Outpatient E/M Code Selection (First Question)
Select outpatient E/M codes based on medical decision making (MDM) or time. MDM has three elements:
- Number and complexity of problems addressed
- Amount and complexity of data to be reviewed and analyzed
- Risk of complications or morbidity
The code level is chosen using two out of three of these elements (the highest two).
Key Differences: Outpatient vs. Inpatient E/M
| Setting | Definition | Typical Codes | |---|---|---| | Outpatient | Same-day visits, no admission | 99202–99215 (based on MDM or time) | | Inpatient | Patient admitted and stays overnight | Admission: 99221–99223; Subsequent: 99231–99233 |
- Outpatient E/M is for single-day encounters.
- Inpatient E/M covers admission, daily progress notes, and discharge services.
Are History and Exam Required for Code Selection?
No. Since 2021, history and exam are medically appropriate but not determining factors for code level. Selection depends solely on MDM or total time.
When to Use Time-Based E/M Coding
- Use time-based coding when total provider time is clearly documented.
- Time includes face-to-face and non-face-to-face activities performed on the same date.
- All time must be clearly documented in the medical record.
Who Is a New Patient?
A patient who has not received any professional services from the same provider (or another provider in the same specialty/subspecialty) within the past 3 years.
Inpatient Admission Code Range
For inpatient admissions, use CPT codes:
- 99221 – lowest MDM
- 99222 – moderate MDM
- 99223 – high MDM
Coding Daily Inpatient Visits (Subsequent Hospital Care)
- Use code range 99231–99233.
- Selection is based on the level of MDM for that visit.
- “Daily inpatient visit” = subsequent hospital care.
Hospital Discharge Services
Discharge services are time-based:
- 99238 – 30 minutes or less
- 99239 – more than 30 minutes
Document the total discharge time.
Common Scenario Example
Patient comes for hypertension and diabetes follow-up. Labs reviewed, medications adjusted. Risk is moderate. What is the E/M code?
- Patient is established.
- Two or more chronic conditions = moderate MDM.
- Risk = moderate.
- Correct code: 99214
What to Do If Documentation Is Unclear
Raise a provider query to clarify and ensure accurate coding. Never guess or assume.
Practical Interview Tips
- Explain your logic clearly – not just the code numbers.
- Practice answering out loud as if in an interview. For more general interview preparation, review Top 10 E&M Coding Interview Questions for Freshers.
- Be ready to discuss denial scenarios and practical coding challenges.
For a comprehensive review of system-specific coding principles, refer to the Comprehensive Review of Pulmonary and Critical Care Medicine. You may also benefit from understanding related diagnostic procedures, such as ECG interpretation, by studying the Comprehensive Guide to Patient Identification and Normal ECG Interpretation and the Comprehensive Guide to ECG Waveforms, Intervals, and Heart Rate Calculation. To ensure accuracy in clinical data gathering, see the Step-by-Step Guide to Recording a Standard ECG Accurately.
So today's topic is about medical coding interview questions and answers both for certified and non-certified pressures
and is exclusively for ENM OP and IP specialtity. First question tell me how do you select an outpatient ENM code? So
the appropriate answer is outpatient ENM codes are selected based on the medical decision making that is MDM or time. MDM
has three elements. One number and complexity of problems. Two amount and complexity of data to be reviewed and
analyzed. And third risk of complication or morbidity. The level is selected based
on two out of these three elements. This is the correct answer for this question. Second, what is the difference between
outpatient and inpatient ENM? Outpatient ENM is for same day visits without admissions whereas inpatient ENM applies
when the patient is admitted and stays overnight and it includes admission daily progress notes and discharge
services. Third or history and exam mandatory for selection? The answer is no. From 2021 onwards, history and exam
are medically appropriate but not determining factors. So the code selection is based only on MDM or total
time. When do you use time based ENM coding? So the answer is when total provider time is clearly documented
we can select the ENM level based on time instead of AMDM and the time should includes both facetoface and
non-faceto-face activities performed on the same date and it should be clearly documented in the medical record. Next,
who is considered a new patient? The answer is a new patient is a patient who has not received any professional
services from the same provider who belongs to the same specialtity and subsp specialtity
within the past 3 years. Next question, what CPD range is used for inpatient admission? So for inpatient admission we
are using 9922 to 1 to 992 to3 ranges right. So you have to tell like for admission we have to use the code ranges
from 99221 to 99223 based on the MDM or time. Next question. How do you code daily inatient visits?
So the answer is subsequent visits are build using the code ranges from 99231 to 99233
and were selected based on the level of MDM. This is the appropriate answer. So the daily inpatient visit is a clue term
for subsequent hospital care. How will you code hospital discharge visits? Discharge services are time based. We
have two codes for discharge services that is 99238 and 99239.
99238 is for 30 minutes or less and 99239 is for more than 30 minutes of discharge time. The interviewer is
asking like I'll give you a scenario. A patient
comes for hypertension and diabetes followup labs reviewed medications adjusted and
the risk is moderate risk. What is the ENM code? So you have to answer like in this scenario patient came for followup.
So the patient is an established patient and the risk is moderate and we have two or more chronic conditions. So the MDM
is moderate MDM. So the correct code is 99214. What will you do if documentation is
unclear? I will raise a provider query for clarification to ensure accurate coding. This is the short answer. Okay.
So these are the real interview questions. If you're going for an interview, if you can explain this
clearly, you're not just a fresher on paper. So don't just watch this video and move on. Pause it and practice your
answers loudly and explain it like you are sitting in front of an interviewer. Interviews are not about how many codes
you remember. They are about how confidently you explain your logic.
If you want more real interview questions, denail scenarios and practical coding discussions and comment
below which question you found difficult. I'll explain that one in detail in the next video. Until then,
prepare smart, not hard. your interviews closer.
You select outpatient E/M codes based on either Medical Decision Making (MDM) or total time. For MDM, evaluate three key elements: the number and complexity of problems addressed, the amount and complexity of data reviewed, and the risk of complications or morbidity. You then choose the code level using two out of these three elements (the highest two). From 2021 onward, history and exam are no longer determining factors—they only need to be medically appropriate.
Outpatient E/M codes (99202–99215) are used for same-day visits where the patient is not admitted overnight, while inpatient E/M codes cover admission (99221–99223), daily progress notes (99231–99233 as subsequent care), and discharge services. Outpatient coding is for single-day encounters, whereas inpatient coding spans the entire hospital stay including the admission, daily visits, and time-based discharge services (99238 for 30 minutes or less, 99239 for more than 30 minutes).
No. Since the 2021 E/M coding changes, history and exam are considered medically appropriate but are no longer determining factors for code selection. Code levels depend solely on MDM or total time documented. However, providers should still document history and exam as clinically relevant, but they do not affect the code level itself.
Use time-based coding when the total provider time (face-to-face and non-face-to-face activities on the same date) is clearly documented. This method is appropriate for visits where time is the primary factor, such as extensive counseling or coordination of care. Ensure all time spent is recorded in the medical record to support the chosen code level.
A new patient is defined as someone who has not received any professional services from the same provider (or another provider in the same specialty or subspecialty) within the past three years. This definition applies to both outpatient and inpatient settings, and it’s crucial to verify the patient’s history to determine correct code assignment.
For an established patient with two or more chronic conditions (e.g., hypertension and diabetes) and moderate risk from medication adjustments or lab reviews, you should use code 99214. This corresponds to a moderate level of MDM because the number of problems and risk are both moderate. Remember to apply the two-out-of-three rule for MDM elements.
If documentation is unclear, you must raise a provider query to clarify specific details such as the complexity of problems, data reviewed, or risk. Never guess or assume the missing information. Accurate coding relies on clear documentation, and queries ensure both compliance and correct reimbursement in line with payer requirements.
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