HLT 205 Week 4 Discussion Question Two
Two definitions and one loaded word. Perverse means the incentive worked against the payer's own goal, and explaining that mechanism is the whole post.
Editorial process
Last reviewed · August 25, 2026
Perverse means the incentive pointed the wrong way
The definitions are quick: retrospective reimbursement pays after the fact based on costs incurred or services delivered, and prospective reimbursement sets the payment in advance for a defined unit of care. The word doing the work in the prompt is perverse, which has a specific economic meaning: the incentive produced behaviour opposite to what the payer wanted. Under cost-based retrospective payment, a hospital that spent more was reimbursed more, so efficiency reduced revenue and the rational response to a payment system designed to ensure adequate care was to increase the volume and intensity of that care. That is not a story about bad actors; it is a story about a rule that made the wrong thing profitable, and framing it that way is what separates an explanation from a complaint. Naming the rule rather than the behaviour is also the difference between analysis and complaint.
Two things strengthen the post further. First, name what retrospective payment was actually solving, since it was introduced when the concern was that hospitals could not cover the cost of caring for insured patients, and a system that guarantees cost recovery removes that risk. Every payment method trades one problem for another, and saying which trade was made is the analytical move. Second, follow the incentive under prospective payment rather than presenting it as the fix, because a fixed payment per case creates its own pressures toward shorter stays, earlier discharge and favourable coding, which is why length-of-stay and readmission monitoring appeared alongside it. A post that treats prospective payment as the solution has answered half the question the prompt's own vocabulary invites. Every payment method creates incentives, and the interesting question is always which ones. That is why the readmissions penalty and length-of-stay monitoring exist at all, and mentioning them shows the point has landed.
Likely learning objectives
- Define retrospective and prospective reimbursement precisely.
- Explain perverse incentives as behaviour opposite to the payer's intent.
- Identify the problem retrospective payment was designed to solve.
- Follow the incentive created by prospective payment in turn.
Assignment instructions
Read the full question
Review every instruction before using the planning guidance that follows.
Define retrospective and prospective reimbursement methods. In what way did retrospective reimbursement contain perverse financial incentives? Cite reference to support your response.
What Week 4 DQ 2 asks for
- 01A definition of retrospective and prospective reimbursement methods.
- 02An explanation of the way retrospective reimbursement contained perverse financial incentives.
- 03A cited reference supporting the response.
Definitions, then the mechanism
Retrospective reimbursement defined
Explain payment determined after care, based on cost or service.
What the assessor is likely looking for
Timing of the payment decision made central.
Prospective reimbursement defined
Explain payment fixed in advance for a defined unit.
What the assessor is likely looking for
The unit of payment identified.
What retrospective payment solved
State the cost-recovery problem it was designed to address.
What the assessor is likely looking for
Fair treatment of the earlier system.
The perverse mechanism
Show how efficiency reduced revenue and volume raised it.
What the assessor is likely looking for
A mechanism, not an accusation.
What changed with prospective payment
Explain the transfer of financial risk to the provider.
What the assessor is likely looking for
Risk transfer named explicitly.
The new incentives
Identify pressures on length of stay, discharge and coding.
What the assessor is likely looking for
Awareness that every method creates incentives.
Where the payment history sits
Recommended databases
- CMS
- PubMed Central
- KFF
- NCBI Bookshelf
Search sequence
- 1.Read the CMS prospective payment material for the mechanism and its introduction.
- 2.Find literature on cost-based reimbursement and its incentives.
- 3.Look up evidence on length of stay and readmissions after prospective payment.
- 4.Check a source on bundled payment for the current version of the same debate.
Reference shortlist
These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.
Prospective Payment Systems
Centers for Medicare & Medicaid Services · 2025
Prospective payment systems, for the mechanism and the unit of payment.
DRG payment, financial signals, and low-value hospitalizations
Frontiers in Public Health · 2026
DRG payment and financial signals, for the incentives prospective payment creates.
BPCI Advanced
Centers for Medicare & Medicaid Services · 2024
Bundled payments, for the contemporary version of the same design question.
The impact of hospital pay-for-performance on hospital and Medicare costs
Health Services Research · 2012
Pay-for-performance and costs, for evidence on whether incentive design changes behaviour.
Hospital Readmissions Reduction Program
Centers for Medicare & Medicaid Services · 2025
The readmissions programme, as a correction to a prospective payment incentive.
Before you post
Common mistakes
- Defining both methods and never explaining the perversity.
- Attributing the incentive problem to provider bad faith.
- Ignoring what retrospective payment was introduced to solve.
- Presenting prospective payment as free of incentive problems.
- Posting without the citation the prompt requires.
Submission checklist
- Are both methods defined by when the payment amount is set?
- Is the perverse mechanism explained rather than named?
- Is the original problem retrospective payment solved stated?
- Are prospective payment's own incentives addressed?
- Is a reference cited?
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Written by
Maren Caldwell
MSN, RN, CNE
Medical-surgical nursing, pharmacology and NCLEX preparation
Maren is a registered nurse with over 15 years of clinical and educational experience in medical-surgical nursing. She writes on NCLEX preparation, patient care fundamentals, pharmacology and evidence-based practice.

Reviewed by
Dr. Tessa Redmond
DNP, RN, CNE
Evidence-based practice and clinical education
Tessa is a doctorally-prepared nurse educator. She reviews Brinevia content for clinical accuracy and alignment with current evidence-based guidelines.