A history of present illness (HPI) is the chronological description of a patient’s current medical concern: when it began, how it developed, what symptoms are present, what has already been tried, and why the patient is seeking care now. A strong HPI turns the patient’s account into a concise clinical narrative another clinician can quickly understand.
The HPI should usually read as a clear, chronological narrative rather than a list of disconnected answers.
What Is a History of Present Illness?
The HPI is the section of a medical note that describes the development of the patient’s current complaint from its onset through the present encounter.
- The primary symptom or concern
- When and how it began
- How it has changed over time
- Location and symptom characteristics
- Severity and functional impact
- Aggravating and relieving factors
- Associated symptoms
- Pertinent negatives
- Treatments attempted and their effects
- The patient’s current status
The HPI should be a concise, chronological narrative. For example, a chief complaint might read “Right knee pain,” while the HPI explains onset, mechanism, swelling, aggravating factors, treatments tried, and functional impact.
What Does HPI Mean in Medical Terms?
HPI stands for history of present illness and appears in many clinical documents. Its purpose is to organize information most relevant to the patient’s current concern; it is not a full medical history.
- History and physical notes
- SOAP notes
- Consultation notes
- Emergency department notes
- Progress notes
- Primary care notes
- Specialist reports
- Physical therapy evaluations
- Behavioral health assessments
- Sports medicine notes
What Should an HPI Include?
The exact elements depend on the complaint and specialty. Most HPIs should address the following clinically relevant elements.
Onset
- Date or approximate time of onset
- What the patient was doing at the time
- Whether there was an injury, exposure, medication change, or other trigger
- Whether similar episodes occurred previously
Chronology and progression
- Gradually worsened, improved, or remained stable
- Intermittent versus constant
- Spread or localization over time
- Often the most important organizing feature
Location and radiation
- Where the symptom occurs (e.g., anterior right knee, substernal chest)
- Whether it radiates or is generalized
- Include laterality when relevant
Quality or character
- Sharp, dull, burning, throbbing, pressure-like, cramping, aching, tight, numb, unstable
- Preserve the patient’s description when possible
Severity and functional impact
- Numeric pain rating paired with functional effects (e.g., cannot bear weight, missed work)
- Functional limitations often provide more meaningful context than pain score alone
Timing
- Constant or intermittent
- Worse at certain times (morning, night)
- Triggered by activity or meals
- Duration of episodes (seconds, minutes, hours) and frequency changes
Context and precipitating factors
- Falls, sports injury, repetitive motion, recent travel, infection exposure
- New medications, surgery, emotional stress, missed medication, diet or activity changes
- For injuries, document mechanism when known
Aggravating and relieving factors
- Common aggravators: walking, lifting, deep breathing, eating, lying flat, joint movement, stress
- Common relievers: rest, medication, heat/ice, position changes, stretching, hydration, activity modification
Associated symptoms and pertinent negatives
Include symptoms that occur with the complaint and select pertinent negatives that help clarify risk, urgency, or possible causes. Avoid long lists of unrelated denials.
Treatments attempted and response
- Document relevant interventions (medications, rest, ice/heat, PT, bracing, prior procedures)
- Include whether the treatment helped, had no effect, or caused side effects
Current status and reason for the visit
Conclude the HPI by explaining why the patient is seeking care now (e.g., worsening symptoms, functional limitation, review of medication).
Source and reliability of the history
- Document who provided the information when necessary (patient, family member, EMS, prior records)
- Note reliability if relevant (e.g., limited recall)
HPI Frameworks: OLDCARTS, OPQRST, LOCATES, and SOCRATES
Frameworks can help clinicians remember questions but should not force every encounter into the same structure. They are interviewing aids; the finished HPI should read as a natural clinical story.
- OLDCARTS: Onset, Location, Duration, Character, Aggravating, Relieving, Timing, Severity
- OPQRST: Onset, Provoking/Palliating, Quality, Region/Radiation, Severity, Timing
- LOCATES: Location, Other associated symptoms, Character, Aggravating/Alleviating, Timing, Environment/Context, Severity
- SOCRATES: Site, Onset, Character, Radiation, Associated symptoms, Timing, Exacerbating/Relieving, Severity
How to Write an HPI
- Start with the presenting concern and introduce the patient when relevant (age/medical context).
- Establish the onset: when it began and what was happening.
- Describe the symptom: location, quality, severity, timing, radiation.
- Explain progression: how it changed since onset.
- Add context and treatments: triggers, interventions, and responses.
- Include associated symptoms and pertinent negatives that clarify the complaint.
- End with the current status and reason for the visit.
The completed HPI should be concise, chronological, and focused on the present problem.
HPI Examples
Acute complaint
A 34-year-old patient presents with a two-day history of sore throat and fever. Symptoms began gradually Monday morning with throat irritation and fatigue. By that evening the patient had a temperature of 38.4°C and increasing pain with swallowing. The pain is constant, rated 6/10, worse with solids. Tender neck glands and mild headache are present; the patient denies cough, shortness of breath, chest pain, rash, nausea, or vomiting. Ibuprofen provided temporary relief. The patient presents because pain and difficulty swallowing have worsened.
Injury
A 21-year-old recreational soccer player presents with right knee pain after a non-contact injury five days ago. The patient felt a sudden pop while changing direction; swelling developed within two hours and prevented further play. Pain localizes to the medial and anterior knee, aggravated by stairs, squatting, and pivoting, with intermittent instability. Denies locking, numbness, or prior right knee injury. Ice and ibuprofen reduced swelling but not instability. The patient seeks evaluation because the knee continues to give way during walking.
Chronic-condition follow-up
A 58-year-old patient returns for hypertension follow-up. Since the last visit six weeks ago the patient has taken the prescribed medication daily. Home BP readings range 128–138/78–86. Denies headaches, dizziness, chest pain, shortness of breath, or leg swelling. Mild fatigue resolved after the first week. The patient has reduced sodium intake and exercises regularly. Presenting to review blood pressure control and medication tolerance.
Behavioral health
A 29-year-old patient reports two months of worsening anxiety after a job change: excessive worry most days, poor concentration, muscle tension, and insomnia, worse before work meetings and interfering with job performance. Sleeps ~5 hours/night (baseline 7–8). Breathing exercises give brief relief. Denies recent substance use, mania, hallucinations, or suicidal ideation. Seeking care because symptoms are difficult to manage independently.
HPI Templates
Use templates as flexible starting points and adapt them to clinical relevance.
[Patient description] presents with [chief concern] that began [onset]. The problem started [suddenly or gradually and relevant context] and has since [improved, worsened, fluctuated, or remained stable]. The symptom is located [location] and described as [quality], with a severity of [rating and functional effect]. It occurs [timing or frequency], is aggravated by [factors], and is relieved by [factors]. Associated symptoms include [pertinent positives]. The patient denies [pertinent negatives]. The patient has tried [treatments], resulting in [response or side effects]. Relevant context includes [medical history, exposure, medication, injury, or prior episode]. The patient presents today because [current status and reason for the encounter].
[Patient] presents with [duration] of [chief concern] that began [onset and context]. Symptoms are described as [character, location, and severity], are worsened by [factors], and improved by [factors]. Associated symptoms include [positives]; the patient denies [pertinent negatives]. [Treatment] provided [response]. The patient seeks care today because [reason].
HPI vs Chief Complaint, ROS, and Past Medical History
The chief complaint is the brief reason for the encounter (e.g., “Left shoulder pain”). The HPI is the detailed account of that complaint. The ROS is a broader symptom inventory organized by system; relevant associated symptoms and pertinent negatives belong in the HPI when they directly relate to the presenting problem. Past medical history belongs elsewhere unless it directly affects the current issue.
Does the HPI Determine E/M Coding?
A complete HPI supports care and documentation, but current office/outpatient E/M code selection is generally based on medical decision-making or total time rather than counting HPI elements. Clinicians should follow applicable payer and jurisdictional requirements.
Common HPI Mistakes
- Repeating the chief complaint instead of expanding it into a narrative.
- Writing a checklist of OLDCARTS fields rather than a readable timeline.
- Losing the timeline by jumping between events without sequence.
- Including irrelevant medical history that does not affect the current problem.
- Omitting functional impact (mobility, sleep, work, self-care).
- Adding excessive, unrelated pertinent negatives.
- Mixing patient reports with objective exam findings.
- Copying forward outdated information without review.
- Failing to identify the historian when information comes from others.
- Accepting AI-generated HPI without clinician review and verification.
Frequently Asked Questions About HPI
- What does HPI stand for? — History of present illness.
- What is an HPI in a medical note? — The chronological account of the patient’s current complaint with onset, progression, characteristics, context, and present status.
- How do you write an HPI? — Start with the presenting concern, establish onset, describe symptoms, explain progression, add context and treatments, include associated symptoms/pertinent negatives, and end with current status.
- How long should an HPI be? — As long as needed to communicate clinically relevant details; brief follow-ups may need one short paragraph, complex cases several paragraphs.
- What should be included? — Onset, chronology, location, quality, severity, timing, context, modifying factors, associated symptoms, pertinent negatives, treatments tried, functional impact, and reason for visit.
- Should the HPI include past medical history? — Only when it directly affects the current concern.
- Should the HPI include pertinent negatives? — Yes, when they help assess risk, urgency, or likely causes.
- Can an HPI be written before the appointment? — Intake forms and prior records can provide information, but clinicians should review and verify in the encounter.
HPI Documentation Checklist
- Clearly identifies the presenting concern.
- Follows a logical timeline.
- Includes relevant symptom characteristics.
- Describes functional impact when appropriate.
- Contains focused associated symptoms and pertinent negatives.
- Documents treatment attempts and responses.
- Distinguishes patient reports from examination findings.
- Identifies the information source when necessary.
- Explains why the patient is seeking care now.
- Has been reviewed for accuracy.