How to Appeal “Lack of Clinical Progress” and “Plateau” Denials

For rehabilitation therapists, behavioral health providers, and skilled nursing facilities, one of the most frustrating denials to receive is “Lack of Clinical Progress.”

Insurance adjusters often argue that because a patient has “plateaued” and is no longer hitting new clinical milestones, their continued care is no longer medically necessary. This leaves providers in an ethical bind: discharge a vulnerable patient who will inevitably regress without care, or continue treating them knowing the claim will likely be denied.

The good news? The idea that a patient must show constant, linear improvement to qualify for care is often legally and medically flawed. Here is how to fight “plateau” denials, justify maintenance therapy, and win your appeals.

The “improvement standard” fallacy

Historically, many payers operated under the assumption that they only needed to cover services if the patient demonstrated a clear, consistent trajectory of improvement.

However, in the landmark Jimmo v. Sebelius class-action settlement, a federal court explicitly rejected this “Improvement Standard” for Medicare beneficiaries. The ruling clarified a critical precedent for the entire healthcare industry: skilled care coverage does not depend on the patient’s potential for improvement, but rather on the patient’s need for skilled care.

While Jimmo strictly applies to Medicare, its precedent serves as a powerful lever when appealing to Medicare Advantage plans and commercial payers. Skilled care is medically necessary if it is required to:

Improve a patient’s condition.
Maintain a patient’s current condition.
Prevent or slow the deterioration of a patient’s condition.

If a commercial payer denies your claim because the patient has “plateaued,” they are often ignoring the medical necessity of maintenance therapy.

How to structure a “maintenance” appeal

When writing an appeal for a patient who lacks forward clinical progress, your strategy must pivot. You are no longer proving that the patient will get better; you must prove that without your skilled intervention, the patient will suffer severe regression.

1. Document the risk of regression

Your appeal letter must explicitly state what will happen if care is terminated. Do not use vague terms like “the patient may decline.” Be highly specific:

Weak: “If therapy ends, the patient’s mobility will worsen.”
Strong: “If skilled physical therapy is terminated, the patient is at a severe risk for contractures, a loss of independent transfers, and an increased risk of falls requiring emergency hospitalization.”

2. Emphasize the need for skilled intervention

Payers will often argue that if the patient is just maintaining their baseline, a caregiver or family member can perform the routine. Your documentation must prove why the intervention requires a licensed professional.

Highlight complexities: note any comorbidities, behavioral risks, or severe safety concerns (for example, severe swallowing deficits, elopement risks, or complex pain management) that make caregiver-led maintenance unsafe or impossible.

3. Present non-linear data honestly

Progress is rarely a straight line. If you are a behavioral health or ABA provider, a patient might plateau in acquiring new communication skills but still require intense intervention to suppress dangerous behaviors. Ensure your appeal highlights the prevention of negative outcomes as a form of clinical success, rather than solely focusing on the acquisition of new skills.

4. Cite the payer’s own maintenance guidelines

Review the payer’s specific medical policy bulletin. Many commercial payers have quietly updated their guidelines to include criteria for maintenance therapy (often hidden deep within their manuals). Quote their own language back to them in your appeal letter to prove your patient meets the criteria for preventing deterioration.

How to stop fighting “plateau” denials manually

Appealing a “lack of progress” denial requires you to sift through legal precedents like Jimmo v. Sebelius, track down specific payer guidelines on maintenance therapy, and carefully word your documentation to emphasize regression risks. For a busy practice, this can take hours per claim.

This is exactly why we built Appealant.

Our platform is designed to instantly recognize unfair “plateau” and “lack of progress” denials. Instead of writing a defense from scratch, Appealant automatically flags the risk of regression in your clinical notes and generates an appeal that explicitly cites the necessary legal and medical precedents required to justify maintenance care.

Stop letting insurance companies dictate when your patients are finished with treatment. Let Appealant handle the bureaucracy so you can focus on providing the care your patients deserve.