Concepts of Diseases

Course Description

Concepts of Diseases develops the ability, given a body of medical information, to interpret, understand, extract, analyze, and synthesize information within the medical record. It is pathophysiology taught for the health information professional: disease processes studied not to treat them, but to read, code, and analyze the documentation that describes them.

Within the SCNS taxonomy, HIM is the Health Information Management prefix. Daytona State publishes this at 4 credits, prerequisite HSC1531, offered spring, giving approximately 60 contact hours at the standard lecture ratio.

The verbs in that catalog description are the whole course. Interpret, extract, analyze, synthesize — this is not memorizing diseases, it is learning to work inside a medical record and understand what the clinical narrative actually says. A coder who does not understand pathophysiology assigns codes by keyword matching, and keyword matching produces wrong codes, denied claims, and — at the population level — wrong data about what is making people ill.

Learning Outcomes

Required Outcomes

• Describe the mechanisms of disease, including etiology, pathogenesis, and manifestation.
• Distinguish signs, symptoms, syndromes, and diagnoses.
• Describe inflammation, infection, and the immune response.
• Describe neoplasia, tumour behaviour, staging, and grading.
• Describe genetic and congenital disorders.
• Describe diseases of the cardiovascular system and their documentation.
• Describe diseases of the respiratory system.
• Describe diseases of the digestive system.
• Describe diseases of the endocrine system, including diabetes mellitus and its complications.
• Describe diseases of the nervous system.
• Describe diseases of the musculoskeletal system.
• Describe diseases of the genitourinary system.
• Describe diseases of the integumentary system.
• Describe haematologic and lymphatic disorders.
• Describe mental and behavioural health conditions and substance use disorders.
• Describe conditions of pregnancy, childbirth, and the neonatal period.
• Describe injury, poisoning, and external causes.
• Interpret diagnostic test results, including laboratory values and imaging reports.
• Interpret pharmacology as documented in the record and relate medications to conditions.
• Navigate the components of the health record and identify where information resides.
• Extract clinically relevant information from documentation accurately.
• Distinguish confirmed diagnoses from suspected, ruled-out, and historical conditions.
• Identify insufficient or conflicting documentation and describe the query process.
• Relate disease processes to diagnostic and procedural classification systems.
• Apply confidentiality and privacy requirements to health information.

Optional Outcomes

• Describe clinical documentation improvement practice.
• Describe severity of illness and risk of mortality concepts.
• Describe quality measures and their reliance on documentation.
• Describe cancer registry and disease registry practice.
• Describe epidemiology and public health reporting.
• Describe emerging treatments and their documentation implications.

Major Topics

Required Topics

• Mechanisms of disease
• Signs, symptoms, syndromes, and diagnoses
• Inflammation, infection, and immunity
• Neoplasia, staging, and grading
• Genetic and congenital disorders
• Cardiovascular disease
• Respiratory disease
• Digestive disease
• Endocrine disease and diabetes
• Neurological disease
• Musculoskeletal disease
• Genitourinary disease
• Integumentary disease
• Haematologic and lymphatic disorders
• Mental, behavioural, and substance use disorders
• Pregnancy, childbirth, and the neonate
• Injury, poisoning, and external causes
• Diagnostic tests, laboratory values, and imaging
• Pharmacology in the record
• Structure of the health record
• Information extraction
• Confirmed, suspected, ruled-out, and historical conditions
• Documentation deficiency and the query process
• Relating disease to classification systems
• Privacy and confidentiality

Optional Topics

• Clinical documentation improvement
• Severity of illness and risk of mortality
• Quality measures
• Registries
• Epidemiology and public health reporting
• Emerging treatment and documentation

Resources & Tools

• Pathophysiology for the Health Professions (Gould & Dyer) — the most common text for exactly this kind of course.
• Human Diseases (Neighbors & Tannehill-Jones) — written for health information and allied health students specifically.
• Essentials of Human Diseases and Conditions (Frazier & Drzymkowski) — the other common choice.
• The Language of Medicine (Chabner) — carry your medical terminology text forward; you will use it constantly.
• Merck Manual Professional Version (merckmanuals.com) — free, authoritative, and the fastest way to look up a disease process properly.
• MedlinePlus and StatPearls (via PubMed) — free, reliable clinical references.
• CDC and NIH — free disease information and surveillance data.
• CMS (cms.gov) — free: ICD-10-CM/PCS official guidelines, coding updates, and the annual code set. The Official Guidelines for Coding and Reporting are free and authoritative — read them rather than a summary.
• AHIMA (ahima.org) — the professional body; RHIT and CCS credential information, practice briefs, and student membership.
• AAPC (aapc.com) — the CPC credential; strong on physician-office coding.
• Anki — free spaced repetition. Disease processes, laboratory value ranges, and terminology are volume memorization and this is the efficient method.
• A drug reference — Epocrates or Davis's Drug Guide; medications in the record are diagnostic clues and learning to read them is a real skill.

Career Pathways

• Medical coder — inpatient, outpatient, and professional fee; SOC 29-2072 Medical Records Specialists.
• Registered Health Information Technician (RHIT) — the AHIMA credential tied to an accredited A.S. programme; the standard destination for this coursework.
• Certified Coding Specialist (CCS) — the inpatient coding credential and the better-paid one.
• Clinical documentation improvement specialist — reviewing records concurrently and querying providers; this course is the direct foundation, and CDI is among the best-paid non-clinical roles in a hospital.
• Health information technician and medical records specialist.
• Cancer registrar — a distinct credentialed specialization (CTR) with strong demand and often remote work.
• Medical auditor and compliance analyst.
• Revenue cycle analyst and denials management.
• Health data analyst — with additional analytics skills, a substantially higher ceiling.
• Risk adjustment and HCC coding — a large and growing area tied to Medicare Advantage, and Florida's demographics make it particularly active here.
• Remote work is genuinely common in coding, which is unusual in healthcare and is a real quality-of-life advantage. Florida's large hospital systems, its enormous Medicare population, and its health insurance sector make the state a strong market.

Special Information

⚠⚠ You are not diagnosing — the boundary is the profession

• Coders and health information professionals do not make clinical judgements. You code what the provider documented, and the boundary is strict.
• Never code from a laboratory value, an imaging finding, or a medication alone. An elevated blood glucose is not a diagnosis of diabetes; an antibiotic is not a diagnosis of infection; a radiologist's impression is not the attending's diagnosis. This is the single most common error in learning to code, and it is a compliance violation, not just a mistake.
• The physician query is the correct mechanism when documentation is ambiguous, incomplete, conflicting, or clinically inconsistent. Queries must be non-leading — you may present the clinical indicators and ask for clarification; you may not suggest the answer or indicate which answer pays better.
• AHIMA and ACDIS publish practice briefs on compliant query practice, and they are the standard. Learn the format now.
• Understanding pathophysiology is what makes a good query possible. You cannot recognize that documentation is clinically inconsistent unless you know what the disease process should look like — which is exactly why this course exists.
• Distinguish confirmed from suspected, ruled-out, and historical conditions. The rules differ between inpatient and outpatient settings, and getting this wrong is both a data quality and a compliance problem.
• Document your queries and the responses. The query trail is part of the record and is auditable.

⚠⚠ Coding accuracy is a legal matter — upcoding is fraud

• Codes determine payment, and deliberately assigning codes that overstate severity or services is healthcare fraud under the False Claims Act, with civil and criminal exposure.
• Upcoding, unbundling, and coding for services not documented are the classic violations, and enforcement is vigorous. Florida has been a focus of federal healthcare fraud enforcement for many years given its size and its Medicare population.
• "My supervisor told me to" is not a defence. Coders have personal exposure, and this is a real career risk that students should know about before they encounter pressure.
• Undercoding is also wrong. It misstates the patient's severity, distorts quality and outcome measures, and deprives the organization of legitimate payment. The goal is accuracy, not a direction.
• Know your escalation path — compliance officer, hotline, and the protections available to those who report in good faith.
• Follow the Official Guidelines for Coding and Reporting. They are free, they are authoritative, and they resolve most disputes about what is correct.
• Credentialed professionals are bound by a code of ethics — AHIMA's and AAPC's both address exactly this, and violation can cost the credential.
• Documentation supports the code, not the reverse. If it is not documented, it did not happen, and no amount of clinical certainty substitutes.

⚠ How to study this — disease processes, not disease lists

• The volume is large and the temptation is to memorize lists. Resist it. Learn the process — what goes wrong, what that causes, what the patient therefore experiences, and what a clinician therefore does about it. Everything else follows.
• Build each condition the same way: etiology, pathophysiology, signs and symptoms, diagnostic findings, treatment, complications. A consistent template makes an enormous body of material tractable and makes comparison possible.
• Terminology is the vocabulary you think in. If you are still decoding word parts, everything else is slower. Your medical terminology course was the prerequisite for a reason — keep the text and drill the gaps.
• Learn normal laboratory ranges and what abnormal means. These recur constantly and are worth committing to memory.
• Learn medications by class and by what they treat. A drug list in a record tells you a great deal about a patient's conditions, and it is one of the fastest ways to spot documentation that does not add up.
• Diabetes and its complications deserve disproportionate attention. It affects every body system, it is enormously common, its coding is complex and heavily audited, and Florida's population makes it ubiquitous in the records you will see.
• Use spaced repetition for the memorization layer and case reading for the reasoning layer. Both are necessary; neither is sufficient.
• Read real de-identified records if your programme provides them. The gap between a textbook description and how a condition actually appears in a hurried progress note is the real difficulty of this work.
• This is a 4-credit course for a reason. It is one of the heavier courses in a health information programme; plan the time.

⚠ HIPAA is not a formality in this role

• Health information professionals have access to everything, which makes the privacy obligation heavier than for most healthcare roles.
• Access only what you need for your work. Looking up a family member, a neighbour, a colleague, or a public figure is a terminable offence and a HIPAA violation, and access is logged and audited. People are dismissed for this regularly.
• The minimum necessary standard governs use and disclosure of protected health information.
• Remote work raises the stakes. Coding from home requires a private workspace, secure connections, locked screens, and no household member glancing at a monitor. Employers audit this.
• Breach notification obligations are real and reporting a mistake promptly is far better than concealing it.
• Even in coursework, treat sample records as real. The habits you build now are the ones you will have under pressure.
• Rule 11 applies — privacy rules, information blocking provisions, and interoperability requirements have changed substantially in recent years. Verify current requirements.

⚠ Classification systems change annually — learn the structure, not the codes

• ICD-10-CM and ICD-10-PCS are updated every year, with new, revised, and deleted codes effective on a fixed date. CPT is updated annually as well.
• Do not memorize codes. Learn the structure, the conventions, the index-then-tabular process, and the guidelines. Codes change; the method does not.
• ICD-10-CM specificity is driven by clinical detail — laterality, episode of care, and manifestation — which is precisely why documentation quality and pathophysiology knowledge matter so much.
• ICD-11 exists internationally, and United States adoption timing remains uncertain. Rule 11 applies — do not assume a timeline from any course material.
• Computer-assisted coding and increasingly AI-assisted tools are in wide use, and they change the job rather than eliminating it. The work shifts toward review, validation, and handling what the software gets wrong — and the coders who can do that are the ones who understand disease processes rather than keyword patterns.
• That is the honest career framing. Routine, straightforward coding is increasingly automated; complex inpatient coding, CDI, auditing, and analytics are not. Aim at the parts that require judgement.
• Credentials matter in this field more than in most — RHIT, CCS, CPC, and CDI credentials are what employers screen on, and they require continuing education to maintain.

How Florida course levels affect transfer

The first digit of an SCNS number denotes the year of offering, not transferability. Courses at the 1000 and 2000 levels transfer transparently between Florida public institutions, and 3000 to 4000 is unproblematic since both are upper division. The boundary that actually matters is 2000 to 3000, where lower-division credit generally cannot satisfy an upper-division requirement.

HIM2430 is 4 credits and approximately 60 contact hours, offered spring, with prerequisite HSC1531 Medical Terminology. Expect heavy examination on disease processes plus case-based record analysis — the catalog's emphasis on interpreting and synthesizing information from a medical record suggests applied work rather than pure recall, which is the right design.

Health information A.S. degrees are applied and do not carry the A.A.'s junior-status guarantee, though several Florida institutions offer well-articulated B.S. completion programmes in health information management. The consideration that outweighs transfer is programme accreditation: RHIT eligibility requires graduation from a CAHIIM-accredited programme. Confirm accreditation before enrolling anywhere.