Insurhi Research
2026 Common Denial Reasons & Documentation Gaps
Patterns are drawn from Insurhi's anonymized case library, 43 public playbooks, and editor-reviewed denial vocabulary—not carrier marketing materials or paid placement data.
Flagship research report
2026 Common Denial Reasons & Documentation Gaps
Published 2026-08-27 · Insurhi claims research brief — six coverage lines
Patterns are drawn from Insurhi's anonymized case library, 43 public playbooks, and editor-reviewed denial vocabulary—not carrier marketing materials or paid placement data.
Auto
Late notice, liability disputes, and incomplete evidence packages
Common denial patterns
- Late notice / prejudice arguments when FNOL exceeds policy windows
- Comparative negligence reservations on UM/UIM after liability limits tender
- Total-loss valuation gaps without comparable vehicle data
- Supplement denials for teardown damage not on the initial estimate
Documentation gaps
- Scene photos without embedded timestamps or metadata
- Missing police report or witness statements on disputed fault
- Repair estimates that omit line-item parts and labor codes
- No written follow-up when adjuster promises phone-only updates
FNOL & documentationDenial & appealUM / UIM & liabilityTotal loss valuation
Home
Gradual damage, depreciation holdbacks, and mitigation disputes
Common denial patterns
- Gradual vs. sudden water damage classification
- Recoverable depreciation withheld pending completion docs
- Mold/fungi sub-limits applied after a covered water event
- Ordinance-and-law upgrades denied without code citations
Documentation gaps
- No plumber cause-and-origin report for pipe failures
- Missing moisture logs during drying
- Incomplete lien waivers blocking depreciation release
- Contractor scopes that do not match carrier line items
Water & moistureHail & windFire & smokeMold & fungi
Life
Contestability reviews and beneficiary documentation delays
Common denial patterns
- Contestability denials citing pharmacy or APS mismatches
- Material misrepresentation allegations on health disclosures
- Beneficiary disputes when probate or multiple heirs are involved
- Accelerated benefit denials for incomplete physician statements
Documentation gaps
- Medical records not organized chronologically
- Medication lists that do not match application answers
- Missing certified death certificates or claim forms
- No written response to each underwriting request item
Life contestabilityBeneficiary & probateDenial & appeal
Medicare & supplement
Billing errors, prior auth, and network disputes
Common denial patterns
- Duplicate CPT lines on hospital outpatient bills
- Prior authorization denials for DME or procedures
- Skilled nursing coinsurance billed to the wrong payer
- Out-of-network emergency charges without mediation
Documentation gaps
- Itemized bills missing revenue codes or modifiers
- No written appeal to the provider billing office first
- Missing physician orders supporting medical necessity
- EOB comparisons without crossover payment proof
Billing & coding disputePrior authorizationSub-limits & caps
Pet
Pre-existing, waiting periods, and mixed invoices
Common denial patterns
- Pre-existing condition denials from wellness note mentions
- Illness waiting-period denials on ER visits
- Bilateral or breed-specific exclusions applied broadly
- Dental or wellness lines denied on combined invoices
Documentation gaps
- Incomplete vet records from prior clinics
- No veterinarian letter distinguishing acute vs. chronic
- Invoices without diagnosis and procedure separation
- Missing enrollment and waiting-period confirmation dates
Pre-existing & waiting periodEmergency careDenial & appeal
Renters
Theft proof gaps, mold caps, and sub-limits
Common denial patterns
- Theft claims denied for insufficient ownership proof
- Mold remediation capped or excluded after water events
- Roommate property excluded from named insured coverage
- Loss-of-use disputes without habitability documentation
Documentation gaps
- Police reports filed outside 24–48 hour windows
- Inventories without bank or cloud serial backup
- No landlord correspondence on repair access
- Proof-of-loss forms missing sub-limit categories
Theft & proof of ownershipMold & fungiSub-limits & capsDenial & appeal
Continue exploring
Explore the underlying case library and playbooks cited in this report.