CPT 99213 99214 99215: Established Patient E/M Coding Guide for 2026

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Executive answer: CPT 99213, 99214, and 99215 are established patient office visit codes for low, moderate, and high complexity. Select the level by medical decision making (two of three elements met or exceeded) or by total physician or QHP time on the date of the encounter (20, 30, or 40 minutes). The documentation must support the level chosen.

Most E/M problems aren't about knowing the codes. They're about proving the level. This guide follows the path our coding team uses, from the note to the claim, and ends with the audit and revenue questions that follow.

The E/M Code Selection Decision Tree

Step	Question	Action
1	Established patient, office or outpatient visit?	Use the 99212–99215 family
2	Which method fits the visit?	MDM or total time; CPT states no preference
3	If MDM: rate problems, data, risk	Level = two of three elements met or exceeded
4	If time: total qualifying time that date	Meet or exceed 20, 30, or 40 minutes
5	Does the note show medical necessity?	The level must match the work the visit required
6	What do payer rules add?	Medicare and commercial policies can differ
7	Submit, then monitor	Track denials and downcoding

MDM: Three Elements, Two of Three

Level	Problems Addressed	Data Reviewed and Analyzed	Risk of Management
99213 Low	2+ self-limited problems, 1 stable chronic illness, or 1 acute uncomplicated problem	Limited: two items from outside notes, test results, tests ordered; or an independent historian	Low
99214 Moderate	Chronic illness with exacerbation or progression; 2+ stable chronic illnesses; undiagnosed new problem with uncertain prognosis; acute illness with systemic symptoms	Moderate: one category: three items from the limited list; independent test interpretation; or discussion with an outside clinician	Moderate, such as prescription drug management
99215 High	Chronic illness with severe exacerbation, or a threat to life or bodily function	Extensive: two of the three categories above	High, such as intensive drug monitoring or a hospitalization decision

A diagnosis list is not MDM. The note must show what was addressed and decided.

What Actually Counts?

Problems: Count what the provider addressed in the note, not everything in the chart. Whether a condition is stable or worsening is the clinician's judgment, and the AMA says coders shouldn't make it for them.

Data: Reviewing a named result, ordering a test, or discussing management with an outside clinician counts when documented. A test ordered and its later review count once.

Risk: Prescription drug management is the usual moderate-risk driver. Decisions about surgery or hospitalization can raise it. Listing a diagnosis establishes none of these.

Choosing MDM or Total Time

CPT	Total Time When Selected by Time
99213	20 minutes (older descriptors: 20–29)
99214	30 minutes (older descriptors: 30–39)
99215	40 minutes (older descriptors: 40–54)

Current CPT wording says the time must be met or exceeded, while older descriptors and many guides show ranges. Verify against the current CPT set. Time is total physician or QHP time on the date of the encounter, including record review, counseling, ordering, documenting, and care coordination. It excludes separately reported services, clinical staff time, and travel. Time is an alternative to MDM, not an extra requirement. Prolonged service rules differ: CPT uses 99417, Medicare uses G2212.

Factor	MDM Method	Time Method
Best used when	Complexity is clear, visit was short	Counseling or coordination dominated
Document	Problems, data, and risk	Total minutes and activities
Common error	Counting diagnoses	"25 minutes" with no detail

E/M Decision Matrix and Quick Reference

CPT	MDM	Time (by time)	Typical Complexity	Common Risk
99213	Low	20+ min	Stable chronic or acute uncomplicated	Undercoding when documented data or risk goes unused
99214	Moderate	30+ min	Worsening or multiple chronic, systemic symptoms	Defaulting to 99214; diagnosis-count coding
99215	High	40+ min	Severe exacerbation; threat to life or function	Unsupported use; thin risk documentation

Eight Illustrative Cases

These are educational scenarios, not universal coding determinations.

Case	MDM Reasoning	Possible Level	Lesson
Primary care: two stable chronic conditions, refills	2 stable chronic illnesses and prescription management	99214	Document each condition's status and decision
Cardiology: worsening heart failure, diuretic change, labs ordered	Progression; drug management; data	99214	Tie the plan to the progression
Dermatology: new lesion, uncertain diagnosis, biopsy decision	Undiagnosed new problem	99214 possible	Report the biopsy separately; E/M needs its own support
Behavioral health: stable depression, medication continued	Problems low, risk moderate: one element only	99213	Risk alone doesn't raise the level
Neurology: progressive symptoms, imaging reviewed, dose changed	Progression; data; drug management	99214	99215 needs documented severity
Gastroenterology: pathology and labs reviewed, treatment decision	Moderate data, moderate risk	99214	Name each reviewed result
Orthopedics: follow-up, imaging reviewed, plan adjusted	Depends on problem and decisions	99213 or 99214	Show what changed in the plan
Rheumatology: flare, biologic adjusted	Exacerbation; drug management	99214; 99215 only if severe	Don't assume high complexity

Documentation Audit Table

Element	What Reviewers Look For	Common Weakness and Fix
Assessment and plan	Problems addressed, with status	Diagnosis lists; state status and decision
Data	Named results, tests, outside notes	"Labs reviewed"; name them
Risk	Management decisions, such as prescriptions	Plan implied; state it
Time	Total minutes and activities	Minutes with no activities
Medical necessity	Level matches the visit's needs	Level exceeds the problem

Red flags: copy-forward notes, diagnosis-count coding, defaulting to one level, unsupported 99215 use, missing risk documentation, vague data statements, and assessments that conflict with plans. No single utilization percentage triggers an audit alone; review depends on payer policy and many factors.

Undercoding vs. Overcoding

Pattern	Financial Effect	Compliance Effect	Action
Undercoding	Lost revenue on every affected visit	Misstates services; may signal weak notes	Educate providers; review notes
Overcoding	Overpayment; recoupment risk	Audit and overpayment exposure	Correct claims; refund as required

Accurate, defensible coding is the goal, not higher coding. Revenue impact = affected encounters × average allowable difference. Hypothetical only: 500 encounters × $20 = $10,000. Real figures depend on payer, contract, and year.

E/M Audit Roadmap and Scorecard

Roadmap: 1) select a representative sample; 2) compare notes to codes; 3) evaluate MDM or time; 4) evaluate medical necessity; 5) identify patterns; 6) educate providers; 7) monitor new claims; 8) repeat periodically. Scorecard: rate each as met, partly met, or not met: documentation completeness, MDM support, time documentation, medical necessity, code accuracy, modifier accuracy, diagnosis linkage, claim acceptance, denial rate, downcoding rate, audit findings. This is an illustrative framework, not a benchmark.

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Specialty Considerations

The framework is the same in every specialty. Complexity and documentation habits differ. Primary care and endocrinology often manage several chronic conditions. Cardiology and rheumatology track progression and drug decisions. Neurology and gastroenterology weigh diagnostic review. Dermatology and orthopedics must separate E/M from procedures. Behavioral health leans on medication management, and pain management on prescribing and procedure decisions. No specialty has its own E/M rules.

E/M Coding Myths That Cost Practices Money

Myth	Reality
More diagnoses mean 99214	Level depends on MDM or time, not diagnosis count
Every 99215 is suspicious	Supported high MDM or time is defensible
You must document each minute separately	Document total time and the activities
Time and MDM must both support the level	Either one can
A complex patient means a complex code	The work of that visit sets the level
Coders decide if a condition is worsening	The clinician makes that determination

Human Review and Technology

Technology can prompt for missing documentation, suggest codes, check edits, and spot denial patterns. It doesn't replace physician judgment, certified coding expertise, or compliance review. Human checkpoints include documentation-to-code and MDM validation, time validation, medical necessity, diagnosis consistency, payer edits, denial and downcoding analysis, and provider education. At MedCloudMD, AI-powered billing is supported by experienced billing and coding professionals across our medical billing services and revenue cycle management.

CPT 99213, 99214, and 99215 FAQs

What is CPT 99213?

An established patient office visit with low MDM, or 20 minutes or more of total time when selected by time.

What is CPT 99214?

An established patient office visit with moderate MDM, or 30 minutes or more of total time.

What is CPT 99215?

An established patient office visit with high MDM, or 40 minutes or more of total time.

What is the difference between 99213 and 99214?

Low versus moderate MDM, or 20 versus 30 minutes. Two of three MDM elements must reach moderate.

What is the difference between 99214 and 99215?

Moderate versus high MDM, or 30 versus 40 minutes. High MDM usually involves a severe exacerbation or a threat to life or function.

Can time be used to select the level?

Yes. Use total physician or QHP time on the date of the encounter instead of MDM. You don't need both.

How does MDM determine an E/M code?

Rate problems, data, and risk. The level is the one at least two of the three elements meet or exceed.

How many MDM elements must support the level?

Two of the three.

What documentation supports 99214?

Moderate support in two elements, such as a worsening chronic illness plus prescription management, or 30+ documented minutes.

What documentation supports 99215?

High support in two elements, such as a severe exacerbation and a hospitalization decision, or 40+ documented minutes.

What are common E/M coding mistakes?

Counting diagnoses, defaulting to one level, thin risk or data statements, and time without detail.

How can a practice audit its E/M coding?

Sample claims, compare notes with codes by MDM or time, find patterns, educate providers, and repeat periodically.

Sources & References

AMA CPT E/M revisions FAQs; Medicare Claims Processing Manual, Chapter 12; Noridian Medicare E/M review results.

Last reviewed: October 2026. CPT and payer policies change. Verify current requirements.

Disclaimer: This article is educational. Medicare and commercial payer requirements may differ, and individual claims require review of the actual documentation and applicable payer policy. CPT codes and payer policies can change, so consult current official guidance. MedCloudMD does not guarantee reimbursement or claim approval.