CPT® Code 99222

Last Updated: 2026 | Aligned with AMA E/M framework, Medicare billing rules, and common payer edits

Key Takeaways

• CPT 99222 is used for an initial hospital care encounter (inpatient or observation) for a new or established patient when the visit meets moderate MDM or when total provider time is 55 minutes or more on the date of the encounter .
• 2023+ E/M changes: history and exam are no longer “scored” for level selection. The requirement is a “medically appropriate” history and/or exam; the level is driven by MDM or time .
• One initial per specialty per stay: after a group/specialty bills an initial hospital code (99221–99223) for that admission, subsequent visits by that group/specialty should use 99231–99233 .
• Medicare consult rule: Medicare does not pay inpatient consult codes; specialists typically use 99221–99223 for their first inpatient encounter. The admitting physician appends -AI to identify the principal physician of record .
• Audit readiness: documentation must support moderate complexity via the problems/data/risk framework (two of three at the moderate level) or clearly state total time ≥55 minutes when time is used for leveling . CPT 99222 sits in the middle of the initial hospital care code family (99221–99223). In practice, it is the workhorse “moderate” admission level for common inpatient and observation admissions: cases requiring meaningful diagnostic evaluation, coordination, and prescription-level management, but not the highest risk/complexity profile that would justify 99223. Under the modern E/M framework, the goal is not to document for “bullet points,” but to document clearly enough that a reviewer can see why a moderate level of physician decision making (or time) was medically necessary for the patient’s condition .

This guide explains how to select 99222 using either MDM or time, how to document in an audit-ready way, how payer edits commonly affect initial hospital codes, and how to use modifiers (especially -AI, -25, -57, and -24) when procedures or surgical global periods intersect with an admission .

1. MDM & Time Criteria for 99222

Medical Decision Making (MDM): what “moderate” means

To bill 99222 using MDM, the encounter must meet moderate complexity MDM. Under the AMA E/M framework, overall MDM level is determined by achieving the required level in two of three elements: (1) problems addressed, (2) data reviewed/analyzed, and (3) risk of complications and/or morbidity/mortality of patient management . For moderate MDM, two of these three categories must be at the moderate level; if only one category is moderate while the others are low, the overall MDM does not support 99222.

Moderate MDM commonly appears in admissions where the provider is simultaneously managing multiple active problems (for example, an acute illness plus clinically relevant comorbidities), reviewing or ordering multiple diagnostic tests, and making prescription-level treatment decisions. It can also occur when there is an undifferentiated presentation requiring a broad differential and inpatient monitoring to prevent deterioration. The key is that your note must make those components visible to a reviewer: what problems were addressed, what data were reviewed (and why it mattered), and what management decisions introduced moderate risk.

Practical MDM anchor: In inpatient settings, “moderate risk” frequently arises from prescription drug management (starting, stopping, or adjusting prescriptions) and from the decision to hospitalize for monitoring/therapy when outpatient management would be insufficient .

Time-based selection: the 55-minute threshold

Alternatively, 99222 can be billed based on time when the provider’s total time on the date of the encounter is 55 minutes or more . This includes face-to-face time and non-face-to-face time the provider personally spends on the date of service that is related to E/M work (reviewing records, evaluating results, documenting, counseling, coordinating care). The time must reflect work that is not separately reported (for example, time for a billable procedure should not be double-counted). Time-based selection is especially relevant when the patient’s MDM is borderline moderate but the admission is time-intensive because of record complexity, communication with multiple services, or extensive counseling.

When using time, document the total time clearly (for example, “Total time today: 62 minutes”). A brief breakdown is helpful for audit defense even when not strictly required. Consistency matters: if your note indicates complex coordination, extensive chart review, and counseling, a 55+ minute time statement is more credible than if the note is sparse and templated.

2. Documentation Standards and Best Practices

History and exam: “medically appropriate,” not point-based

Although code selection no longer depends on counting history/exam elements, the admission note should still contain a clinically meaningful history and physical appropriate to the patient’s presentation. The 2023+ framework explicitly states that only a “medically appropriate” history and/or exam is required for hospital E/M services . For most admissions, that means a usable H&P: chief concern, HPI with severity/context, relevant past history, medication/allergy review, pertinent ROS, and a focused but complete exam driven by the presenting problem. In audits, extremely minimal notes often fail not because of missing “bullets,” but because they do not support the claimed complexity, risk, or time.

Make the MDM explicit in the assessment/plan

The most audit-sensitive part of 99222 is the assessment/plan. A moderate admission note typically shows:

• Problems addressed: more than a single uncomplicated problem; often an acute illness with systemic impact, an exacerbation, or multiple active conditions with management decisions.
• Data: ordering/reviewing labs and imaging, reviewing prior records, and/or discussing test results or case details with other clinicians when clinically relevant.
• Risk: prescription drug management, IV therapy, escalation of care, or the decision for admission/observation when the patient’s risk profile warrants inpatient monitoring. Instead of generic phrases (“continue management”), specify what you did: which meds were started/adjusted, which tests were reviewed and how they affected the plan, what differential you considered and why admission was necessary. Medicare medical review emphasizes that the medically necessary portion of the service drives level—documentation should show why the patient needed moderate-level physician management, not merely that an H&P template was completed .

Audit-proof pattern example

Clinical picture: Community-acquired pneumonia with COPD exacerbation plus diabetes requiring inpatient medication coordination.

What to document: (1) Acute problem severity (oxygen requirement, fever, tachypnea), (2) data reviewed (CXR infiltrate, WBC trend, cultures ordered, prior COPD history), (3) risk/management (IV antibiotics, systemic steroids with glucose plan, bronchodilator regimen, monitoring plan and criteria for escalation). This makes moderate risk and moderate data review visible and supports 99222 by MDM .

Common documentation pitfalls that trigger downcoding

• Diagnosis lists without management detail: listing “pneumonia, COPD, DM” without documenting treatment decisions and monitoring often looks like low MDM.
• Copy-forward bloat with minimal thinking: long templated ROS/exam but little decision making can appear inconsistent with moderate complexity.
• Time-based coding without a time statement: if time is your basis, the total time must be recorded; otherwise an auditor cannot validate the 55-minute threshold .
• Not linking work to necessity: the note should explain why inpatient-level care was required, not merely that it occurred .

3. Medicare and Commercial Payer Policies

Medicare: initial hospital codes replace inpatient consult codes

Medicare does not recognize inpatient consult codes (99251–99255). For Medicare beneficiaries, a specialist’s first inpatient encounter is typically billed using an initial hospital care code (99221–99223) at the appropriate level . Medicare policy also distinguishes the admitting/attending physician from other physicians: the principal physician of record appends -AI to their initial hospital code to identify that role . This is especially important in multi-physician admissions where more than one specialty provides an initial service.

Commercial payers: consult coverage varies; “one initial per stay” edits are common

Commercial insurers vary: some still pay consult codes for non-Medicare plans, while others mirror Medicare. Regardless, the “one initial per specialty per admission” logic is widely enforced through claim edits and denials for duplicate initial visits . Operationally, this means that once your specialty group has billed an initial code for the admission, your later daily management should be billed with 99231–99233. If you mistakenly bill 99222 again on a later date in the same stay, it frequently denies as invalid/duplicate.

Same-day E/M merging: ED + admission on the same date (same physician)

A frequent billing issue is when the same provider evaluates a patient in the ED and then admits them on the same calendar date. In that case, the ED E/M and the admission E/M are not billed separately; the work is generally captured by the initial hospital code for that date. Coding guidance has emphasized that the ED evaluation is included in the admission service when performed by the admitting physician on the same date, although that work can be considered in determining the level of the admission service .

4. Modifier Use with 99222

Most 99222 claims do not require a modifier. Modifiers matter when you must explain special context to prevent bundling or denials.

• -AI (Principal physician of record): Medicare requires the admitting/attending physician to append -AI to their initial hospital care code to identify the principal physician. Other specialties do not use -AI .
• -25 (Significant, separately identifiable E/M same day as minor procedure): Use when a minor procedure (0- or 10-day global) occurs on the admission date and the E/M is distinct from the procedure’s usual work. Guidance on correct -25 use emphasizes that the E/M must stand on its own and be medically necessary beyond routine pre-procedure evaluation .
• -57 (Decision for surgery): Use when the admission E/M includes the decision for a major (90-day global) surgery performed the same day or the next day. Correct use separates the decision-making E/M from the surgical global package .
• -24 (Unrelated E/M during post-op period): Use when the same physician/specialty who is in a postoperative global period sees the patient for an unrelated problem requiring hospital admission. Medicare global surgery modifier guidance explains the purpose and constraints of postoperative modifiers such as -24 . Modifier choice should align with the procedure’s global period and the relationship of the E/M to the procedure. A common compliance error is using -25 where -57 is required, or omitting -57 so the payer bundles/denies the admission E/M as preoperative work.

5. Global Period Considerations

E/M codes do not have a global period, but surgical global periods can bundle certain E/M services depending on timing and relationship to surgery. For admissions related to a major surgery decision, use -57 as appropriate to avoid global bundling . For admissions during a postoperative global period, determine whether the reason for admission is related to the surgery. If it is related (complication or routine follow-up), the surgeon’s E/M is often considered part of global care. If unrelated, -24 may be necessary for the surgeon/same specialty group to obtain separate reimbursement .

These rules are provider-specific: other clinicians (hospitalists, intensivists, consultants) are not usually subject to bundling under another surgeon’s global package. However, payers can still misclassify relationships based on diagnosis coding. Accurate ICD-10 selection and a clear assessment/plan help prevent confusion and denials.

6. Comparing 99222 to 99221 and 99223

The AMA descriptor framework defines the three initial hospital levels using MDM or time thresholds. The simplest way to avoid systematic upcoding or undercoding is to evaluate each admission against these thresholds rather than defaulting to one level for most patients .

Remember the “same-day admit/discharge” rule: if the patient is admitted and discharged on the same date, CPT uses 99234–99236 rather than 99221–99223. Using 99222 when the patient does not span two dates is a common, correctable error and often leads to denials or rebilling requirements .

7. Real-World Scenarios and Pro Tips

Scenario A: ED evaluation followed by admission (same physician, same date)

Issue: Provider evaluates in ED and then admits later that day.

Approach: Bill only the initial hospital code for that date (99221–99223). The ED work is generally captured in the admission service; you may consider the ED evaluation when selecting the admission level .

Tip: Ensure the admission note clearly reflects the complexity and key decisions from earlier evaluation, rather than assuming the ED record will “carry” the claim.

Scenario B: Multiple specialties see the patient on day 1

Issue: Hospitalist admits; two specialists evaluate separate problems on the same day.

Approach: Medicare allows each specialty to bill an initial hospital visit for their first encounter in the stay, as long as it is medically necessary. The admitting physician uses -AI .

Tip: Each specialist note should demonstrate independent MDM specific to their problem (not duplicating the admitting H&P).

Scenario C: Minor procedure performed on admission day

Issue: Admission and minor procedure on same date; payer bundles E/M into procedure.

Approach: Use 99222-25 when the admission evaluation is significant and separately identifiable from the procedure’s typical work. Follow correct -25 principles: the E/M must stand on its own medically and in documentation .

Scenario D: Decision for major surgery made at admission

Issue: Surgeon evaluates, decides for major surgery that day/next day; payer denies admission E/M as global.

Approach: Bill 99222-57 to indicate the decision for a major procedure, separating the decision-making from the global surgical package .

Tip: Document the decision logic (diagnosis, risks/benefits discussion, alternatives, consent pathway) to support the modifier’s intent.

Scenario E: Admission during postoperative global period (same surgeon/specialty)

Issue: Patient admitted for a problem unrelated to recent surgery; payer denies as global follow-up.

Approach: Use 99222-24 when the E/M is unrelated to the postoperative care of the prior procedure, consistent with Medicare global surgery modifier guidance .

Tip: Make the “unrelated” diagnosis explicit and distinct from the surgical aftercare diagnosis set.

Pro tip for compliance and revenue integrity: Avoid “one-level defaults.” Payers and auditors use analytics to identify outliers (for example, physicians who bill 99222 for almost every admission). The most defensible profile is one where code selection clearly tracks patient complexity and documentation supports the chosen method (MDM or time). When using time, record it consistently. When using MDM, document the problems addressed, the meaningful data review, and the risk-bearing management decisions.