Understanding Medication Risk | IMM

Understanding Medication Risk: A Primer for Case Managers

Learn to identify and manage medication-related risks in your claims

Published: 3 April 2026 | Updated: 3 April 2026

Why You Need to Understand Medication Risk

As a case manager, you're responsible for your claimant's wellbeing and recovery. Medications are part of that picture. Understanding basic medication risks helps you identify problems early, ask better questions, and advocate more effectively for your claimant.

You don't need to be a pharmacist. But you should understand common medication risks that appear in insurance claims and know when to seek expert help. This primer covers the essentials.

Core Concept: Medication risk is the possibility that a medicine will cause harm, either through side effects, interactions, or inappropriateness for the claimant's condition.

Types of Medication Risk

Medication risks fall into several categories:

Appropriateness Risk

Is this medicine actually indicated for this claimant's condition? Sometimes a medicine is prescribed for a condition the claimant doesn't have, or after the condition has resolved. Medications appropriate for acute injury may not be appropriate for chronic management. Medications appropriate for one condition may be wrong for another.

What you'll see: Your claimant is on a medicine that doesn't seem connected to their injury. They ask "Why am I taking this?" The medicine seems to be helping with something other than the injury.

Dosing Risk

Is the dose appropriate for this claimant? Too high a dose causes excessive side effects. Too low a dose is ineffective. Dosing depends on the claimant's age, weight, kidney function, liver function, and whether they're taking other medicines that interact. A dose that's appropriate for a 70-kilogram adult might be wrong for a 50-kilogram adult or someone with kidney problems.

What you'll see: Your claimant is getting side effects that seem excessive. Or, conversely, the medicine doesn't seem to be helping, despite the dose being increased.

Interaction Risk

Medications can interact with each other, with food, with supplements, or with comorbidities. Interactions can reduce a medicine's effectiveness, increase side effects, or cause new problems entirely. Interaction risk rises dramatically with each additional medicine.

What you'll see: Your claimant is on multiple medicines. You notice they get worse despite "more" treatment. Or they report symptoms that don't match any single medicine but seem to emerge when medicines interact.

Side Effect Risk

Every medicine has side effects. Common side effects affect many people; rare side effects affect few. Some people tolerate side effects well; others find them intolerable. Some side effects are minor nuisances; others are severe and dangerous. Side effects depend on individual factors: genetics, age, comorbidities, and concurrent medications.

What you'll see: Your claimant reports drowsiness, dizziness, nausea, constipation, weight gain, mood changes, sexual dysfunction, or other changes after starting a medicine.

Dependency Risk

Some medicines create physical or psychological dependency. Opioids and benzodiazepines are notorious for this. After weeks or months on these medicines, stopping becomes difficult because the claimant's body has adapted to the drug's presence. Withdrawal can be medically dangerous or severely uncomfortable.

What you'll see: Your claimant has been on opioids or benzodiazepines for months. You wonder whether they still need them. Trying to reduce the dose triggers withdrawal symptoms. The claimant is "locked in" to continued use.

Polypharmacy: The Highest-Risk Situation

Polypharmacy is the use of multiple medicines simultaneously. It's not inherently bad; sometimes claimants genuinely need several medicines. But polypharmacy dramatically raises risk.

The Rule of 5: When a claimant is on 5 or more medicines, risk of problems rises exponentially. Interactions become likely. Side effects become harder to attribute to specific medicines. Overall medication appropriateness becomes questionable.

Polypharmacy Red Flags

Watch for these warning signs:

  • Claimant on 5+ medicines with unclear overall strategy
  • Multiple prescribers; no one coordinating the full regimen
  • Medicines added but never reviewed; unclear whether they're still needed
  • Multiple side effects occurring together; unclear which medicine is causing what
  • Claimant reports "I take a lot of pills and don't understand why"
  • New side effects emerging that are difficult to attribute to any single medicine

High-Risk Medications in Claims

Some medications carry higher inherent risk. You should be particularly vigilant with these:

Medicine Class Why It's High-Risk What to Watch For Action
Opioids (morphine, oxycodone, tramadol) Dependency risk; side effects; overdose potential Escalating doses; claimant "can't live without it"; constipation; drowsiness Regular review; deprescribing planning
Benzodiazepines (diazepam, alprazolam) Dependency; cognitive impairment; fall risk Long-term use; sedation; confusion; difficulty concentrating Regular review; plan safe withdrawal
Anticoagulants (warfarin, DOACs) Bleeding risk; interactions Bruising; bleeding from minor injury; interactions with NSAIDs Close monitoring; pharmacist oversight
Antidepressants (SSRIs, SNRIs, tricyclics) Side effects; interactions; sexual dysfunction Weight gain; drowsiness; sexual problems; mood changes Regular review; dose optimisation
NSAIDs (ibuprofen, naproxen, diclofenac) GI bleeding; cardiovascular risk; renal risk Abdominal pain; long-term use without monitoring Limit duration; regular review; deprescribe if possible

Age-Related Medication Risk

Older claimants face higher medication risk. As people age, their bodies metabolise medicines differently. Doses appropriate for a 40-year-old can be too high for an 80-year-old. Falls risk increases. Cognitive impacts become more apparent.

What you'll see: Your older claimant is increasingly drowsy, confused, or forgetful after starting medicines. They're falling. Their cognition is declining. These might be medication effects, not disease progression.

Medication Risk in Specific Situations

Pregnancy and Breastfeeding

Some medicines are safe in pregnancy; others are not. This affects some of your younger female claimants. If pregnancy is possible, medication safety becomes critical.

Kidney or Liver Problems

If your claimant has reduced kidney or liver function, medicine clearance is impaired. Doses accumulate. Toxicity results. Any claimant with kidney or liver disease needs careful medication management.

Multiple Comorbidities

Your claimant has diabetes, heart disease, and anxiety. Different medicines may be needed for each condition. But these conditions interact with medications. A medicine good for pain might worsen blood sugar control. A medicine for anxiety might affect heart rate.

Questions to Ask Your Claimant to Assess Medication Risk

These simple questions help you identify medication concerns:

  • "How are your medications working for you overall?"
  • "Are you experiencing any side effects?"
  • "Do you understand what each medicine is for?"
  • "Are you taking them exactly as prescribed?"
  • "Have any of your medicines been reviewed recently by a doctor?"
  • "How many different doctors are prescribing for you?"
  • "Are you taking any over-the-counter medicines or supplements?"
  • "Has anyone ever discussed whether you could reduce or stop any of these medicines?"

Listen carefully. Your claimant's lived experience is data. If they report problems, those problems are real.

The Medication Risk Assessment Process

Here's how to think through medication risk systematically:

Step 1: Count and List

Get a complete list of all medicines. Count them. If four or more, risk rises significantly.

Step 2: Understand Indications

For each medicine, understand: what condition is it treating? Is that condition still present? Is the medicine still achieving its goal?

Step 3: Screen for High-Risk Medicines

Check whether any high-risk medications (opioids, benzodiazepines, anticoagulants) are present. If so, risk rises significantly.

Step 4: Assess Side Effects and Function

Ask your claimant about side effects. Assess how medications affect their function, mood, cognition, and rehabilitation engagement.

Step 5: Consider Specialist Coordination

Are multiple specialists prescribing independently? If yes, risk of gaps, duplications, or conflicts rises.

Step 6: Decide: Do You Need Expert Help?

If risk is present (polypharmacy, high-risk medicines, side effects, poor function, lack of coordination), request a pharmacy review.

Key insight: Your job is not to make medication decisions. Your job is to identify when medication risk exists and get expert help. Trust your instincts. If you think something's wrong with the medication regimen, you're probably right.

Deprescribing: Reducing Risk Through Medication Withdrawal

Sometimes the best medication management is deprescribing: safely stopping or reducing medicines that are no longer needed or are causing more harm than benefit.

Deprescribing is not stopping medicines abruptly. It requires a plan: which medicine to stop first, how fast to reduce, what to monitor for, when to involve the doctor. For opioids and benzodiazepines, deprescribing must be slow and carefully monitored.

If you think your claimant might benefit from deprescribing, a pharmacy review can create a plan.

Get Expert Medication Risk Assessment

When you identify medication risk in your claim, don't navigate it alone. IMM's pharmacists provide expert assessment, identify problems, and recommend solutions to reduce medication-related harm and improve outcomes.

Request a Medication Review

This article was prepared by the clinical pharmacy team at IMM (Independent Medication Management), Australia's specialist provider of medication reviews for the insurance industry. IMM works with insurers across workers compensation, CTP, life insurance, and NDIS schemes to deliver pharmacist-led medication management that improves claimant outcomes and reduces medication-related risk. Learn more about IMM's services.

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