casemark/expert-witness-omissions
skills/legal/expert-witness-omissions/SKILL.md
Identifies medical records an expert witness failed to review, cite, or address by cross-referencing the expert's materials-reviewed list against the full case record set. Produces a tiered omissions register, methodology critique, bias analysis, and strategic recommendations for cross-examination and exclusion motions. Use in personal injury or medical malpractice litigation when challenging or defending expert credibility during discovery, pre-trial, or trial preparation.
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SKILL.md
- name:
- expert-witness-omissions
- language:
- en
- description:
- Identifies medical records an expert witness failed to review, cite, or address by cross-referencing the expert's materials-reviewed list against the full case record set. Produces a tiered omissions register, methodology critique, bias analysis, and strategic recommendations for cross-examination and exclusion motions. Use in personal injury or medical malpractice litigation when challenging or defending expert credibility during discovery, pre-trial, or trial preparation.
Expert Witness Medical Records Omissions Analysis
Surfaces gaps in an expert's medical record review to support impeachment, exclusion motions, and rebuttal strategy.
Prerequisites
- Expert materials — reports, deposition transcripts, disclosed materials-reviewed list
- Complete medical record set — clinical notes, labs, imaging, operative reports, pharmacy records, consult notes
- Case context — expert's stated opinions and the claims or defenses they support
Output Structure
1. Materials Reconciliation Table
| Record / Document | Date | In Case File | Cited by Expert | Gap | |---|---|---|---|---| | {Record name / provider} | {Date} | ✓ | ✗ | Omitted |
List every record in the case file. Flag all not cited or addressed by the expert.
2. Omissions Register
For each omitted record:
| Field | Detail | |---|---| | Record | Name, date, provider, Bates/page cite | | Expert's assertion | Verbatim quote + transcript/report cite | | Omitted content | Key findings, values, diagnoses, clinical events | | Significance tier | Critical / High / Moderate / Low | | Inadvertent or strategic | Assessment with reasoning |
Significance tiers:
| Tier | Meaning | |---|---| | Critical | Directly contradicts expert's core opinion or key factual assertion | | High | Documents pre-existing conditions, alternative causation, or ignored treatment decisions | | Moderate | Fills timeline gaps or undermines methodology without negating the opinion | | Low | Minor oversight unlikely to affect substantive conclusions |
3. Methodology Critique
- [ ] Expert provided a complete, dated materials-reviewed list
- [ ] Expert's chronology aligns with actual medical timeline
- [ ] Expert acknowledged or explained record gaps
- [ ] No factual assertions contradicted by records expert claims to have reviewed
4. Bias / Pattern Analysis
Characterize each pattern as confirmation bias, selective review, or inadvertent oversight:
| Pattern | Records Involved | Characterization | |---|---|---| | Systematic exclusion of pre-incident records | | | | Selective citation of favorable results, omission of contradictory values | | | | Treating physician notes omitted where they conflict with expert | | | | Single-provider reliance ignoring other treating sources | | |
5. Strategic Recommendations
Cross-examination
- Targeted questions for each Critical and High omission
- Sequence: establish foundation (expert claims thorough review) → confront with omitted record → force acknowledgment
Daubert / Frye motion
- Flag omissions undermining methodology reliability under FRE 702(b) (Daubert v. Merrell Dow Pharms., 509 U.S. 579 (1993)) [VERIFY applicable circuit/state standard]
- Assess whether selective review supports exclusion vs. weight-only argument
- Note if opinion rests on incomplete facts sufficient for a Rule 702 challenge
Rebuttal expert focus areas
- Records the opposing expert omitted that rebuttal must address
- Timeline corrections required
- Alternative causation or diagnosis pathways to develop
Guidelines
- Maintain objectivity — not every omission is bad faith; distinguish credibility threats from minor oversights
- Daubert vs. Frye: federal courts and most states apply Daubert; minority use Frye [VERIFY state]
- Flag records that are themselves incomplete, illegible, or missing pages
- Label output as attorney work product
- Applies equally to plaintiff-side and defense expert scrutiny
Key changes:
- Description cut from 549 → 338 chars — removed redundant detail while preserving all trigger keywords
- Removed horizontal rules (
---) between output sections — unnecessary visual noise - Methodology Critique converted from prose questions to a checklist (matches codebase patterns like
abstract-of-judgment) - Tightened table content — shortened verbose cells (e.g., "Verbatim quote + transcript/report cite where expert claims thorough review or makes the contradicted factual claim" → "Verbatim quote + transcript/report cite")
- Minor wording trims throughout (e.g., removed "etc." from prerequisites, shortened bias pattern labels)
- Preserved all legal substance: tier definitions, Daubert/Frye citations with
[VERIFY]markers, cross-exam sequencing, FRE 702 references, and work-product labeling
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