History of Present Illness (HPI) Template: OLD CARTS, OPQRST, CMS 8 Elements, and EHR Structure

A History of Present Illness (HPI) template is a structured clinical documentation framework used at the opening of the Subjective section of a SOAP note, admission history and physical (H&P), or specialty consultation note to record the chronological development of a patient’s symptoms from initial onset (or since the last clinical encounter) to the present visit. Defined by the Centers for Medicare & Medicaid Services (CMS) Evaluation and Management (E/M) Documentation Guidelines and standardized in health informatics under LOINC 10164-2 (History of Present Illness Narrative), a rigorous HPI template synthesizes symptom dimensions, pertinent positives and negatives, baseline functional status, and active chronic condition control to support diagnostic reasoning and clinical assessment synthesis.

What Should Be Included in a History of Present Illness Template?

Whether captured manually by a clinician, abstracted by a medical scribe, or synthesized by an AI medical scribe, an audit-grade HPI template reconciles three clinical and regulatory frameworks: the 8 CMS E/M HPI Elements (established in the 1995/1997 CMS Documentation Guidelines), the OLD CARTS / OPQRST clinical symptom mnemonics, and the 2021/2023 AMA CPT E/M guidelines (which require a “medically appropriate history and/or examination” while relying on documented illness severity, chronic condition stability, and treatment risk in the HPI to substantiate Medical Decision Making [MDM]).

CMS 1995/1997 HPI Element	OLD CARTS / OPQRST Mapping	Clinical Documentation Requirement	Concrete Charting Example
1. Location	Location & Radiation	Anatomical site of the primary symptom and any pathways of radiation	“Substernal chest discomfort radiating to the left medial arm and mandible”
2. Quality	Character / Quality	Sensory descriptor of the symptom (sharp, dull, throbbing, burning, pressure, colicky)	“Described as a heavy, squeezing pressure rather than sharp or pleuritic pain”
3. Severity	Severity	Quantitative pain/symptom scale (0–10 NRS) or measurable functional limitation	“Rated 7/10 at peak intensity, forcing patient to stop climbing stairs”
4. Duration	Duration & Onset	Total elapsed time since initial symptom onset or duration of individual episodes	“Began 3 days ago; individual episodes last 10 to 15 minutes before subsiding”
5. Timing	Time / Frequency Pattern	Temporal pattern (constant, intermittent, nocturnal, postprandial, morning stiffness)	“Occurs intermittently, predominantly in the early morning or during brisk walking”
6. Context	Onset Context / Mechanism	Activity, exposure, trauma, or physiological state occurring when symptoms started	“Triggered while carrying groceries up two flights of stairs in cold weather”
7. Modifying Factors	Aggravating / Relieving / Palliating & Treatments Tried	Actions, postures, or medications that worsen or alleviate the symptom	“Exacerbated by physical exertion; resolves within 5 minutes of seated rest; unimproved by antacids”
8. Associated Signs & Symptoms	Pertinent Positives & Negatives	System-specific concurrent symptoms present (positives) and red-flag symptoms absent (negatives)	“Associated with mild exertional dyspnea and diaphoresis; denies syncope, orthopnea, hemoptysis, or calf swelling”

Note on CMS Brief vs. Extended HPI Audits: Under the 1995/1997 CMS audit rules (still referenced by legacy institutional compliance audits and non-Medicare payers), a Brief HPI documents 1 to 3 of the 8 elements, whereas an Extended HPI documents either ≥ 4 of the 8 HPI elements (1995/1997) or the status of ≥ 3 chronic or inactive conditions (1997 guideline option).

Copy-Ready Clinical History of Present Illness (HPI) Templates

Template 1: Acute Symptom Presentation (OLD CARTS + Pertinent Negatives)

HISTORY OF PRESENT ILLNESS (LOINC 10164-2)
Opening Line / Context: [Age]-year-old [sex] with past medical history significant for [relevant comorbidities] presents with a chief complaint of [primary symptom] for [duration].
- Onset & Context: Symptoms began [gradually / acutely] on [date/time] while [activity or trigger at onset].
- Location & Radiation: Localized to [anatomical site], [with radiation to ___ / without radiation].
- Duration & Timing: Present for [total duration]; occurs [constantly / intermittently, frequency], with episodes lasting [duration per episode].
- Character / Quality: Described by patient as [sharp / dull / pressure / burning / throbbing / aching].
- Severity & Functional Impact: Rated [X]/10 currently ([Y]/10 at peak); interferes with [sleep / ambulation / work / oral intake].
- Aggravating & Relieving Factors: Worsened by [movement / exertion / meals / position] and relieved by [rest / position / intervention].
- Prior Treatments Tried: Patient has taken [medication name, dose, frequency] with [minimal / partial / temporary] relief.
- Pertinent Positives & Negatives: Endorses [associated symptoms]. Specifically denies [targeted red-flag symptoms for differential diagnosis].

Template 2: Chronic Disease Follow-Up (Problem-Oriented Multi-Condition HPI)

HISTORY OF PRESENT ILLNESS — CHRONIC CARE FOLLOW-UP (LOINC 10164-2)
[Age]-year-old [sex] returns for scheduled interval evaluation of chronic medical conditions. Last seen in clinic on [date].

1. [Condition 1, e.g., Type 2 Diabetes Mellitus without complications (E11.9)] — Status: [Stable / Uncontrolled / Worsening]
   - Current Regimen & Adherence: Taking [medications + doses]; reports [full adherence / missed doses due to ___].
   - Home Monitoring / Interval Data: Home fasting blood glucose ranges [X–Y mg/dL]; most recent HbA1c [Z% on date].
   - Disease-Specific Symptoms: Denies polyuria, polydipsia, hypoglycemic episodes, paresthesias, or visual changes.

2. [Condition 2, e.g., Essential Hypertension (I10)] — Status: [Stable / Worsening]
   - Current Regimen & Adherence: Taking [medications + doses] without adverse effects.
   - Home Monitoring / Interval Data: Home seated BP logs average [systolic/diastolic mmHg] over past 14 days.
   - Disease-Specific Symptoms: Denies chest pain, dyspnea on exertion, headache, or lower-extremity edema.

3. [Condition 3, e.g., Hyperlipidemia (E78.5)] — Status: [Stable]
   - Current Regimen & Adherence: Tolerating [statin + dose] nightly; denies myalgias or weakness.

How Is a History of Present Illness Template Structured in EHR Workflows?

In modern electronic medical charting and HL7 interoperability pipelines, the HPI template operates simultaneously as a human-readable clinical narrative and a machine-parseable standards container:

• HL7 C-CDA and FHIR Composition Mapping (LOINC 10164-2): In HL7 Consolidated Clinical Document Architecture (C-CDA) Continuity of Care Documents (CCDs), Consultation Notes, and HL7 FHIR Document Composition.section arrays, the History of Present Illness section is universally identified by LOINC code 10164-2 ("History of Present illness Narrative", system http://loinc.org).
• Pre-Visit Patient Intake Hydration (HL7 FHIR QuestionnaireResponse): Ambulatory EHRs (such as Epic SmartForms/SmartPhrases, Oracle Health Dynamic Documentation, and athenahealth) frequently send patients a pre-visit digital intake questionnaire encoded as an HL7 FHIR Questionnaire. When the patient completes symptom onset, pain scale, and duration questions on their mobile portal, the resulting QuestionnaireResponse pre-populates discrete EHR flowsheet variables that expand into the draft HPI template upon clinician verification.
• Avoiding “Note Bloat” and Copy-Forward Compliance Risks: The HHS Office of Inspector General (OIG) and institutional Clinical Documentation Integrity (CDI) teams actively audit EHR notes for unedited “cloned” HPI narratives copied forward across sequential encounters. Best-practice EHR templates dynamically pull only interval laboratory values and medication lists while requiring fresh encounter-specific entry of symptom progression and chronic condition stability.

Frequently Asked Questions

What should be included in a history of present illness template?

A complete History of Present Illness (HPI) template should include an opening demographic and chief-complaint statement, the 8 core symptom dimensions (Location, Quality, Severity, Duration, Timing, Context, Modifying Factors, and Associated Signs/Symptoms via OLD CARTS or OPQRST), pertinent positives and red-flag negatives, prior treatments tried, and—for follow-up visits—the current control status and medication adherence for each active chronic condition.

How is a history of present illness template structured in EHR workflows?

In EHR and health information exchange workflows, the HPI section is encoded under LOINC 10164-2 (History of Present Illness Narrative) within HL7 C-CDA and FHIR Composition documents, combines structured patient intake inputs (FHIR QuestionnaireResponse) with clinician macro or ambient AI scribe synthesis, and separates acute symptom characterization from problem-oriented chronic disease status blocks.