12.2 Medical Terminology & Clinical Record Interpretation

ABMDI Registry Certification Diplomate

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1 Chapter 1: Medicolegal Authority, Systems & Inter-Agency Coordination

1.1 Medical Examiner vs. Coroner Systems & Statutory Authority 1.2 Statutory Reportable Deaths & Mandatory Referrals 1.3 Inter-Agency Coordination & Jurisdictional Boundaries 1.4 Establishing the Decedent Profile & Essential Case Information 1.5 Funeral Homes, Removal Services & Ancillary Agency Coordination

2 Chapter 2: Communication, Death Notification & Documentation

2.1 Death Notification Protocols & Family Interaction 2.2 Witness Interviewing & Information Gathering 2.3 Written Reports, Public Records & Professional Communication 2.4 Preparing Families for Identification Viewing & Explaining Procedures 2.5 Facilitating Family Requests & Releasing Investigative Findings

3 Chapter 3: Scene Response, Security & Documentation

3.1 Initial Notification, Scene Assessment & Safety 3.2 Scene Photography & Systematic Visual Documentation 3.3 Scene Sketching, Mapping & Evidence Spatial Analysis 3.4 Professionalism, Dignity of the Deceased & Scene Conduct

4 Chapter 4: Postmortem Changes, Decomposition & Postmortem Interval (PMI)

4.1 Algor Mortis & Body Cooling Dynamics 4.2 Rigor Mortis, Livor Mortis & Cadaveric Spasm 4.3 Decomposition Stages & Environmental Taphonomy 4.4 Forensic Entomology & Environmental Markers

5 Chapter 5: Evidence Preservation, Toxicology & Chain of Custody

5.1 Trace Evidence, Personal Effects & Body Packaging 5.2 Postmortem Toxicology Principles & Specimen Collection 5.3 Overdose Investigations & Pharmacological Indicators

6 Chapter 6: Forensic Identification, Anthropology & NamUs

6.1 Scientific Identification Modalities 6.2 Secondary Identification & Medical Hardware 6.3 Unidentified Decedents, Forensic Anthropology & NamUs

7 Chapter 7: Trauma Typology & Forensic Pathology Principles

7.1 Sharp Force Trauma & Wound Characteristics 7.2 Blunt Force Trauma Typology 7.3 Gunshot Wounds & Range of Fire 7.4 Asphyxial Deaths & Environmental Trauma

8 Chapter 8: Cause, Manner & Pediatric Death Investigation

8.1 Cause, Mechanism, and Manner of Death Certification 8.2 Sudden Unexpected Infant Death Investigation (SUIDI) 8.3 Pediatric Non-Accidental Trauma & Fatal Neglect

9 Chapter 9: Special Investigations, Mass Fatalities & Legal/Ethical Responsibilities

9.1 In-Custody, Institutional & Occupational Deaths 9.2 Mass Fatality Incidents & Disaster Response 9.3 Legal Standards, Expert Testimony & Investigator Ethics 9.4 Investigator Health, Wellness & Occupational Stress

10 Chapter 10: Systematic Body Assessment, Documentation & Medical Artifacts

10.1 Anatomical Terminology & Systematic Body Mapping 10.2 Body Examination Photography & Morgue Intake Documentation 10.3 Resuscitative, Therapeutic & Surgical Artifacts

11 Chapter 11: Completing the Investigation - Follow-Up, Pathology Liaison & Case Closure

11.1 Case Follow-Up, Required Forms & Records Acquisition 11.2 Interacting with Forensic Pathologists & the Autopsy Process 11.3 Evidence Release, Property Return & Final Disposition of Remains

12 Chapter 12: Forensic Science Foundations & Medical Knowledge

12.1 Forensic Science Disciplines & Crime Laboratory Coordination 12.2 Medical Terminology & Clinical Record Interpretation 12.3 Natural Disease Processes & Sudden Unexpected Natural Death

12.2 Medical Terminology & Clinical Record Interpretation

Key Takeaways Explain This Topic AI

Medical terms are built from a root, an optional prefix, and a suffix, so an unfamiliar term can usually be decoded rather than memorized: hepatosplenomegaly is liver plus spleen plus enlargement.

The suffix carries the action or condition, and the distinctions that matter forensically are narrow: -otomy is an incision, -ectomy is a removal, and -ostomy is a surgically created opening.

A decedent's medication list is a readable medical history; furosemide with metoprolol and an implanted defibrillator describes heart failure even when no diagnosis is documented.

Anticoagulants such as warfarin and apixaban convert minor trauma into fatal hemorrhage and must be flagged to the pathologist in any case involving a fall or head strike.

Investigators use medical terminology to describe findings accurately but must not use diagnostic terms that assert a determination reserved to the pathologist or certifier.

Last updated: September 2026

12.2 Medical Terminology & Clinical Record Interpretation

The ABMDI task list requires investigators to understand basic medical terminology and disease processes as a component of Forensic and Medical Knowledge. This is not academic. An investigator who cannot read "s/p CABG x3, EF 25%, on Eliquis for AFib" cannot brief a pathologist, cannot recognize what the medications imply, and cannot ask a family the right follow-up question.

Medical terminology is decodable. Learn the construction rules and the high-yield components, and most unfamiliar terms resolve on sight.

1. Word Construction
Term = (prefix) + root + (combining vowel) + suffix

Root carries the core meaning, usually an organ or tissue.

Prefix modifies — location, number, timing, negation.

Suffix supplies the action, condition, or procedure.

The combining vowel, usually o , joins a root to a consonant-initial suffix: cardi-o-megaly .

Worked decodings:

hepat/o (liver) + splen/o (spleen) + -megaly (enlargement) = hepatosplenomegaly : enlarged liver and spleen.

sub- (beneath) + arachnoid (the arachnoid membrane) + hemorrhage = subarachnoid hemorrhage : bleeding beneath the arachnoid membrane.

peri- (around) + cardi/o (heart) + -al = pericardial ; blood in that space is a hemopericardium , which produces cardiac tamponade .

a- (without) + sphyx (pulse) + -ia = asphyxia .

athero- (fatty plaque) + scler/o (hardening) + -osis (condition) = atherosclerosis .

2. High-Yield Roots

Root Meaning Root Meaning
cardi/o heart hepat/o liver
angi/o, vas/o vessel nephr/o, ren/o kidney
pulmon/o, pneum/o lung, air gastr/o stomach
encephal/o brain enter/o intestine
mening/o meninges oste/o bone
my/o muscle derm/o, cutane/o skin
neur/o nerve hem/o, hemat/o blood
cyt/o cell thorac/o chest
cerebr/o cerebrum arthr/o joint
tox/o poison phleb/o, ven/o vein
3. High-Yield Prefixes and Suffixes

Prefixes: a-/an- (without), brady- (slow), tachy- (fast), hyper- (above, excessive), hypo- (below, deficient), peri- (around), epi- (upon), sub- (beneath), endo- (within), intra- (inside), extra- (outside), poly- (many), dys- (difficult, abnormal), hemi- (half), contra- (against, opposite), ante- (before), post- (after), trans- (across).

Suffixes:

Suffix Meaning Example
itis inflammation myocarditis, meningitis
osis abnormal condition atherosclerosis, cirrhosis
emia blood condition anemia, uremia, hypoglycemia
pathy disease cardiomyopathy, neuropathy
otomy cutting into thoracotomy, craniotomy
ectomy surgical removal appendectomy, splenectomy
ostomy surgically created opening colostomy, tracheostomy
plasty surgical repair angioplasty
megaly enlargement cardiomegaly
oma tumor, mass hematoma, carcinoma
algia pain myalgia
rrhage, -rrhagia bursting forth, bleeding hemorrhage
sclerosis hardening nephrosclerosis
pnea breathing dyspnea, apnea
uria urine condition hematuria, anuria
stenosis narrowing aortic stenosis
plegia paralysis hemiplegia
emesis vomiting hematemesis

The -otomy / -ectomy / -ostomy trio is the distinction most frequently tested, because confusing them changes what was done to a body. A tracheotomy is the incision; a tracheostomy is the resulting opening; a lobectomy removed a lobe.

4. Terms an Investigator Meets in Records

Term Plain meaning

Atherosclerotic cardiovascular disease (ASCVD) Narrowing of arteries by plaque; the leading cause of sudden natural death in adults

Myocardial infarction Heart muscle death from interrupted blood supply
Cardiomegaly Enlarged heart, commonly from hypertension
Cardiomyopathy Primary disease of the heart muscle
Congestive heart failure Heart cannot pump adequately; fluid accumulates
Atrial fibrillation Irregular atrial rhythm; a stroke risk treated with anticoagulation
Cerebrovascular accident Stroke, ischemic or hemorrhagic
Intracerebral hemorrhage Bleeding into brain tissue, classically hypertensive
Subdural hematoma Blood between dura and arachnoid, often from bridging vein tearing
Pulmonary thromboembolism Clot, usually from a leg vein, lodged in the pulmonary circulation
Chronic obstructive pulmonary disease Emphysema and chronic bronchitis
Aspiration pneumonia Lung infection from inhaled material
Cirrhosis End-stage liver scarring; causes esophageal varices
Esophageal varices Dilated esophageal veins that can bleed catastrophically
Diabetic ketoacidosis Severe insulin deficiency with ketone accumulation
Sepsis Life-threatening organ dysfunction from infection
Uremia Retained nitrogenous waste from kidney failure
Status epilepticus Prolonged or repeated seizure activity

Common record abbreviations: Hx history, Dx diagnosis, Rx prescription, Tx treatment, s/p status post, c/o complains of, NKA no known allergies, SOB shortness of breath, HTN hypertension, CAD coronary artery disease, CHF congestive heart failure, DM2 type 2 diabetes, CVA stroke, PE pulmonary embolism, ETOH ethanol, CABG coronary artery bypass graft, EF ejection fraction, DNR do not resuscitate, POLST physician orders for life-sustaining treatment, NPO nothing by mouth.

Some abbreviations are formally discouraged in clinical writing because they are misread — U for units, IU , QD , QOD , MS , and any trailing zero after a decimal point. Investigators should transcribe them as written and then spell out the meaning, never silently "correct" a record.

5. Reading the Medication List as a Medical History

A pill bottle inventory is a diagnosis list when no diagnosis list exists.

Medication Implied condition Forensic relevance
Metoprolol, carvedilol, lisinopril Hypertension, heart failure, post-infarction Supports cardiac natural death
Furosemide Fluid overload, heart failure Supports cardiac natural death

Warfarin, apixaban, rivaroxaban, clopidogrel Anticoagulation or antiplatelet therapy Minor head trauma can produce fatal hemorrhage; flag in every fall case

Insulin, metformin Diabetes Consider hypoglycemia and ketoacidosis; check for pumps and glucometers
Levothyroxine Hypothyroidism Rarely causal
Albuterol inhaler, home oxygen Asthma, COPD Supports respiratory natural death

Phenytoin, levetiracetam, valproate Seizure disorder Consider sudden unexpected death in epilepsy; drug levels are relevant

Methadone, buprenorphine Opioid use disorder treatment Both treatment and toxicologic significance

Oxycodone, hydromorphone, fentanyl patches Opioid analgesia Count applied and discarded patches; patches are routinely missed

Alprazolam, clonazepam Anxiety, seizure Additive respiratory depression with opioids

Clozapine, olanzapine, lithium Serious psychiatric illness Lithium and clozapine have narrow therapeutic ranges

Naloxone in the residence Known overdose risk Document whether it was deployed
Sildenafil with nitrates Contraindicated combination Cardiovascular collapse risk

Devices are also history. A dialysis fistula indicates end-stage renal disease. A continuous positive airway pressure machine indicates sleep apnea. A glucometer with a logbook can date the last reading. An implanted defibrillator stores the terminal rhythm.

6. Using the Vocabulary Without Overstepping

Precision is the goal; diagnosis is not the investigator's role.

Correct: "Decedent had a documented history of atherosclerotic cardiovascular disease with coronary artery bypass grafting in 2019 and an ejection fraction of 25 percent per the 2026 cardiology note."

Incorrect: "Decedent died of a heart attack."
Correct: "A 6 cm area of purple discoloration overlies the left temporal scalp."
Incorrect: "Decedent sustained a contrecoup injury."

State what the record says and attribute it. State what you observed and describe it. Leave the diagnosis to the person who performs the examination and signs the certificate.