Artificial Disc Repl denials: 9.8% overturned by independent reviewers
In 244 California IMR decisions from 2005 to 2025, reviewers overturned the plan 24 times (9.8%). In the last five years: 22.2% of 54. Denials reach IMR only when a member appeals all the way; read the caveats below before generalising.
By diagnosis
| Diagnosis category | Decisions | Overturned | Last 5 years |
|---|---|---|---|
| Orth/Musculoskeletal | 239 | 9.6% | 21.6% of 51 |
By year (last five)
| Year | Decisions | Overturned |
|---|---|---|
| 2021 | 15 | 40.0% |
| 2022 | 6 | 16.7% |
| 2023 | 10 | 20.0% |
| 2024 | 9 | 0.0% |
| 2025 | 14 | 21.4% |
What the findings mention
| What the findings mention | Decisions | Overturned | All decisions here |
|---|---|---|---|
| Published evidence citedThe findings refer to peer-reviewed or published evidence. | 103 | 18.4% | 9.8% |
| Experimental or investigationalThe findings discuss whether the treatment is experimental. | 45 | 2.2% | 9.8% |
| Prior therapies failedThe findings mention treatments that were tried without adequate response. | 28 | 21.4% | 9.8% |
| Alternatives contraindicatedThe findings mention a contraindication to the plan's preferred option. | 24 | 12.5% | 9.8% |
| Records did not supportThe findings say the documentation did not show what was needed (usually an upheld denial). | 14 | 0.0% | 9.8% |
| FDA approval or off-label use discussedThe findings discuss the FDA label status of the treatment. | 12 | 0.0% | 9.8% |
| Guidelines or criteria citedThe findings cite guidelines, criteria or a standard of care. | 8 | 12.5% | 9.8% |
Keyword matches on the reviewer’s findings, not causes. A tag that appears mostly in overturned decisions is worth documenting in an appeal; it is not a guarantee.
From recent overturned decisions
“The physician reviewer found that Nature of Statutory Criteria/Case Summary:A patient has requested authorization and coverage for cervical total disc arthroplasty. Clinical guidelines support surgical intervention in patients with persistent symptoms of cervical radiculopathy that correlate with imaging findings and have not adequately responded to conservative treatment. Cervical disc arthroplasty is an established and effective surgical option in appropriately selected …”
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested reimbursement for a total disc arthroplasty procedure. Lumbar disc replacement is indicated for symptomatic degenerative disc disease and for patients with persistent symptoms despite prior surgical and conservative treatments. Medical literature demonstrates improvement in pain and functional outcomes following total disc arthroplasty. In this case, the …”
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested authorization and coverage for two-level artificial disc replacement at L4-L5 and L5-S1 with the Prodisc-L device. The published data on disc replacement shows good long-term outcomes for lumbar disc replacement for patients with discogenic low back pain with or without radiculopathy that is limited to up …”
- California only: these are decisions by independent reviewers under California's IMR program (plans regulated by the Department of Managed Health Care). Other states and self-funded employer plans use different reviewers and rules.
- Selection: only denials that a member took all the way to IMR appear. Most denials are never appealed, and the ones that reach an external reviewer are not a random sample.
- Overturned means the reviewer disagreed with the plan; it does not mean the treatment worked or that a similar request will be approved.
- Argument tags are keyword matches on the reviewer's findings. They describe what the findings mention, not why the case was decided.
- Categories are DMHC's own labels (treatment sub-category and diagnosis category); 'Other' is a catch-all and is excluded from rankings.
Source: California Department of Managed Health Care, Independent Medical Review (IMR) Determinations, Trend (CHHS Open Data). Public California government data; Apellica's aggregates and tags are CC BY 4.0.
Questions
How often were Artificial Disc Repl denials overturned?
In 244 California IMR decisions from 2005 to 2025, reviewers overturned the plan 24 times (9.8%). In the last five years: 22.2% of 54.
What did the reviewers' findings mention in overturned cases?
The table on this page counts keyword matches in the findings: prior therapies tried, contraindications, guidelines cited, published evidence, whether the records supported the request. They describe what the findings say, not why the case was decided.
Does a California IMR result apply to my plan?
Only California plans regulated by the Department of Managed Health Care go to IMR. Other states and self-funded employer plans use different reviewers, but the reasoning is the same kind: criteria, documentation and alternatives. Use the findings as a guide to what to document.
Related: California appeal rights · California external-review reversal rate · The levers library · CSV
Independent reviewers reverse plans when the record answers the criteria. Upload the denial letter; a senior reviewer reads it within 24 hours and tells you in writing whether it can be appealed and how. $0 upfront, 10% of what is recovered, nothing if we do not recover. Not a law firm.