Appealing a 'not medically necessary' denial

'Not medically necessary' is the broadest denial reason, and it rarely means the reviewer thinks the patient is well. More often it means the request did not show how the case meets a specific criterion. The appeal that works finds that criterion and answers it with facts from the chart.

First, find out which criterion failed

Read the denial notice closely. Many notices name the clinical policy or criteria set used, or say which element was not met, such as duration of prior treatment, severity, or a required test. If the notice is vague, ask the reviewing organisation for the criteria applied; many will provide them on request. A peer-to-peer discussion with the reviewing clinician, where offered, is often the quickest way to learn exactly what was missing.

Until you know the criterion, any appeal is a guess.

Build the appeal around the criteria

1. List each criterion. Write them down in the reviewer's order.
2. Match a chart fact to each. A date, a value, a score or a report. If one cannot be matched, note it honestly.
3. Add anything new. Results or events since the first request, such as a further failed treatment or a worsening score.
4. Explain exceptions. If the patient does not meet a criterion for a clinical reason, such as a contraindication to a required first-line drug, state the reason and its evidence.
5. Keep it clinical and short. Name the service, the denial reason, the answer, and the request to overturn.

Example

Re: Appeal of refusal for a continuous glucose monitor, stated reason: not medically necessary, frequent hypoglycaemia not demonstrated.

Diagnoses: Type 1 diabetes mellitus with hypoglycaemia without coma (E10.649).

[Patient initials], 34, on multiple daily insulin injections for 16 years. The original request described hypoglycaemia in general terms. The details are:
- Four episodes needing third-party assistance in the last 6 months, two attended by paramedics.
- Reduced awareness of hypoglycaemia, documented at the last two clinic visits with a validated awareness score.
- Capillary glucose testing 8 to 10 times a day, with 14 readings below 3.0 mmol/L in the last month despite two insulin dose reductions.

These facts show frequent and severe hypoglycaemia with impaired awareness. Continuous monitoring is requested to reduce the risk of further severe episodes.

The appeal quotes the denial reason in the first line and answers it with dated, countable events. It does not restate the whole history.

Mistakes that weaken an appeal

• Sending the same letter again, longer.
• Arguing that the reviewer is wrong instead of showing the facts they did not have.
• Adding claims the chart does not support; a reviewer who checks the notes will find the gap.
• Leaving out the denial reference and the exact service refused, which slows the process.
• Missing the appeal deadline in the notice.

Using Rejection Analysis

In ClearPass, paste the original note or letter and the denial wording into Rejection Analysis. It names the criterion most likely to have failed, asks for facts only you have, then offers a Targeted Fix, which rewrites the justification and codes for the refused items, or a Full Rewrite of the note and letter. Where no rules pack exists for your country, it reasons from clinical necessity and does not invent a policy number. It cannot promise the decision will change. See the insurance denial appeal overview for the full workflow.

What ClearPass does not do

• It does not replace your judgement. Every note is an AI draft that you review and correct before it is used.
• It is not a medical device and does not make clinical decisions. It is a documentation aid.
• It does not connect to your EMR. The note is copy-ready text that pastes into any system.

Privacy

Clinical note content is not stored on ClearPass servers: it is processed to write the note, then discarded. Consultation audio is transcribed and discarded, never stored. Your note history stays in your browser, on your device, and you choose how long it is kept. Common identifiers are removed from typed and transcribed text before it reaches the AI; that is a best-effort safeguard, so leave names, ID numbers and file numbers out where you can. Processing goes through the AI providers named in our Privacy Policy, which sets out exactly what each one receives and how long it keeps it. ClearPass does not sign HIPAA business associate agreements today.

Questions

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• Answer an insurance denial with the criterion it failed
• Responding to a denial for missing documentation
• How to write a letter of medical necessity
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