CPT® Code 99254

Last Updated: February 2026 | Verified against current CMS MLN guidance and AMA E/M Guidelines

Quick Reference

• What 99254 means: An initial hospital (inpatient or observation) consultation for a new or established patient that meets moderate Medical Decision Making (MDM) or is selected by time. Under AMA E/M guidance, the typical total time is ~60 minutes on the date of the encounter.
• Medicare payment reality: Medicare fee-for-service generally does not recognize inpatient consultation codes for Part B payment and instructs physicians/QHPs to bill an appropriate non-consult E/M code for the setting and complexity instead.
• Consultation documentation is specific: A CPT-defined consultation requires (1) a request for advice/opinion from an appropriate source, (2) the consultant's evaluation, and (3) a written report back to the requestor.
• One initial consult per admission per consultant: The initial inpatient consultation is generally reported once per consultant per facility admission; subsequent work is typically reported with subsequent hospital care E/M codes when applicable.
• Moderate MDM anchors: Moderate MDM is established by the standard E/M framework (problems addressed, data reviewed/analyzed, and risk of complications/management).
• Payer variability matters: Many commercial payers also restrict or deny consultation codes and require alternative E/M reporting (policy-driven). Verify contract-specific rules.

CPT 99254 is a hospital-based consultation code that sits in a narrow compliance lane: it is straightforward under CPT's definition of consultation services, yet it is frequently denied or miscoded because payers (especially Medicare fee-for-service) may not reimburse consultation codes and because true consultations require specific request-and-report documentation.

The highest denial and audit risk typically comes from four preventable failures:

1. Missing evidence of an explicit request for consultation
2. Missing a documented report back to the requestor
3. Confusing consultation with transfer-of-care/co-management
4. Billing consult codes to payers that require a non-consult E/M alternative

This guide provides a payer-realistic approach to using 99254 correctly when consultation codes are allowed, and to selecting the correct alternative E/M codes when they are not, using CMS and AMA primary guidance as the backbone.

1. Definition and Scope of CPT 99254

CPT 99254 describes an initial hospital (inpatient or observation) consultation performed by a physician or other qualified health care professional (QHP). It is used when another physician/QHP (or other appropriate source, depending on payer rules) requests the consultant's opinion or advice regarding the evaluation and/or management of a specific problem. Under the AMA E/M descriptors and guidelines, the service is defined by the consultation framework and is typically associated with moderate MDM or may be selected by total time on the date of the encounter (typical time approximately 60 minutes).

Setting: 99254 is limited to the hospital inpatient or hospital observation environment (i.e., a facility setting). It is not used for outpatient office consults (which are a different code family) and it is not used for subsequent daily hospital rounding after the initial consultation. CMS consultation guidance distinguishes initial consultation services from subsequent management services (where follow-up work is typically reported using subsequent hospital care codes when applicable).

What 99254 is not:

• Not a transfer of care: If the request is to assume management of the patient (rather than provide advice), that is typically treated as transfer of care and should be billed as an appropriate new/established or hospital care service, not a consultation code, under CMS consultation policy concepts.
• Not a "routine courtesy visit": Consultations should not be reported as a routine practice pattern without a request and consult intent. CMS claims-processing guidance describes consultation intent and documentation requirements.
• Not automatically payable: Even if the clinical work resembles a consult, payment depends on payer recognition of consultation codes and compliance with documentation requirements. CMS MLN guidance describes Medicare's non-recognition of these consultation codes and instructs alternative E/M reporting.

Practical compliance boundary: The word "consult" in the note is not enough. Auditors and payers look for (1) an explicit request from an appropriate source, (2) a consultant's opinion/advice, and (3) a report back to the requestor. In shared EHR environments, the consult note can serve as the report if it is clearly communicated and available to the requestor, consistent with CMS consultation documentation guidance.

2. How to Select 99254: MDM and Time

Under AMA E/M guidance, hospital consultation codes may be selected based on either (A) the level of Medical Decision Making (MDM) or (B) total time spent on the date of encounter, when time-based selection is appropriate. The AMA E/M guidelines describe the general method for determining MDM and what qualifies as countable time.

2.1 MDM selection: what "moderate complexity" means in practice

Moderate MDM is established using the standard E/M framework: (1) number and complexity of problems addressed, (2) amount/complexity of data to be reviewed and analyzed, and (3) risk of complications and/or morbidity/mortality of patient management.

In hospital consultations, common moderate-MDM patterns include:

• Multiple stable chronic conditions that must be evaluated together to guide inpatient management (e.g., CHF + CKD + diabetes affecting fluid, medication, and diagnostic decisions).
• Chronic illness with exacerbation requiring medication changes or escalation (e.g., COPD exacerbation complicated by pneumonia).
• Acute illness with systemic symptoms requiring prescription drug management or significant diagnostic evaluation.
• Undiagnosed new problem with uncertain prognosis requiring expanded differential and data review.

Moderate MDM is often supported by one or more of the following risk anchors:

• Prescription drug management (initiation, adjustment, discontinuation, or complex reconciliation of high-risk or interacting medications).
• Decision regarding escalation of care (e.g., step-down vs ICU monitoring recommendation, when clinically supported).
• Decision to order high-impact diagnostic testing (when integrated into management decisions and documented as such).

The key operational point is that moderate MDM is not defined by diagnosis labels alone; it is defined by the work and risk reflected in the note and the clinical reasoning linking problems, data, and management decisions (as described in the AMA E/M framework).

2.2 Time selection: the 60-minute total time concept

99254 is often associated with approximately 60 minutes total time on the date of encounter. Under AMA E/M guidance, "total time" includes both face-to-face and non-face-to-face physician/QHP time spent on the same date for activities such as reviewing records, interpreting results (when not separately reported), documenting, communicating with other professionals, and coordinating care, as allowed by the E/M time rules.

Time-based selection is particularly common when:

• The consult is data-intensive (review of outside records, prior imaging, complex medication history).
• The consultant communicates extensively with the primary team and/or family, and documents that work.
• The encounter includes coordination of tests, specialist input, or disposition planning that is integral to the consult opinion.

Time documentation rule of thumb: If you bill by time, document the total time and enough detail to show what the time represented (e.g., record review, exam, counseling, coordination, documentation). AMA E/M guidance describes time as a legitimate selection method when appropriately documented.

3. Consultation Requirements: Request, Opinion, Report

Consultation codes exist to represent a distinct clinical relationship: a requesting professional asks for advice or an opinion, and the consultant evaluates the patient and provides recommendations back. CMS consultation documentation guidance outlines the required elements for consultation reporting (request + reason, consultant documentation of the reason for consult, and a written report back to the requestor).

3.1 The request: what must be documented

The request for consultation may be written or verbal. CMS guidance describes that in shared medical record settings, the request can be documented in an order, the requesting provider's plan of care, or other record entry, and that the consultant should also document the request and reason in the consultant's note.

Best-practice documentation in the consultant note typically includes:

• Requesting clinician and role: "Requested by hospitalist Dr. X" or "Requested by surgery team for perioperative cardiac risk evaluation."
• Reason for consultation: A problem-focused question (e.g., "evaluate anemia and recommend work-up," "assist with anticoagulation strategy," "recommend antibiotic regimen and duration").
• Consult intent: Language that reflects advice/opinion, not transfer of full care, unless the transfer is explicitly intended (in which case consult codes may not be appropriate under CMS policy concepts).

3.2 The report: what qualifies and where it can live

CMS consultation policy describes that after the consultation is provided, the consultant must prepare a written report of findings and recommendations and furnish it to the requesting professional. In shared EHR environments (ED/hospital where records are shared), CMS guidance explains that the report can be an appropriate entry in the common medical record as long as it is available to the requestor.

In practice, a compliant "report" is typically the consult note itself when it includes:

• Assessment with differential or diagnosis considerations
• Clear recommendations (tests, medication changes, monitoring, follow-up)
• Communication evidence (e.g., "discussed with Dr. X," "recommendations relayed to primary team," or EHR co-sign/notification workflows)

3.3 One initial consult per admission per consultant

CMS guidance and claims-processing consultation instructions describe that an initial inpatient consultation is generally reported only once per consultant per patient per facility admission. Continued involvement for the same condition is typically reported using subsequent hospital care E/M codes when applicable. This is a frequent audit issue when groups inadvertently bill multiple initial consults because several specialists within the same specialty rotate coverage or because separate notes are written without distinguishing whether the service is a new consultation request versus ongoing management.

4. Medicare Policy: Why 99254 Commonly Denies and What to Bill Instead

A central payer reality is that Medicare fee-for-service generally does not recognize CPT consultation codes for payment under Part B and instructs physicians and qualified non-physician practitioners to report an appropriate alternative E/M code that reflects the setting and complexity of the service.

4.1 Medicare "consult replacement" logic (facility-based)

When Medicare does not allow consultation codes, the consultant must typically choose from:

• Initial hospital care codes (when the consultant is performing an initial hospital service that meets those code requirements), or
• Subsequent hospital care codes (often used when the work resembles a consult but does not align with initial hospital care descriptors or requirements, consistent with CMS MLN consultation Q&A guidance), or
• Other setting-appropriate E/M codes depending on where the service is rendered and how the service is structured.

The practical compliance point is that the billing code must match (a) Medicare's coverage/reimbursement rules and (b) the clinical reality of the service, including whether the consultant is the attending of record or a concurrent caregiver.

4.2 Medicare Advantage and non-Medicare plans

Medicare Advantage plans and commercial payers may or may not mirror Medicare fee-for-service consultation policies. Many do mirror Medicare and publish explicit policies, but plan variation exists. Always apply contract/policy rules for the specific payer and line of business, and document the consult elements when using a consult code in any payer environment.

Operational risk: Billing 99254 to Medicare fee-for-service is a high-probability denial event. If your workflow still uses consult templates, separate the clinical consult documentation (request, opinion, report) from the billing code selection rules required by the payer.

5. Audit-Proof Documentation Standards

For 99254 (when payable), documentation must support both consultation validity and level selection (moderate MDM or time).

5.1 Minimum documentation elements (consult validity)

• Request source and reason: Identify who requested the consult and the clinical question.
• Consultant evaluation: History/exam appropriate to the problem, integrated into decision-making and recommendations.
• Opinion and recommendations: Clear assessment and actionable recommendations (tests, treatment options, risk stratification, monitoring).
• Report back to requestor: Evidence that the findings/recommendations were furnished to the requestor (note as shared record entry or explicit communication statement).

5.2 Documentation elements supporting moderate MDM

A payer or auditor assessing moderate MDM will typically look for:

• Problems addressed: Show multiple conditions or an exacerbated/complicated condition evaluated in the consult, not merely listed on the problem list.
• Data reviewed/analyzed: Identify the specific records, labs, imaging, or external documents reviewed and how they influenced recommendations.
• Risk and management: Document medication changes, prescription management, decisions about escalation of care, or other moderate-risk decision points.

5.3 Time-based documentation (if selecting by time)

• Total time statement: Document the total time spent on the date of the consult.
• What the time included: Briefly describe the major components (record review, exam, counseling, coordination, documentation), consistent with AMA time guidance.
• Avoid double counting: Do not count time spent on separately reportable services when not allowed; keep time statements aligned with E/M guidance principles.

Common audit failure pattern: "Consult for X" is documented, but the chart lacks a clear request source and/or lacks clear evidence of a report back to the requestor. CMS consultation documentation guidance anticipates this issue and specifies acceptable documentation pathways, including shared record documentation.

6. Modifier and Reporting Rules (25, AI, and Same-Day Encounters)

Modifiers for 99254 are not unique to consultation codes, but several modifier issues recur in hospital workflows. Medicare policy additionally introduces attending-of-record concepts (e.g., principal physician) that affect E/M reporting in inpatient settings when non-consult codes are used.

6.1 Modifier 25 (significant, separately identifiable E/M)

Modifier 25 may apply when a separately identifiable E/M service is performed on the same date as another procedure/service and the documentation supports that the E/M was distinct. In hospital environments, this can arise when:

• A patient is evaluated in the ED and later receives an inpatient/observation evaluation that is separately identifiable.
• A consultant performs a distinct E/M beyond routine work included in another separately reported service.

6.2 Modifier AI (Medicare principal physician of record) and consult workflow

Medicare uses modifier AI in certain contexts to identify the principal physician of record for initial hospital care services. This becomes relevant when Medicare does not recognize consultation codes and the consultant instead reports a hospital care E/M code. In that situation, the attending physician's claim may require AI, while consultants generally do not append AI unless they are functioning as the principal physician of record.

6.3 Same-day admit/discharge, observation, and cross-setting complexity

Hospital E/M coding can be complicated by observation status, same-day transitions, and shared coverage. The safest compliance approach is to:

• Identify the patient status (inpatient vs observation) and the service type (initial vs subsequent vs discharge).
• Apply payer-specific rules regarding consultation recognition (especially Medicare).
• Ensure documentation matches the billed code family (consult vs hospital care) and that consult elements exist if a consult code is used.

7. Comparison Table: 99254 vs Related Inpatient/Outpatient E/M Codes

The comparison below focuses on how 99254 differs from common alternatives in real billing workflows, especially when consultation codes are not payable by the payer.

8. Real-World Clinical Scenarios and ICD-10 Examples

Scenario 1: Classic inpatient consult with moderate MDM (payer allows consult codes)

Clinical picture: 72-year-old admitted for acute decompensated heart failure with CKD and diabetes; hospitalist requests cardiology consult for diuretic strategy and medication optimization.

Consult work: Cardiologist reviews prior echo, current labs (BMP, BNP), medication history, evaluates volume status, adjusts diuretics and cardiac meds, recommends monitoring plan and follow-up testing.

Why 99254 fits (if consult codes are payable): Request is explicit, consult note provides assessment and recommendations, and recommendations are furnished to the requestor. MDM is moderate due to multiple chronic illnesses with exacerbation and prescription drug management.

ICD-10 examples: I50.9 (heart failure, unspecified) + N18.9 (CKD, unspecified) + E11.9 (type 2 diabetes without complications), as appropriate to the clinical documentation.

Scenario 2: Infectious disease consult with data-intensive review and time-based selection

Clinical picture: 65-year-old with bacteremia; primary team requests ID consult for antimicrobial regimen and duration.

Consult work: Consultant reviews cultures, susceptibilities, imaging, outside records, evaluates source control status, recommends antibiotic plan, monitoring labs, and follow-up.

Time pathway: Consultant documents total time on date of encounter meeting the typical 99254 threshold and describes the time components (record review, evaluation, coordination, documentation) consistent with AMA time rules.

Consult validity: Documentation includes request and a report back (shared EHR note or explicit communication statement), consistent with CMS consultation documentation concepts.

ICD-10 examples: R78.81 (bacteremia) or organism-specific codes and source-related diagnoses, as documented.

Scenario 3: "Consult requested," but transfer-of-care actually occurred (do not bill consult code)

Clinical picture: Hospitalist documents "consult nephrology," but the intent is for nephrology to assume ongoing management of renal failure and dialysis decisions as primary managing service.

Why consult coding is risky: Under CMS consultation policy concepts, transfer of care is not a consultation. In transfer-of-care situations, the receiving clinician typically reports the appropriate E/M service for the setting rather than a consultation code, based on payer rules.

Clean approach: Document the service accurately (consult opinion vs assumption of care) and bill the correct non-consult inpatient E/M code required by the payer.

Scenario 4: Medicare fee-for-service patient -- consult work performed, but consult code not payable

Clinical picture: A neurologist is asked to evaluate acute encephalopathy in an inpatient setting for a Medicare fee-for-service patient.

Billing reality: Even if the service is clinically a consultation, CMS MLN guidance describes that Medicare does not recognize consultation codes for payment and directs physicians/QHPs to report an alternative E/M code that reflects where the service occurred and its complexity.

Documentation still matters: Keep consultation-style documentation (request, opinion, report) because it is good clinical practice and may be required for other payers, but select the payer-required E/M code family for Medicare billing.

Scenario 5: Commercial payer denies consult codes by policy

Clinical picture: A specialist group bills 99254 to a commercial payer for a hospital consult.

Payer behavior: Some commercial payers publish reimbursement policies stating that consultation codes are not reimbursed and that providers must report alternative E/M codes.

Operational control: Build payer rules into charge capture (edit rules by payer) so the documentation can remain clinically correct while the billed code matches payer requirements.