reconciling-inpatient-medications

name	reconciling-inpatient-medications
description	Compares admission, inpatient, and discharge medication lists to identify discrepancies. Use when performing medication reconciliation, identifying med changes, or verifying discharge prescriptions.
tags	["reconciliation","hospital-medicine","patient-care"]
metadata	{"author":"casemark","practice_areas":["Hospital Medicine","Internal Medicine"],"document_types":["Reconciliation Report"],"skill_modes":["Reconciliation"]}

Reconciling Inpatient Medications

Why This Skill Exists

Medication discrepancies at care transitions cause approximately 50% of all hospital medication errors and up to 20% of adverse drug events. Inpatient medication reconciliation is distinct from pharmacy cross-setting reconciliation: it operates within the hospital stay lifecycle across three critical transition points — admission, transfer, and discharge — each with unique failure modes. Unreconciled medications lead to therapeutic duplications, omitted chronic therapies, drug interactions, and preventable readmissions. Joint Commission NPSG.03.06.01 mandates reconciliation at every transition of care. This skill enforces a structured, auditable process that catches discrepancies before they reach the patient.

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Checkpoint A: Pre-Draft Intake (Mandatory)

Before beginning reconciliation, collect and confirm the following. Do NOT proceed until every required item is addressed or explicitly marked unavailable.

A1. Identify Transition Point

Transition	Source List	Target List	Key Risk
Admission	Best Possible Medication History (BPMH)	Admission orders	Omission of chronic meds; inappropriate continuation of home meds
Transfer	Sending-unit MAR	Receiving-unit orders	IV-to-PO conversion failures; dose drift from organ function changes
Discharge	Active inpatient MAR	Discharge prescriptions	Held meds not restarted; new meds missing from Rx; duplications

State the transition type explicitly in all output.

A2. Gather Available Medication Lists

Required sources (mark [UNAVAILABLE] if absent — never silently omit):

• BPMH: Patient/caregiver interview, community pharmacy records, PCP med list, prior discharge summaries, pill bottles/med cards
• Active MAR: Current medication administration record from EHR
• Admission/Transfer/Discharge orders: The target order set for the transition
• Allergy and adverse reaction list: Including severity and reaction type
• Relevant labs: Renal function (CrCl/eGFR), hepatic function (LFTs), INR/anti-Xa, drug levels, A1c, electrolytes

A3. Assess Patient Complexity

Flag any of the following — each increases reconciliation error probability:

• Polypharmacy (10+ medications)
• High-risk medication classes present (see below)
• Renal or hepatic impairment requiring dose adjustment
• Multiple prescribers / care teams
• Cognitive impairment or limited health literacy
• Recent ICU stay
• Substance use history affecting medication selection
• Non-formulary medications on home list

High-risk medication classes (require line-by-line verification):

Class	Examples	Specific Risk
Anticoagulants	warfarin, DOACs, heparin, enoxaparin	Bleeding / thrombosis if omitted or duplicated
Insulin / diabetes agents	insulin (all types), sulfonylureas, SGLT2i	Hypo/hyperglycemia; sulfonylureas often held inpatient
Cardiac medications	beta-blockers, antiarrhythmics, digoxin	Rebound tachycardia, arrhythmia if abruptly stopped
Seizure medications	levetiracetam, phenytoin, valproic acid	Seizure breakthrough; narrow therapeutic indices
Immunosuppressants	tacrolimus, mycophenolate, cyclosporine	Rejection / toxicity; level-dependent dosing
Opioids / controlled substances	oxycodone, methadone, buprenorphine	Withdrawal; diversion risk; dose conversion errors
Corticosteroids	prednisone, hydrocortisone, dexamethasone	Adrenal crisis if abruptly stopped after prolonged use

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Workflow

Step 1: Normalize Medication Data

For every medication on every source list, capture these seven fields. Missing fields get [VERIFY].

Field	Description
Medication	Generic name (note brand if relevant for narrow therapeutic index)
Dose	Numeric dose with unit
Route	PO, IV, SQ, IM, topical, inhaled, etc.
Frequency	Specific schedule (not just "as directed")
Indication	Why the patient takes it — required for disposition decisions
Status	Active, held, discontinued, new, changed
Source	Which list(s) this medication appears on

Step 2: Cross-Reference and Match

Align medications across source and target lists. For each medication, assign one disposition:

Disposition	Definition	When to Use
Continued	Same med, dose, route, frequency	No change needed across transition
Modified	Same med, different dose/route/frequency	Dose adjustment, IV→PO conversion, frequency change
Substituted	Different med, same therapeutic class	Formulary swap (e.g., home atorvastatin → hospital rosuvastatin)
Held	Intentionally paused	NPO status, perioperative, acute kidney injury, etc.
Discontinued	Stopped permanently	No longer indicated, adverse effect, therapeutic change
Omitted	On source list but absent from target with no documented reason	This is the primary error to catch
New	On target list but not on source	Started during this encounter

Step 3: Transition-Specific Checks

Admission (Home → Inpatient)

• Compare every BPMH medication against admission orders
• Flag chronic medications not ordered on admission (unintentional omission vs. intentional hold)
• Verify home PRN medications are addressed — do not silently drop
• Check for therapeutic substitutions and confirm equivalent dosing
• Confirm allergy list matches home records
• Flag OTC medications, supplements, and herbals that may interact

Transfer (Unit → Unit)

• Map all IV continuous infusions to floor-appropriate equivalents (e.g., IV diltiazem drip → PO diltiazem ER)
• Recalculate renal-dose adjustments if function has changed since admission
• Verify ICU-specific medications are appropriately discontinued (e.g., propofol, vasopressors)
• Confirm stress ulcer prophylaxis is reassessed (discontinue if no longer indicated)
• Check VTE prophylaxis transitions (e.g., heparin drip → enoxaparin)

Discharge (Inpatient → Home/Facility)

• Every pre-admission medication must have an explicit disposition: continued, modified, held (with restart plan), or discontinued (with reason)
• All new medications started during stay must appear on discharge Rx with indication and duration
• Held medications: document whether to restart, when, and at what dose
• Verify discharge doses account for any inpatient adjustments (e.g., uptitrated beta-blocker)
• Confirm no inpatient-only medications are sent home (e.g., IV antibiotics without OPAT plan, heparin SQ prophylactic dose)
• Cross-check discharge Rx against active MAR at time of discharge

Step 4: Generate Discrepancy Report

For every discrepancy found, document:

Field	Content
Medication	Drug name and dose
Discrepancy type	Omission, duplication, dose mismatch, route mismatch, interaction, unaddressed hold
Source	Which list(s) show the conflict
Severity	Critical (high-risk class or immediate harm potential), Major (clinical significance), Minor (documentation gap)
Recommended action	Specific resolution with rationale
Status	Open, resolved, escalated

Step 5: Compile Reconciled Medication List

Produce the final reconciled list using the template in references/INPATIENT-MED-REC-TEMPLATE.md. Every medication on the final list must have all seven fields populated. No [VERIFY] tags may remain in the final output — unresolved items must be escalated.

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Output Templates

Reconciliation Summary Header

MEDICATION RECONCILIATION — [TRANSITION TYPE]
Patient: [ID/Name]       Date: [YYYY-MM-DD]
Transition: [Admission / Transfer (from → to) / Discharge]
Total Source Medications: [N]    Total Target Medications: [N]
Discrepancies Found: [N]  (Critical: [N] | Major: [N] | Minor: [N])
High-Risk Classes Present: [list]
Reconciler: [Name/Role]    Verifier: [Name/Role]

I-PASS Integration for Handoff

When reconciliation accompanies a handoff, structure the medication summary using I-PASS:

Element	Medication Reconciliation Content
Illness severity	Patient acuity and medication complexity tier
Patient summary	Key diagnoses driving medication regimen
Action list	Discrepancies requiring resolution; pending medication decisions
Situation awareness	High-risk medications; drug levels pending; renal function trend
Synthesis	Anticipated medication changes in next 12-24 hours

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Checkpoint B: Post-Draft Alignment (Mandatory)

After generating the reconciled list, verify every item below. Do not finalize until all pass.

• Every source medication has an explicit disposition (no medication silently dropped)
• Every high-risk medication class present has been individually verified
• All discrepancies are categorized by severity and have a recommended action
• Held medications include a restart plan or explicit discontinuation rationale
• New medications include indication and intended duration
• Therapeutic substitutions include dose-equivalence confirmation
• Allergy/adverse reaction list is consistent across all sources
• Route and frequency are clinically appropriate for the care setting (no IV meds on a floor discharge, no TID dosing for a once-daily drug)
• Output uses standardized terminology — no abbreviations on the Joint Commission "Do Not Use" list
• All [VERIFY] tags resolved or escalated to human review

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Quality Audit

Compliance Anchors

Standard	Requirement	How This Skill Addresses It
Joint Commission NPSG.03.06.01	Maintain accurate medication list; reconcile at transitions	Structured reconciliation at admission, transfer, discharge
CMS CoP §482.24(c)	Medication orders reviewed for appropriateness	Disposition table with indication and rationale
WHO High 5s: Medication Reconciliation	Systematic BPMH; compare against orders	BPMH as mandatory source; cross-reference workflow

Error-Prevention Checklist

Error Type	Detection Method
Omission of chronic med	Source-to-target gap analysis (Step 2, "Omitted" disposition)
Therapeutic duplication	Same-class check across all lists
Dose/route mismatch	Field-by-field comparison in normalization (Step 1)
Held med not restarted at discharge	Discharge-specific check (Step 3, Discharge section)
IV med on discharge Rx	Route validation against care setting
Formulary swap without dose equivalence	Substitution verification (Step 2, "Substituted" disposition)
Drug-drug interaction introduced	New-medication interaction screen

Known Limitations

• This skill does not replace pharmacist clinical judgment — all critical discrepancies require human verification
• Drug interaction screening depends on completeness of the medication list provided
• OTC, supplement, and herbal product history is frequently incomplete — flag this gap explicitly
• Dose equivalence for therapeutic substitutions should be confirmed against current formulary references
• This skill does not calculate renal/hepatic dose adjustments — it flags the need for them

When to Escalate to Human Review

• Any critical-severity discrepancy
• Patient on 3+ high-risk medication classes simultaneously
• Conflicting information between sources that cannot be resolved from available data
• Medication identified that the agent has low confidence in (unfamiliar drug, unusual dose)
• Any controlled substance discrepancy

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Guidelines

• Always verify high-alert medications (anticoagulants, insulin, opioids, immunosuppressants, antiarrhythmics) individually at every transition point — never batch-reconcile these classes with lower-risk medications.
• Formulary substitutions must include documented dose-equivalence rationale. When substituting therapeutic equivalents (e.g., home atorvastatin → hospital rosuvastatin), record the conversion basis and alert the patient to the temporary change.
• Discharge medication lists must be finalized and reconciled within 2 hours of the discharge order. Delays beyond this window increase the risk of the patient leaving with an outdated or incomplete medication list.
• Held medications require an explicit restart plan at discharge — including the restart date, dose, and any monitoring required. A medication marked "held" without a disposition at discharge is a reconciliation failure.
• For patients on 3+ controlled substances, perform an independent verification against the state Prescription Drug Monitoring Program (PDMP) database before finalizing the discharge medication list.
• Every reconciliation must be performed or verified by a licensed pharmacist or credentialed provider. AI-generated reconciliation output is a draft tool, not a final clinical document, until human attestation is completed.
• When conflicting information exists between the patient-reported medication history and pharmacy records, document both versions and escalate to the prescribing provider for resolution rather than choosing one source over the other.
• Non-formulary home medications that cannot be therapeutically substituted must be flagged for the discharge planning team at least 24 hours before anticipated discharge to ensure prescription coverage and pharmacy availability.