A medical chronology is a date-ordered summary of a person’s medical treatment, built from their records, where every entry points back to the page it came from. In workers’ compensation, personal injury, and medical malpractice work, it is the document everyone relies on and nobody enjoys building.
What a medical chronology is for
It answers the questions a claim turns on: when the injury happened, what treatment followed, who said what about causation and work status, and where the records disagree. Built well, it lets an attorney walk into a deposition or hearing knowing the medical story without re-reading the file.
The template: what every entry needs
- Date of service: the date care was given, never the date the record was received or printed.
- Provider and facility: the treating physician, examiner, or facility, spelled the same way every time.
- Record type: office visit, operative report, imaging, therapy note, IME, QME, billing, and so on.
- Findings and diagnosis: the clinically relevant content in plain language, with diagnosis codes when present.
- Work status and restrictions: full duty, modified duty, temporary total disability, and any specific limits.
- Causation and apportionment opinions: who attributed what to the work injury, and in what percentage.
- Source citation: file name and page number, so every line can be checked.
- Notes: flags for gaps in care, conflicting opinions, or missing records.
Put those eight columns in a spreadsheet, one row per record, and you have a working template. Or start from ours:
CSVMedical chronology templateEight columns, two example rows. Opens in Excel, Numbers or Google Sheets.A sample chronology
The entries below are invented for illustration and describe no real person. They show the level of detail and the citation habit that make a chronology useful.
| Date of service | Provider | Findings | Work status | Causation | Source |
|---|---|---|---|---|---|
| 03/14/2025 | Occupational clinic | Right shoulder strain after lifting a 60 lb box | Modified duty, no lifting over 10 lb | — | Intake_Records.pdf p. 12 |
| 04/02/2025 | MRI, right shoulder | Partial-thickness supraspinatus tear; mild degenerative AC arthrosis | — | — | Imaging.pdf p. 3 |
| 06/18/2025 | Treating orthopedist | Recommends arthroscopic repair | Temporary total disability pending surgery | 100% industrial | Ortho_Notes.pdf pp. 44–46 |
| 09/05/2025 | Panel QME | Agrees surgery is indicated | — | 20% to pre-existing degeneration. Conflicts with treating opinion | QME_Report.pdf pp. 18–21 |
That last flag is the reason the chronology exists. A conflict on apportionment is worth money, and it only shows up when the opinions sit side by side in date order.
How to build one, step by step
- Collect everything first: treatment records, billing, imaging, IME and QME reports, deposition exhibits.
- Split combined PDFs into individual documents and remove exact duplicates, keeping a log of what was removed.
- Date every document by date of service. Where dates conflict, record both.
- Summarize each document into the template columns, keeping the provider’s own words for opinions.
- Cite the page for every entry. An entry without a citation gets re-checked, which spends the time you saved.
- Read the finished chronology for conflicts: causation, apportionment, MMI dates, work status, and gaps in treatment.
Common mistakes
- Ordering by the date records arrived instead of the date care was given.
- Paraphrasing opinions so loosely that the doctor’s actual position is lost.
- Leaving out billing records, which often fill gaps in the clinical timeline.
- Dropping citations to save space.
- Treating the chronology as finished instead of updating it when new records arrive.
By hand or with software
Most of the time spent on a chronology goes to sorting, deduplicating, and dating pages, and very little to judgment. Software can take that mechanical pass: split the bundle, date and classify each document, draft the entries, and link each one to its page. A person then reviews the draft against the sources and makes the judgment calls. Either way the standard is the same: every line traceable to a page.
A chronology you can’t cite is a chronology you’ll end up rebuilding.
Frequently asked questions
What is the difference between a medical chronology and a medical summary?
A summary condenses the records. A chronology orders them by date of service so the sequence of care and opinions is visible. Many firms keep both: the chronology as the reference and a short narrative summary on top.
Who prepares medical chronologies?
Paralegals, legal nurse consultants, outside chronology services, and increasingly software that drafts the chronology for a person to review.
Is there a free medical chronology template?
Yes: the eight columns above are a complete template. If you would rather see one built from your own file, Workplex will prepare a free chronology from a closed or redacted claim.