governance — audits that identify problems without evidence of follow-up action — is a closely related and equally common finding.
Who should carry out medication audits?
A named, accountable person — often a senior care worker, deputy manager or the registered manager — should be responsible for medication audits, with clear oversight from the registered manager regardless of who carries out the day-to-day check.
Do medication audits need to be digital?
No, paper-based audits are acceptable to CQC, but electronic medication administration systems make audit trails easier to maintain, reduce the risk of gaps going unnoticed, and can flag anomalies automatically. Whichever system you use, consistency and clear documentation matter more than the format.
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